CN108023850A - A kind of wireless communications method and device - Google Patents
A kind of wireless communications method and device Download PDFInfo
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- CN108023850A CN108023850A CN201711207763.3A CN201711207763A CN108023850A CN 108023850 A CN108023850 A CN 108023850A CN 201711207763 A CN201711207763 A CN 201711207763A CN 108023850 A CN108023850 A CN 108023850A
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- H—ELECTRICITY
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2626—Arrangements specific to the transmitter only
- H04L27/2646—Arrangements specific to the transmitter only using feedback from receiver for adjusting OFDM transmission parameters, e.g. transmission timing or guard interval length
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
- H04L27/2657—Carrier synchronisation
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Abstract
The present invention is suitable for field of communication technology, there is provided a kind of wireless communications method and device, including：By being modulated in transmitting terminal to data bit flow to be modulated, obtain the first complex signal corresponding with the data bit flow, pseudo-random sequence is produced further according to the data bit flow, and the pseudo-random sequence is modulated to obtain the second complex signal corresponding with the pseudo-random sequence；First complex signal and second complex signal are combined into a physical frame, finally physical frame is handled to obtain analog signal and is concurrently incident upon receiving terminal.The structure of physical frame is simplified, reduces data redundancy of the data flow in modulated process.The second complex signal is determined by the method for Rapid timing acquisition in receiving terminal, digital feedback loop carrier auxiliary is carried out to the first complex signal again, the data bit flow after being demodulated is decoded finally by channel error correction, reception processing delay expense is reduced, effectively increases the sensitivity behaviour of system data throughput and data receiver.
Description
Technical field
The invention belongs to field of communication technology, more particularly to a kind of wireless communications method and device.
Background technology
Internet of Things proposes the transmission performance of data higher requirement, in order to ensure network coverage requirement equipment room
Possess longer transmission range and relatively low receiving sensitivity, terminal node generally use battery powered, it is desirable to which equipment possesses
Relatively low operation power consumption.Equipment may face more complicated network application and interference environment, thus it requires system possess it is more flexible
Networking and stronger antijamming capability.
Mainstream wireless internet of things data transmission technology mainly has Wireless Fidelity Wifi, bluetooth, mobile communication in the prior art
Net etc..Wherein, Wifi has data transfer by transmission technologys such as spread-spectrum DSSS, orthogonal frequency division multiplexi OFDM
Higher service rate and demodulation performance, but the defects of easily data occur power consumption is higher in transmitting procedure.Bluetooth passes through biography
The permanent envelope frequency shift keying fsk transmission technology of system, carries out network extension using technologies such as wireless mesh network Mesh, has low work(
The advantages that consumption, low cost, networking flexibility, main deficiency is traditional frequency shift keying fsk demodulation threshold poor performance, the same terms
Lower receiving sensitivity Shortcomings.
The content of the invention
In view of this, an embodiment of the present invention provides a kind of wireless communications method and device, to solve to exist in the prior art
Data receiver sensitivity behaviour is bad during being wirelessly transferred, and there is the problem of delay.
The first aspect of the embodiment of the present invention provides a kind of wireless communications method, including：
Data bit flow to be modulated is modulated, obtains the first complex signal corresponding with the data bit flow；
Pseudo-random sequence is produced according to the data bit flow, and the pseudo-random sequence is modulated, is obtained and institute
State corresponding second complex signal of pseudo-random sequence；
First complex signal and second complex signal are combined into a physical frame；
The physical frame is handled, and the analog signal obtained after processing is launched to receiving terminal.
The second aspect of the embodiment of the present invention provides a kind of wireless communications method, including：
Analog signal to be demodulated is obtained, physical frame corresponding with the analog signal is obtained according to the analog signal；
The complex signal in the physical frame is obtained, and acquisition data bit flow is corresponding from the complex signal of the physical frame
First complex signal and corresponding second complex signal of pseudo-random sequence；
Carrier auxiliary is carried out to first complex signal according to second complex signal, first after carrier auxiliary is obtained and answers
Signal；
The first complex signal after the carrier auxiliary is demodulated, the data bit flow after being demodulated.
The third aspect of the embodiment of the present invention provides a kind of radio communication device, including：
First complex signal acquiring unit, for being modulated to data bit flow to be modulated, obtains and the data ratio
Spy flows corresponding first complex signal；
Second complex signal acquiring unit, for producing pseudo-random sequence according to the data bit flow, and to it is described it is pseudo- with
Machine sequence is modulated, and obtains the second complex signal corresponding with the pseudo-random sequence；
Framing unit, for first complex signal and second complex signal to be combined into a physical frame；
Transmitter unit, for handling the physical frame, and the analog signal obtained after processing is launched to reception
End.
The fourth aspect of the embodiment of the present invention provides a kind of radio communication device, including：
Physical frame acquiring unit, for obtaining analog signal to be demodulated, obtains and the mould according to the analog signal
Intend the corresponding physical frame of signal；
Complex signal detection unit, for obtaining the complex signal in the physical frame, and from the complex signal of the physical frame
Obtain corresponding first complex signal of data bit flow and corresponding second complex signal of pseudo-random sequence；
Carrier recovery unit, for carrying out carrier auxiliary to first complex signal according to second complex signal, obtains
The first complex signal after carrier auxiliary；
Demodulating unit, for being demodulated to the first complex signal after the carrier auxiliary, the data ratio after being demodulated
Spy's stream.
5th aspect of the embodiment of the present invention provides a kind of radio communication device, including：It is processor, input equipment, defeated
Going out equipment and memory, the processor, input equipment, output equipment and memory are connected with each other, wherein, the memory is used
Device is supported to perform the computer program of the above method in storage, the computer program includes programmed instruction, the processor
It is arranged to call described program instruction, the method for performing above-mentioned first aspect.
6th aspect of the embodiment of the present invention provides a kind of computer-readable recording medium, the computer-readable storage medium
Computer program is stored with, the computer program includes programmed instruction, and described program instruction makes institute when being executed by a processor
State the method that processor performs above-mentioned first aspect.
7th aspect of the embodiment of the present invention provides a kind of radio communication device, including：It is processor, input equipment, defeated
Going out equipment and memory, the processor, input equipment, output equipment and memory are connected with each other, wherein, the memory is used
Device is supported to perform the computer program of the above method in storage, the computer program includes programmed instruction, the processor
It is arranged to call described program instruction, the method for performing above-mentioned second aspect.
The eighth aspect of the embodiment of the present invention provides a kind of computer-readable recording medium, the computer-readable storage medium
Computer program is stored with, the computer program includes programmed instruction, and described program instruction makes institute when being executed by a processor
State the method that processor performs above-mentioned second aspect.
Existing beneficial effect is the embodiment of the present invention compared with prior art：Using Rapid timing acquisition, digital feedback
Loop carrier recovery demodulation, folding coding effectively increase the sensitivity behaviour of data receiver, reduce whole synchronous and demodulation
Delay in processing procedure, and its caused time overhead, ensure that system valid data handling capacity.
