CN106789785B - Wireless communication carriers frequency calibrating method and system without crystal oscillator - Google Patents
Wireless communication carriers frequency calibrating method and system without crystal oscillator Download PDFInfo
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- CN106789785B CN106789785B CN201611094385.8A CN201611094385A CN106789785B CN 106789785 B CN106789785 B CN 106789785B CN 201611094385 A CN201611094385 A CN 201611094385A CN 106789785 B CN106789785 B CN 106789785B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0024—Carrier regulation at the receiver end
- H04L2027/0026—Correction of carrier offset
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Abstract
The present invention relates to a kind of wireless communication carriers frequency calibrating method of no crystal oscillator and systems, wherein, the described method includes: the carrier frequency of no crystal oscillator is adjusted to the first reception frequency according to the tranmitting frequency of wireless signal, the tranmitting frequency of the wireless signal is given frequency；Frequency monitoring wireless signal is received described first, if monitoring, receiving set of frequency for described first is practical reception frequency；If not monitoring the wireless signal in the first reception frequency, the first reception frequency is gradually adjusted until monitoring the wireless signal according to preset step-length, and will monitor that the reception set of frequency of the wireless signal receives frequency to be practical；It calculates the given frequency and the practical difference received between frequency is determined as carrier wave frequency deviation；The carrier frequency of the no crystal oscillator is adjusted according to the carrier wave frequency deviation.The present invention can not only reduce the generation cost of carrier frequency, and be able to satisfy the demand of the high-precision and high-quality to carrier frequency.
Description
Technical field
The present invention relates to wireless communication technology fields, more particularly to the wireless communication carriers frequency calibrating method of no crystal oscillator
And system.
Background technique
In wireless communication, carrier frequency all works in higher frequency, and to the frequency accuracy of carrier frequency with mutually make an uproar
There is very high requirement than quality.In order to meet requirement of the carrier frequency for precision and quality, usually in wireless communication system
Middle use has source crystal oscillator or uses the high-precision no source crystal oscillator of high-quality, generates the high-precision carrier frequency of high-quality to reach
Purpose, but using has the cost of source crystal oscillator or the high-precision no source crystal oscillator of high-quality all very high.In the conventional technology, also there is use
Method of the complicated modulation-demo-demodulation method to reduce the requirement to the quality and precision of carrier frequency, or demodulated according to receiver
Signal out again compensated oscillator or PLL (Phase Locked Loop phaselocked loop) to achieve the purpose that correct carrier frequency,
Although communication quality can be improved, still to rely on crystal oscillator and high-precision reference is provided.
Summary of the invention
Based on this, it is necessary to aiming at the problem that how to provide the carrier frequency of low cost, high-precision high-quality, provide one kind
Wireless communication carriers frequency calibrating method and system without crystal oscillator, wherein the described method includes:
The carrier frequency of no crystal oscillator is adjusted to the first reception frequency, the wireless signal according to the tranmitting frequency of wireless signal
Tranmitting frequency be given frequency；
Frequency monitoring wireless signal is received described first, if monitoring the wireless communication in the first reception frequency
Number, then receiving set of frequency for described first is practical reception frequency；If not monitored in the first reception frequency described
Wireless signal then gradually adjusts the first reception frequency until monitoring the wireless signal according to preset step-length, and will
Monitor that the reception set of frequency of the wireless signal receives frequency to be practical；
The given frequency and the practical difference received between frequency are calculated, and the difference is determined as carrier frequency
Partially；
The carrier frequency of the no crystal oscillator is adjusted according to the carrier wave frequency deviation.
The carrier frequency of the no crystal oscillator in one of the embodiments, comprising:
Using first simulation oscillating circuit correction the second simulation oscillating circuit to generate reference clock, wherein described first
Simulation oscillating circuit meets preset frequency range, and the second simulation oscillating circuit meets preset phase and makes an uproar range；
Reference clock input phaselocked loop is generated into carrier frequency.
The carrier frequency of no crystal oscillator is adjusted to by the tranmitting frequency according to wireless signal in one of the embodiments,
One receives frequency, comprising:
Obtain the systematic error E of the carrier frequency of