Brief description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, drawings in the following description be only the present invention some
Embodiment, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is a kind of flow chart of wireless communications method provided in an embodiment of the present invention；
Fig. 2 is a kind of flow chart for wireless communications method that another embodiment of the present invention provides；
Fig. 3 is a kind of flow chart for wireless communications method that yet another embodiment of the invention provides；
Fig. 4 is a kind of schematic diagram of radio communication device provided in an embodiment of the present invention；
Fig. 5 is a kind of schematic diagram for radio communication device that another embodiment of the present invention provides；
Fig. 6 is a kind of schematic diagram for radio communication device that yet another embodiment of the invention provides；
Fig. 7 is a kind of schematic diagram of radio communication device provided in an embodiment of the present invention；
Fig. 8 is a kind of schematic diagram of radio communication device provided in an embodiment of the present invention.
Embodiment
In being described below, in order to illustrate rather than in order to limit, it is proposed that such as tool of particular system structure, technology etc
Body details, to understand thoroughly the embodiment of the present invention.However, it will be clear to one skilled in the art that these are specific
The present invention can also be realized in the other embodiments of details.In other situations, omit to well-known system, device, electricity
Road and the detailed description of method, in case unnecessary details hinders description of the invention.
In order to illustrate technical solutions according to the invention, illustrated below by specific embodiment.
Referring to Fig. 1, Fig. 1 is a kind of flow chart of wireless communications method provided in an embodiment of the present invention.In the present embodiment
Executive agent is the device with wireless communication function, which can be the devices such as dispensing device, wireless sensor node, but
It is not limited to this.As shown in Figure 1, wireless communications method provided in an embodiment of the present invention comprises the steps of：
S101：Data bit flow to be modulated is modulated, obtains the first letter in reply corresponding with the data bit flow
Number.
Wireless internet of things are not usually high to Physical Layer Service Data transmission rate request in data transmission procedure, but to it
Its transmission performance proposes higher requirement.In order to ensure network coverage requirement equipment room possess longer transmission range with
And relatively low receiving sensitivity, terminal node generally use battery powered, it is desirable to which equipment possesses relatively low operation power consumption.Equipment can
More complicated network application and interference environment can be faced, thus it requires system possesses more flexible networking and stronger anti-interference
Ability, and possess rational system application cost.
After the perception node layer in Internet of things system is collecting data, it is necessary to by the network equipment by these data
It is transmitted in server or host computer and is handled accordingly.And before transmitting, it is necessary to first be modulated data, to letter
The information in number source carries out processing and is added on carrier wave, so that it becomes being suitable for the process of the form of transmission.I.e. needing to modulate
Signal spectrum move on desirable position so that the modulated signal that modulated signal is converted into being suitable for propagating, and
Its transmission availability to system and the reliability of transmission have very big influence.
Data bit flow to be modulated is obtained, data bit flow to be modulated is modulated.Wherein, modulation system can be with
For binary phase shift keying (Binary Phase Shift Keying, BPSK), quadrature phase shift keying (Quadrature
Phase Shift Keyin, QPSK), quadrature amplitude modulation (Quadrature Amplitude Modulation, QAM) etc. adjusts
Mode processed.Specific modulation system is according to the configuring condition of the parameter setting of system, the characteristic of data bit flow or sending and receiving end
Selected, do not limited herein.
By being modulated to data bit flow, complex signal corresponding with data bit flow is drawn, be the first complex signal.Show
Example property, a complex signal Zt=Sr+jSi can be regarded as the synthesis of a real signal Sr and an empty signal Si, i.e., same to phase
Signal and orthogonal signal respectively are cos the and sin components of signal.Since any one is containing only the signal that having time t is independent variable
A two-dimensional curve is can be seen as, then two being superimposed for signal Sr and Si respectively using the time as unique independent variable can be regarded as
It is a three-dimensional curve extended with the time.
S102：Pseudo-random sequence is produced according to the data bit flow, and the pseudo-random sequence is modulated, is obtained
The second complex signal corresponding with the pseudo-random sequence.
Pseudo-random sequence is produced according to data bit flow, pseudo-random sequence be it is a kind of seemingly random, it is actually regular
Periodic binary sequence, there is the property of similar noise sequence.Exemplary, in CDMA (Code Division
Multiple Access, CDMA) in, address code is all chosen from pseudo-random sequence, and a kind of most easy reality is used in CDMA
Existing pseudo-random sequence：M-sequence, different user is distinguished using m-sequence out of phase；For data safety, in seeking for CDMA
Exhale and data mask technology has been used in channel and forward traffic channel, its method is the m-sequence for subtracting 1 with 42 powers that length is 2
For carrying out scrambler to Traffic Channel, it is carried out on the modulation character of Block Interleaver output, passes through interleaver output character
It is added and completes with the binary system die worker of long code PN chips.
In the present embodiment, pseudo-random sequence can use standard m-sequences, and the length of 2n- 1, wherein, n is more than 3 just
Integer, the size of n can match somebody with somebody according to system configuration.
And pseudo-random sequence is modulated, draw complex signal corresponding with pseudo-random sequence, i.e. the second complex signal.Its
In, modulation system can be constellation mapping.For example, be modulated by modulation systems such as BPSK, specific modulation system according to
The configuring condition of the parameter setting of system, the characteristic of data bit flow or sending and receiving end is selected, and is not limited herein.
S103：First complex signal and second complex signal are combined into a physical frame.
Complex signal corresponding with data bit flow will be obtained in step S101, and obtained in step S102 with puppet with
The corresponding complex signal of machine sequence, carries out framing and synthesizes a physical frame.One physical frame generally includes loaded portion and leading character
Number two parts, wherein, loaded portion is the corresponding complex signal of data bit flow, i.e. the first complex signal；Leading symbol is pseudorandom
The corresponding complex signal of sequence, i.e. the second complex signal.
Further, according to system configuration, a packet header can be inserted between leading symbol and load in some operating modes
Part, for carrying the control information of some physical layers.At this time, the concrete structure of physical frame is then followed successively by：Leading symbol, packet header
And load.By simplifying physical layer data frame structure, reduce the data redundancy of physical frame, so reduce physical frame transmission,
Time delay during demodulation etc..
S104：The physical frame is handled, and the analog signal obtained after processing is launched to receiving terminal.
Digital signal corresponding with physical frame is drawn according to physical frame.Optionally, by physical frame is launched into
Type and up-sampling treatment, draw digital signal corresponding with physical frame.
Digital-to-analogue conversion is carried out to the digital signal again, obtains analog signal corresponding with digital signal.Complete digital signal
To after the conversion of analog signal, up-conversion, radio frequency orthogonal modulation, power amplification are carried out to analog signal, finally by antenna
Launch to receiving terminal.
Such scheme, by being modulated to data bit flow to be modulated, obtains corresponding with data bit flow first
Complex signal, produces pseudo-random sequence further according to data bit flow, and pseudo-random sequence is modulated, and obtains and pseudo-random sequence
Corresponding second complex signal, is then combined into a physical frame by the first complex signal and the second complex signal, simplifies physical frame
Structure, finally is handled to obtain analog signal and is concurrently incident upon receiving terminal to physical frame, reduces data flow in modulated process
Data redundancy, and its caused time overhead ensure that system valid data handling capacity.
Referring to Fig. 2, Fig. 2 is a kind of flow chart of wireless communications method provided in an embodiment of the present invention.In the present embodiment
Executive agent is the device with wireless communication function, which can be the devices such as dispensing device, wireless sensor node, but
It is not limited to this.As shown in Fig. 2, wireless communications method provided in an embodiment of the present invention comprises the steps of：
S201：Constellation mapping is carried out to the data bit flow to be modulated, obtains the load of physical frame.
Optionally, before being modulated to data bit flow, forward error correction (Forward Error are passed through
Correction, FEC) error correction is carried out to data bit flow.When data are produced in transmitting procedure in redundancy, or transmission
There is mistake, receiver will be allowed to build data again, to strengthen error correction of the data communication system after noise and environmental disturbances is subject to
Ability, lifts the quality of reception of data receiver, improves channel capacity.
FEC can use convolutional code or block code, since convolutional code not only has more excellent error correcting capability, and also it is relatively general
Logical linear block codes has the advantages that decoding latency is smaller and implementation complexity is moderate, therefore generally use convolutional code.
Exemplary, with (wherein K is constraint length) exemplified by convolutional code (2,1, K), specific coding process is described：From upper strata
First input bit of business data packet starts, and serially by bits of encoded, each input bit corresponds to 2 coded-bit outputs；
In order to ensure the reliability of last several data bit decodings, K-1 tail bit 0 usually is filled in input data bit tail,
After receiving terminal decodes, corresponding tail bit need to be deleted.
Optionally, realize that change data structure is without change data content to greatest extent by interleaver.Wherein, interweave
Device can be regular interleaver, random interleaver, irregular interleaver etc., and interleaving mode can use simply fixed row, column to put
The mode changed, details are not described herein.It should be noted that interleaving process is the optional step in the present embodiment, only when to receiving
Handle delay-insensitive and used when having higher requirements to interference free performance.
Constellation mapping is carried out to data bit flow, draws complex signal corresponding with data bit flow, is the first complex signal,
First complex signal is the loaded portion of physical frame.Wherein, constellation mapping can use the various modulation methods such as BPSK, QPSK, QAM
Formula, it is preferred that using single carrier PSK digital modulation techniques, to provide relatively reliable sensitivity during data demodulation, to improve whole
The demodulation performance of data communication system.
Optionally, when having particular/special requirement to application environment and network performance, auxiliary is inserted into the loaded portion of physical frame
Pilot tone.
Loaded portion in physical frame is used for carrying upper strata effective traffic data message, and upper layer data is compiled by FEC convolution
Code, the generation for interweaving, loaded portion being completed after constellation mapping.Can by using convolutional encoding, single carrier PSK digital modulation techniques
It is effectively improved whole system receiver demodulation performance and sensitivity.
S202：Pseudo-random sequence is produced according to the data bit flow, and constellation mapping is carried out to the pseudo-random sequence,
Obtain the leading symbol of physical frame.
Pseudo-random sequence is produced according to data bit flow, constellation mapping is carried out to pseudo-random sequence, constellation mapping can use
BPSK。
Leading symbol uses the preferable pseudo-random sequence of autocorrelation performance as synchronizing signal, for determining mobile station and connecing
When data are sent and received between access point, and transmission informs other mobile stations in order to avoid conflicting, while transmit synchronizing signal when carrying out
And frame period.To ensure that quick timing and frequency acquisition of the receiver under low signal-to-noise ratio environment are synchronous, data transfer is improved
Receiving sensitivity and antijamming capability.
S203：The load of the physical frame and the leading symbol are subjected to framing and obtain a physical frame.
In order to make reception correctly to receive and check transmitted frame, sender must be according to certain rule thing
The data stream framing that reason layer is submitted.Framing mainly solves the problems such as frame boundaries, frame synchronization, transparent transmission.Usually have following
Four kinds of methods realize framing：Character count method, the first delimiter method of Character Filling, the side such as head and the tail notation of bit padding
Method.
Because being transmitted in a network by least unit of frame, receiving terminal will correctly receive frame, it is necessary to
Will be clear that the frame is since terminating which to which in a string of bit streams, and it is a string of bit streams that otherwise receiving terminal is received, is not had
Stem and afterbody cannot correctly distinguish frame.
Framing should add stem, i.e. leading symbol, again tailing portion, i.e. loaded portion.Physical layer is original without structure
Bit stream is divided into the structured data unit of certain length, and bit combination framing is transmitted for unit, simplifies physical-layer data frame
Structure, makes the frame that error is only retransmitted in error, without retransmitting total data, so as to improve efficiency.
S204：The load of the physical frame and the leading symbol are subjected to framing and obtain a physical frame.
S2041：The physical frame is subjected to transmitting shaping and up-sampling treatment, draws numeral corresponding with the physical frame
Signal.
Transmitting forming processes are carried out to physical frame, launch swirler blade angle device more than molding filtration generally use root liter, raised cosine rolling
Drop signal is used for eliminating intersymbol interference, is base band inline filter and receiving terminal by transmitting terminal by the way of when actually realizing
Two public realizations of link of matched filter.The product of both transmission functions of Transmission system, so each link is flat
Square-root raised-cosine roll-off filter.Wave filter can so be reduced realizes difficulty.Its impulse response function RCo (t) is as follows：
Wherein, roll-off factor α be able to can flexibly match somebody with somebody according to system application requirement, and Ts is symbol durations.
In digital communication, the signal that actual transmission goes out is that various discrete sample sequence passes through the shaping arteries and veins after forming filter
Rush sequence.Matched filter is in order to enable maximum in sampling time signal-to-noise ratio.When originator forming filter is filtered with root raised cosine
Ripple device, when receiving terminal equally uses root raised cosine filter matched filtering, can either cause sampling time signal-to-noise ratio highest, that is, complete
The effect of matched filter, and intersymbol interference can not be introduced in certain band limit flat channel.
Optionally, by up-sample complete transmitting molding filtration after signal sampling rate to digital-to-analogue conversion sample rate conversion,
To ensure the consistent of sample rate.
S2042：By carrying out digital-to-analogue conversion to the digital signal, simulation letter corresponding with the digital signal is obtained
Number, and the analog signal is sent to receiving terminal.
Digital-to-analogue conversion is carried out to the digital signal, obtains analog signal corresponding with digital signal.Digital signal is completed to arrive
After the conversion of analog signal, up-conversion, radio frequency orthogonal modulation, power amplification are carried out to analog signal, is sent out finally by antenna
It is incident upon receiving terminal.
Such scheme, by being adjusted respectively to the pseudo-random sequence of data bit flow and data bit flow to be modulated
Make, corresponding first complex signal and the second complex signal, the effect of modulation is improved by PSK digital modulations and convolutional encoding
Rate.The first complex signal and the second complex signal are subjected to framing again, obtain a physical frame, and then simplify the structure of physical frame.
Finally physical frame is handled to obtain analog signal and be concurrently incident upon receiving terminal, effectively reduce data flow in modulated process
Time delay, and its caused time overhead, ensure that system valid data handling capacity.
Referring to Fig. 3, Fig. 3 is a kind of flow chart of wireless communications method provided in an embodiment of the present invention.In the present embodiment
Executive agent is the device with wireless communication function, which can be the devices such as reception device, wireless sensor node, but
It is not limited to this.As shown in figure 3, wireless communications method provided in an embodiment of the present invention comprises the steps of：
S301：Analog signal to be demodulated is obtained, thing corresponding with the analog signal is obtained according to the analog signal
Manage frame.
Analog-to-digital conversion is carried out to the analog signal got, digital signal corresponding with the analog signal is obtained, to numeral
Signal carries out the processing such as down-sampled, reception molding filtration, obtains physical frame corresponding with analog signal.
Down-sampled processing is carried out to the digital signal got, completes input digital signal analog-to-digital conversion sample rate to numeral
The conversion of baseband sampling rate.Down-sampled is the process for the sample rate for reducing signal specific, commonly used in reducing message transmission rate
Or size of data.The down-sampled factor will be generally above 1 integer or rational.This factor expression sampling period becomes former
Several times come are big, or equivalently represent that sample rate becomes original part.Sample rate is reduced due to down-sampled,
Need to ensure that nyquist sampling theorem is still set up under new relatively low sample rate.By the digital signal to getting into
The down-sampled processing of row, completes the sampling to Low Medium Frequency or base-band analog signal, exports digital sampled signal, reduces data sample,
And then operation time is reduced, improve the efficiency of data transfer.
S302：The complex signal in the physical frame is obtained, and data bit flow is obtained from the complex signal of the physical frame
Corresponding second complex signal of corresponding first complex signal and pseudo-random sequence.
The complex signal in the physical frame is obtained, the second complex signal according to known to prestoring, from the complex signal of physical frame
It is middle to detect corresponding first complex signal of pseudo-random sequence, and corresponding second complex signal of data bit flow and then multiple by this
Information after signal acquisition demodulation.
Exemplary, a complex signal Zt=Sr+jSi can be regarded as the conjunction of a real signal Sr and an empty signal Si
Into.Due to any one containing only having time t be independent variable signal can be seen as a two-dimensional curve, i.e., base station signal is same
Phase signals (in-phase) and orthogonal signalling (orthogonal), are cos the and sin components of signal.Two respectively using the time as
Being superimposed for the signal Sr and Si of unique independent variable can regard a three-dimensional curve extended with the time as.
Step S302 includes step S3021-S3023.
S3021：According to the second complex signal to prestore, the two-dimensional parallel that time domain and frequency domain are carried out to the complex signal is searched for,
Capture the second complex signal in the complex signal.
Second complex signal is prestored into the communicator, by carrying out time domain and frequency domain two-dimensional parallel to complex signal
Search for realize, search every time need to be contrasted the second complex signal to prestore being locally stored, and capture the in complex signal
Two complex signals.By synchronizing signal when/search of frequency two-dimensional parallel collected mail the quick same of number various synchronizing informations with completing docking
Step detection, ensures the real-time and fast Acquisition of the docking collection of letters number, there is provided accurate timing, carrier wave frequency deviation, carrier phase etc. are synchronous
Information.
S3022：The degree of correlation between the second complex signal and the second complex signal of the capture that prestore described in calculating.
In time-frequency two-dimensional search procedure, the information of the second complex signal and the second complex signal in complex signal that prestore is calculated
The degree of correlation, and correlated results is added up and exports the power square of accumulation result amplitude.Current search output power square value
Ratio with current input signal power is the phase of the second complex signal and the information of the second complex signal in complex signal that prestore
Guan Du.
S3022：If the degree of correlation is more than default relevance threshold, second complex signal is the physical frame
Leading symbol, remaining complex signal in the physical frame are the load of the physical frame.
In the present embodiment, relevance threshold is detection threshold, once current search output power square value with it is current defeated
The ratio for entering signal power is more than detection threshold, i.e. the degree of correlation is more than default relevance threshold, then synchronization acquistion detects successfully.
Then second complex signal is the leading symbol of physical frame, remaining complex signal in physical frame is the load of physical frame.
If the degree of correlation is less than or equal to default relevance threshold, skip second complex signal, carry out remaining second
The capture of complex signal.
Corresponding timing and frequency deviation information currently will successfully be detected as slightly synchronous testing result output.Time stepping precision
For Ts/ 4 can meet the requirements, and frequency domain stepping accuracy is related with leading symbol length, as preamble length be 63 when, frequency domain stepping accuracy
It can be met the requirements for Bw/128, whole frequency domain search scope depends on maximum possible transmitting-receiving carrier wave frequency deviation,
Optionally, using the above-mentioned Nonlinear Transformation in Frequency Offset Estimation result synchronously detected carrier wave frequency deviation benefit is carried out to receiving targeting signal
Repay, and remove the influence of leading symbol modulation sequence, the calculating of auto-correlation function is carried out to signal, is obtained using auto-correlation function
The joint essence estimation of residual carrier frequency deviation；Angle is sought after carrying out cumulative operation to complex signal after removal leading symbol modulation sequence i.e.
Current phase essence estimated result can be obtained.
Optionally, it is timed according to data receiver performance requirement smart synchronous.Utilized in a less timing range
The known pilot synchronizing signal docking being locally stored, which is collected mail, number does a timing search for higher stepping accuracy, testing principle with it is above-mentioned before
It is similar to lead symbol capture, to obtain the Timing Synchronization estimated result of higher precision.
Optionally, according to the demand of system performance, provided according to synchronous detection and receive and dispatch carrier frequency offset to obtain pair
The estimation of sampling clock error is received and dispatched, and then treats demodulating data and is timed precompensation processing；Assuming that transmitting-receiving carrier wave frequency deviation is
Δ f, radio frequency carrier frequency fc, then receive and dispatch sampling clock deviation and be estimated as：Δf/fc.Also can by classical delay phase-locked loop come
Complete to treat the sample timing error tracking of demodulating data and compensate.Timed Recovery is used to tracking and compensating loaded portion data solution
The drift of data sampling timing caused by clock jitter is transmitted/received during tune, to ensure the correct demodulation of data.
S303：Carrier auxiliary is carried out to first complex signal according to second complex signal, after obtaining carrier auxiliary
First complex signal.
The carrier wave frequency deviation and phase deviation of physical frame are calculated according to the second complex signal, and it is same according to phase deviation to obtain phase
Walk information.On the basis of carrier wave frequency deviation and phase synchronization information, tracked by digital phase-locked loop and remove residual carrier frequency deviation with
And in demodulating process carrier frequency and phase drift influence, ensure signal demodulation that is correct, stablizing.
The phase theta exported according to numerically-controlled oscillator (numerically controlled oscillator, NCO)
(t) phase compensation is carried out to loaded portion input signal Si (t), outputs of the compensation output So (t) as carrier auxiliary, makees at the same time
For the input signal of phase demodulation.According to the modulation system of constellation mapping, the phase difference θ (t) of current leading symbol part is carried out
Estimation.Processing is filtered to phase demodulation output Δ θ (t) and obtains rate-adaptive pacemaker fi (t), requires loop filtering can according to tracking performance
Using single order or multiple-rank arrangement.
The initial frequencies and phase of NCO are carrier wave frequency deviation fo and carrier phase θ0Estimated result, f is exported to loop filteringi
(τ) carries out frequency integrator operation, and output phase θ (t) gives phase compensation block, the wherein calculation of output phase θ (t) such as
Under：
Demodulated by digital feedback loop carrier auxiliary, carrying out phase compensation to input signal is compensated output, to mending
Repay output and carry out the phase difference that phase demodulation gets completion current sign data, carrying out loop filtering further according to the phase difference obtains frequency
Rate exports, and the output phase of the rate-adaptive pacemaker is calculated by numerically-controlled oscillator, effectively reduces reception processing delay expense,
It ensure that valid data throughput, be adapted to the various network environment applications such as bursty data transmitting-receiving and Mesh (grid)/star-like.
S304：Solution constellation mapping is carried out to the loaded portion after carrier auxiliary, is obtained corresponding with the physical frame
Data bit flow.
The first complex signal after carrier auxiliary is demodulated, draws data bit flow, which is effective
Service data information.By demodulating obtained data bit flow, then the information of transmitting terminal transmission can be obtained.
It should be noted that it is corresponding with the modulator approach in step S101 to the demodulation method of loaded portion, to ensure
The uniformity of modulation demodulation system, obtains correct demodulating information after the demodulation.
Optionally, the loaded portion data after carrier auxiliary are removed with the influence of constellation modulation, under FEC patterns, output is soft
Discriminative information；Under non-FEC patterns, bit hard decision result is directly exported.Corresponding deinterleave is carried out according to system configuration to operate,
And under FEC patterns, complete corresponding decoding processing, bit data information after output decoding.
Preferably, FEC uses convolutional encoding, accordingly, is entirely translated by Viterbi maximum likelihoods folding coding
Code processing.Real-time estimation to final data is completed by folding coding and is recovered, effectively reduce whole receiver it is synchronous and
Demodulation process postpones introduced time overhead, small to the dependence of upper strata networking mode.
Such scheme, by obtaining analog signal to be demodulated, thing corresponding with analog signal is obtained according to analog signal
Frame is managed, then obtains the complex signal in physical frame, the second complex signal is determined by the parallel search method of Rapid timing acquisition, according to
Second complex signal carries out digital feedback loop carrier auxiliary, the number after being demodulated finally by folding coding to the first complex signal
According to bit stream, the sensitivity behaviour of data receiver is effectively increased, whole receiver is reduced to greatest extent synchronously and demodulates
Processing postpones introduced time overhead, and transmitting-receiving overhead, effectively improves data throughout.
Referring to Fig. 4, Fig. 4 is a kind of schematic diagram of radio communication device provided in an embodiment of the present invention.Radio communication device
400 can be the device such as dispensing device, wireless sensor node, but be not limited to this, and can also be other with wireless communication
The device of function.The each unit that the radio communication device 400 of the present embodiment includes is used to perform each in the corresponding embodiments of Fig. 1
Step, referring specifically to the associated description in the corresponding embodiments of Fig. 1 and Fig. 1, does not repeat herein.The channel radio of the present embodiment
T unit 400 includes the first complex signal acquiring unit 401, the second complex signal acquiring unit 402, Framing unit 403, transmitter unit
404。
First complex signal acquiring unit 401 is used to be modulated data bit flow to be modulated, obtains and the data
Corresponding first complex signal of bit stream；
Second complex signal acquiring unit 402 is used to produce pseudo-random sequence according to the data bit flow, and to the puppet
Random sequence is modulated, and obtains the second complex signal corresponding with the pseudo-random sequence；
Framing unit 403 is used to first complex signal and second complex signal being combined into a physical frame；
Transmitter unit 404 is used to handle the physical frame, and the analog signal obtained after processing is launched to connecing
Receiving end.
First complex signal acquiring unit 401 is specifically used for carrying out constellation mapping to the data bit flow to be modulated, obtains
To the load of physical frame；
Second complex signal acquiring unit 402 is specifically used for producing pseudo-random sequence according to the data bit flow, and to institute
State pseudo-random sequence and carry out constellation mapping, obtain the leading symbol of physical frame；
Framing unit 403 is specifically used for the load of the physical frame and leading symbol progress framing obtaining a thing
Manage frame.
Such scheme, by being modulated to data bit flow to be modulated, obtains corresponding with data bit flow first
Complex signal, produces pseudo-random sequence further according to data bit flow, and pseudo-random sequence is modulated, and obtains and pseudo-random sequence
Corresponding second complex signal, is then combined into a physical frame by the first complex signal and the second complex signal, simplifies physical frame
Structure, finally is handled to obtain analog signal and is concurrently incident upon receiving terminal to physical frame, reduces data flow in modulated process
Time delay, and its caused time overhead ensure that system valid data handling capacity.
Referring to Fig. 5, Fig. 5 is a kind of schematic diagram of radio communication device provided in an embodiment of the present invention.Radio communication device
500 can be the device such as dispensing device, wireless sensor node, but be not limited to this, and can also be other with wireless communication
The device of function.The each unit that the radio communication device 500 of the present embodiment includes is used to perform each in the corresponding embodiments of Fig. 2
Step, referring specifically to the associated description in the corresponding embodiments of Fig. 2 and Fig. 2, does not repeat herein.The channel radio of the present embodiment
T unit 500 includes the first complex signal acquiring unit 501, the second complex signal acquiring unit 502, Framing unit 503, transmitter unit
504。
First complex signal acquiring unit 501 is used to carry out constellation mapping to the data bit flow to be modulated, obtains thing
Manage the load of frame.
Second complex signal acquiring unit 502 is used to produce pseudo-random sequence according to the data bit flow, and to the puppet
Random sequence carries out constellation mapping, obtains the leading symbol of physical frame.
Framing unit 503 is used to the load of the physical frame and leading symbol progress framing obtaining a physics
Frame.
Transmitter unit 504 is used to the load of the physical frame and leading symbol progress framing obtaining a physical frame
Wherein, transmitter unit 504 can also include：
Transmitting forming unit 5041 is used to the physical frame carrying out transmitting shaping and up-sampling treatment, draws and the thing
Manage the corresponding digital signal of frame.
D/A conversion unit 5042 is used to, by carrying out digital-to-analogue conversion to the digital signal, obtain and the digital signal
Corresponding analog signal, and the analog signal is sent to receiving terminal.
Such scheme, by being adjusted respectively to the pseudo-random sequence of data bit flow and data bit flow to be modulated
Make, corresponding first complex signal and the second complex signal, the effect of modulation is improved by PSK digital modulations and convolutional encoding
Rate.The first complex signal and the second complex signal are subjected to framing again, obtain a physical frame, and then simplify the structure of physical frame.
Finally physical frame is handled to obtain analog signal and be concurrently incident upon receiving terminal, effectively reduce data flow in modulated process
Time delay, and its caused time overhead, ensure that system valid data handling capacity.
Referring to Fig. 6, Fig. 6 is a kind of schematic diagram of radio communication device provided in an embodiment of the present invention.Radio communication device
600 can be the device such as receiver, wireless sensor node, but be not limited to this, and can also be other with wireless communication work(
The device of energy.The each unit that the radio communication device 600 of the present embodiment includes is used to perform each step in the corresponding embodiments of Fig. 3
Suddenly, referring specifically to the associated description in the corresponding embodiments of Fig. 3 and Fig. 3, do not repeat herein.The wireless communication of the present embodiment
Device 600 includes physical frame acquiring unit 601, complex signal detection unit 602, carrier recovery unit 603, demodulating unit 604.
Physical frame acquiring unit 601, for obtaining analog signal to be demodulated, according to the analog signal obtain with it is described
The corresponding physical frame of analog signal；
Complex signal detection unit 602, for obtaining the complex signal in the physical frame, and from the complex signal of the physical frame
It is middle to obtain corresponding first complex signal of data bit flow and corresponding second complex signal of pseudo-random sequence；
Carrier recovery unit 603, for carrying out carrier auxiliary to first complex signal according to second complex signal, obtains
The first complex signal after to carrier auxiliary；
Demodulating unit 604, for being demodulated to the first complex signal after the carrier auxiliary, the data after being demodulated
Bit stream.
Such scheme, by obtaining analog signal to be demodulated, thing corresponding with analog signal is obtained according to analog signal
Frame is managed, then obtains the complex signal in physical frame, the second complex signal is determined by the parallel search method of Rapid timing acquisition, according to
Second complex signal carries out digital feedback loop carrier auxiliary, the number after being demodulated finally by folding coding to the first complex signal
According to bit stream, the sensitivity behaviour of data receiver is effectively increased, whole receiver is reduced to greatest extent synchronously and demodulates
Processing postpones introduced time overhead, and transmitting-receiving overhead and valid data handling capacity.
Referring to Fig. 7, Fig. 7 is a kind of schematic diagram of radio communication device provided in an embodiment of the present invention.Sheet as shown in Figure 7
Radio communication device 700 in embodiment can include：One or more processors 701, one or more input equipment 702,
One or more then output equipment 703 and one or more memories 704.Above-mentioned processor 701, input equipment 702, then export
Equipment 703 and memory 704 complete mutual communication by communication bus 705.
Memory 704 is instructed for storage program.
The programmed instruction that processor 701 is used to be stored according to memory 704 performs following operation：
Memory 704 is used to be modulated data bit flow to be modulated, obtains corresponding with the data bit flow
First complex signal；
Memory 704 be additionally operable to according to the data bit flow produce pseudo-random sequence, and to the pseudo-random sequence into
Row modulation, obtains the second complex signal corresponding with the pseudo-random sequence；
Memory 704 is additionally operable to first complex signal and second complex signal being combined into a physical frame；
Memory 704 is additionally operable to handle the physical frame, and the analog signal obtained after processing is launched to connecing
Receiving end.
Memory 704 is specifically used for carrying out constellation mapping to the data bit flow to be modulated, obtains the negative of physical frame
Lotus；
Memory 704 is specifically used for producing pseudo-random sequence according to the data bit flow, and to the pseudo-random sequence
Constellation mapping is carried out, obtains the leading symbol of physical frame；
Memory 704 is specifically used for the load of the physical frame and leading symbol progress framing obtaining a physics
Frame.
Such scheme, by being modulated to data bit flow to be modulated, obtains corresponding with data bit flow first
Complex signal, produces pseudo-random sequence further according to data bit flow, and pseudo-random sequence is modulated, and obtains and pseudo-random sequence
Corresponding second complex signal, is then combined into a physical frame by the first complex signal and the second complex signal, simplifies physical frame
Structure, finally is handled to obtain analog signal and is concurrently incident upon receiving terminal to physical frame, reduces data flow in modulated process
Time delay, and its caused time overhead ensure that system valid data handling capacity.
It should be appreciated that in the present embodiment, alleged processor 701 can be central processing unit (Central
Processing Unit, CPU), which can also be other general processors, digital signal processor (Digital
Signal Processor, DSP), application-specific integrated circuit (Application Specific Integrated Circuit,
ASIC), ready-made programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic
Device, discrete gate or transistor logic, discrete hardware components etc..General processor can be microprocessor or this at
It can also be any conventional processor etc. to manage device.
Input equipment 702 can include Trackpad, fingerprint adopt sensor (finger print information that is used to gathering user and fingerprint
Directional information), microphone etc., output equipment 703 can include display (LCD etc.), loudspeaker etc..
The memory 704 can include read-only storage and random access memory, and to processor 701 provide instruction and
Data.The a part of of memory 704 can also include nonvolatile RAM.For example, memory 704 can also be deposited
Store up the information of device type.
In the specific implementation, processor 701, input equipment 702, the output equipment 703 described in the embodiment of the present invention can
Perform the realization side described in the first embodiment and second embodiment of the method for processing information provided in an embodiment of the present invention
Formula, also can perform the implementation of the described terminal of the embodiment of the present invention, details are not described herein.
A kind of computer-readable recording medium, the computer-readable storage medium are provided in another embodiment of the invention
Matter is stored with computer program, and the computer program is realized when being executed by processor：
Data bit flow to be modulated is modulated, obtains the first complex signal corresponding with the data bit flow；
Pseudo-random sequence is produced according to the data bit flow, and the pseudo-random sequence is modulated, is obtained and institute
State corresponding second complex signal of pseudo-random sequence；
First complex signal and second complex signal are combined into a physical frame；
The physical frame is handled, and the analog signal obtained after processing is launched to receiving terminal.
Further, also realized when the computer program is executed by processor：
Constellation mapping is carried out to the data bit flow to be modulated, obtains the load of physical frame；
Pseudo-random sequence is produced according to the data bit flow, and constellation mapping is carried out to the pseudo-random sequence, is obtained
The leading symbol of physical frame；
The load of the physical frame and the leading symbol are subjected to framing and obtain a physical frame.
The computer-readable recording medium can be the internal storage unit of the terminal described in foregoing any embodiment, example
Such as the hard disk or memory of terminal.The computer-readable recording medium can also be the External memory equipment of the terminal, such as
The plug-in type hard disk being equipped with the terminal, intelligent memory card (Smart Media Card, SMC), secure digital (Secure
Digital, SD) card, flash card (Flash Card) etc..Further, the computer-readable recording medium can also be wrapped both
Including the internal storage unit of the terminal also includes External memory equipment.The computer-readable recording medium is used to store described
Other programs and data needed for computer program and the terminal.The computer-readable recording medium can be also used for temporarily
When store the data that has exported or will export.
Referring to Fig. 8, Fig. 8 is a kind of schematic diagram for radio communication device that another embodiment of the present invention provides.As shown in Figure 8
The present embodiment in radio communication device 800 can include：One or more processors 801；One or more input equipments
802, one or more output equipments 803 and memory 840.Above-mentioned processor 801, input equipment 802,803 and of output equipment
Memory 840 is connected by bus 850.
Memory 840 is instructed for storage program.
The programmed instruction that processor 801 is used to be stored according to memory 840 performs following operation：
Processor 801 is used to obtain analog signal to be demodulated, is obtained and the analog signal according to the analog signal
Corresponding physical frame；
Processor 801 is additionally operable to obtain the complex signal in the physical frame, and is obtained from the complex signal of the physical frame
Corresponding first complex signal of data bit flow and corresponding second complex signal of pseudo-random sequence；
Processor 801 is additionally operable to carry out carrier auxiliary to first complex signal according to second complex signal, is carried
The first complex signal after ripple recovery；
Processor 801 is additionally operable to be demodulated the first complex signal after the carrier auxiliary, the data after being demodulated
Bit stream.
Processor 801 is specifically used for according to the second complex signal to prestore, and the two of time domain and frequency domain are carried out to the complex signal
Parallel search is tieed up, captures the second complex signal in the complex signal；
Processor 801 is specifically used between the second complex signal of the second complex signal and capture to prestore described in calculating
The degree of correlation；
If processor 801 is more than default relevance threshold specifically for the degree of correlation, second complex signal is
The leading symbol of the physical frame, remaining complex signal in the physical frame are the load of the physical frame.
Processor 801 is inclined specifically for the carrier wave frequency deviation and phase that the physical frame is calculated according to second complex signal
Difference, and phase synchronization information is obtained according to the phase deviation；
Processor 801 is specifically used for according to the carrier wave frequency deviation and the phase synchronization information, to first complex signal
Carrier auxiliary is carried out, obtains the first complex signal after carrier auxiliary.
Processor 801 is specifically used for carrying out solution constellation mapping to the first complex signal after carrier auxiliary, after obtaining demodulation
Data bit flow.
Such scheme, by obtaining analog signal to be demodulated, thing corresponding with analog signal is obtained according to analog signal
Frame is managed, then obtains the complex signal in physical frame, the second complex signal is determined by the parallel search method of Rapid timing acquisition, according to
Second complex signal carries out digital feedback loop carrier auxiliary, the number after being demodulated finally by folding coding to the first complex signal
According to bit stream, the sensitivity behaviour of data receiver is effectively increased, whole receiver is reduced to greatest extent synchronously and demodulates
Processing postpones introduced time overhead, and transmitting-receiving overhead and valid data handling capacity.
A kind of computer-readable recording medium, the computer-readable storage medium are provided in one more embodiment of the present invention
Matter is stored with computer program, and the computer program is realized when being executed by processor：
Analog signal to be demodulated is obtained, physical frame corresponding with the analog signal is obtained according to the analog signal；
The complex signal in the physical frame is obtained, and acquisition data bit flow is corresponding from the complex signal of the physical frame
First complex signal and corresponding second complex signal of pseudo-random sequence；
Carrier auxiliary is carried out to first complex signal according to second complex signal, first after carrier auxiliary is obtained and answers
Signal；
The first complex signal after the carrier auxiliary is demodulated, the data bit flow after being demodulated.
Further, also realized when the computer program is executed by processor：
According to the second complex signal to prestore, the two-dimensional parallel that time domain and frequency domain are carried out to the complex signal is searched for, and captures institute
State the second complex signal in complex signal；
The degree of correlation between the second complex signal and the second complex signal of the capture that prestore described in calculating；
If the degree of correlation is more than default relevance threshold, second complex signal is the leading character of the physical frame
Number, remaining complex signal in the physical frame is the load of the physical frame.
Further, also realized when the computer program is executed by processor：
The carrier wave frequency deviation and phase deviation of the physical frame are calculated according to second complex signal, and it is inclined according to the phase
Difference obtains phase synchronization information；
According to the carrier wave frequency deviation and the phase synchronization information, carrier auxiliary is carried out to first complex signal, is obtained
The first complex signal after carrier auxiliary.
Further, also realized when the computer program is executed by processor：
Solution constellation mapping is carried out to the first complex signal after carrier auxiliary, the data bit flow after being demodulated.
Those of ordinary skill in the art may realize that each exemplary list described with reference to the embodiments described herein
Member and algorithm steps, can be realized with electronic hardware, computer software or the combination of the two, in order to clearly demonstrate hardware
With the interchangeability of software, each exemplary composition and step are generally described according to function in the above description.This
A little functions are performed with hardware or software mode actually, application-specific and design constraint depending on technical solution.Specially
Industry technical staff can realize described function to each specific application using distinct methods, but this realization is not
It is considered as beyond the scope of this invention.
It is apparent to those skilled in the art that for convenience of description and succinctly, the end of foregoing description
End and the specific work process of unit, may be referred to the corresponding process in preceding method embodiment, details are not described herein.
In several embodiments provided herein, it should be understood that disclosed terminal and method, can pass through it
Its mode is realized.For example, device embodiment described above is only schematical, for example, the division of the unit, only
Only a kind of division of logic function, can there is other dividing mode when actually realizing, such as multiple units or component can be tied
Another system is closed or is desirably integrated into, or some features can be ignored, or do not perform.In addition, shown or discussed phase
Coupling, direct-coupling or communication connection between mutually can be INDIRECT COUPLING or the communication by some interfaces, device or unit
Connection or electricity, the connection of mechanical or other forms.
The unit illustrated as separating component may or may not be physically separate, be shown as unit
The component shown may or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
In network unit.Some or all of unit therein can be selected to realize the embodiment of the present invention according to the actual needs
Purpose.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, can also
It is that unit is individually physically present or two or more units integrate in a unit.It is above-mentioned integrated
Unit can both be realized in the form of hardware, can also be realized in the form of SFU software functional unit.
If the integrated unit is realized in the form of SFU software functional unit and is used as independent production marketing or use
When, it can be stored in a computer read/write memory medium.Based on such understanding, technical scheme is substantially
The part to contribute in other words to the prior art, or all or part of the technical solution can be in the form of software product
Embody, which is stored in a storage medium, including some instructions are used so that a computer
Equipment (can be personal computer, server, or network equipment etc.) performs the complete of each embodiment the method for the present invention
Portion or part steps.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can store journey
The medium of sequence instruction.
The above description is merely a specific embodiment, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, various equivalent modifications can be readily occurred in or replaced
Change, these modifications or substitutions should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with right
It is required that protection domain subject to.
Claims (12)
- A kind of 1. wireless communications method, it is characterised in that including：Data bit flow to be modulated is modulated, obtains the first complex signal corresponding with the data bit flow；Pseudo-random sequence is produced according to the data bit flow, and the pseudo-random sequence is modulated, is obtained and the puppet Corresponding second complex signal of random sequence；First complex signal and second complex signal are combined into a physical frame；The physical frame is handled, and the analog signal obtained after processing is launched to receiving terminal.
- 2. wireless communications method as claimed in claim 1, it is characterised in that described to be adjusted to data bit flow to be modulated System, obtains the first complex signal corresponding with the data message, including：Constellation mapping is carried out to the data bit flow to be modulated, obtains the load of physical frame；It is described that pseudo-random sequence is produced according to the data bit flow, and the pseudo-random sequence is modulated, obtained and institute Corresponding second complex signal of pseudo-random sequence is stated, including：Pseudo-random sequence is produced according to the data bit flow, and constellation mapping is carried out to the pseudo-random sequence, obtains physics The leading symbol of frame；It is described that first complex signal and second complex signal are combined into a physical frame, including：The load of the physical frame and the leading symbol are subjected to framing and obtain a physical frame.
- A kind of 3. wireless communications method, it is characterised in that including：Analog signal to be demodulated is obtained, physical frame corresponding with the analog signal is obtained according to the analog signal；The complex signal in the physical frame is obtained, and data bit flow corresponding first is obtained from the complex signal of the physical frame Complex signal and corresponding second complex signal of pseudo-random sequence；Carrier auxiliary is carried out to first complex signal according to second complex signal, obtains the first letter in reply after carrier auxiliary Number；The first complex signal after the carrier auxiliary is demodulated, the data bit flow after being demodulated.
- 4. wireless communications method as claimed in claim 3, it is characterised in that described to be obtained from the complex signal of the physical frame First complex signal and second complex signal, including：According to the second complex signal to prestore, the two-dimensional parallel that time domain and frequency domain are carried out to the complex signal is searched for, and capture is described multiple The second complex signal in signal；The degree of correlation between the second complex signal and the second complex signal of the capture that prestore described in calculating；If the degree of correlation is more than default relevance threshold, second complex signal is the leading symbol of the physical frame, Remaining complex signal in the physical frame is the load of the physical frame.
- 5. wireless communications method as claimed in claim 3, it is characterised in that it is described according to second complex signal to described One complex signal carries out carrier auxiliary, obtains the first complex signal after carrier auxiliary, including：The carrier wave frequency deviation and phase deviation of the physical frame are calculated according to second complex signal, and is obtained according to the phase deviation To phase synchronization information；According to the carrier wave frequency deviation and the phase synchronization information, carrier auxiliary is carried out to first complex signal, obtains carrier wave The first complex signal after recovery.
- 6. wireless communications method as claimed in claim 3, it is characterised in that first letter in reply to after the carrier auxiliary Number it is demodulated, the data bit flow after being demodulated, including：Solution constellation mapping is carried out to the first complex signal after carrier auxiliary, the data bit flow after being demodulated.
- A kind of 7. radio communication device, it is characterised in that including：First complex signal acquiring unit, for being modulated to data bit flow to be modulated, obtains and the data bit flow Corresponding first complex signal；Second complex signal acquiring unit, for producing pseudo-random sequence according to the data bit flow, and to the pseudorandom sequence Row are modulated, and obtain the second complex signal corresponding with the pseudo-random sequence；Framing unit, for first complex signal and second complex signal to be combined into a physical frame；Transmitter unit, for handling the physical frame, and the analog signal obtained after processing is launched to receiving terminal.
- A kind of 8. radio communication device, it is characterised in that including：Physical frame acquiring unit, for obtaining analog signal to be demodulated, obtains believing with the simulation according to the analog signal Number corresponding physical frame；Complex signal detection unit, for obtaining the complex signal in the physical frame, and obtains from the complex signal of the physical frame Corresponding first complex signal of data bit flow and corresponding second complex signal of pseudo-random sequence；Carrier recovery unit, for carrying out carrier auxiliary to first complex signal according to second complex signal, obtains carrier wave The first complex signal after recovery；Demodulating unit, for being demodulated to the first complex signal after the carrier auxiliary, the data bit flow after being demodulated.
- 9. a kind of radio communication device, including memory, processor and it is stored in the memory and can be in the processing The computer program run on device, it is characterised in that the processor realizes such as claim 1 when performing the computer program The step of to any one of 2 the method.
- 10. a kind of computer-readable recording medium, the computer-readable recording medium storage has computer program, its feature exists In when the computer program is executed by processor the step of realization such as any one of claim 1 to 2 the method.
- 11. a kind of radio communication device, including memory, processor and it is stored in the memory and can be in the processing The computer program run on device, it is characterised in that the processor realizes such as claim 3 when performing the computer program The step of to any one of 6 the method.
- 12. a kind of computer-readable recording medium, the computer-readable recording medium storage has computer program, its feature exists In when the computer program is executed by processor the step of realization such as any one of claim 3 to 6 the method.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN113645035A (en) * | 2021-07-21 | 2021-11-12 | 中国电子科技集团公司电子科学研究院 | Physical layer security transmission method, system, device and computer-readable storage medium |
| CN115215218A (en) * | 2022-06-13 | 2022-10-21 | 武桥工业装备有限责任公司 | Wireless control system and method for telescoping, swinging and hanging of railway crane counterweight |
| CN115865127A (en) * | 2022-11-30 | 2023-03-28 | 南京长峰航天电子科技有限公司 | Parameter estimation and demodulation method of direct sequence spread spectrum signal |
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| CN108760682A (en) * | 2018-05-24 | 2018-11-06 | 中国地质大学（北京） | Gas replacement parameter acquiring method, system and terminal device |
| CN113645035A (en) * | 2021-07-21 | 2021-11-12 | 中国电子科技集团公司电子科学研究院 | Physical layer security transmission method, system, device and computer-readable storage medium |
| CN115215218A (en) * | 2022-06-13 | 2022-10-21 | 武桥工业装备有限责任公司 | Wireless control system and method for telescoping, swinging and hanging of railway crane counterweight |
| CN115865127A (en) * | 2022-11-30 | 2023-03-28 | 南京长峰航天电子科技有限公司 | Parameter estimation and demodulation method of direct sequence spread spectrum signal |
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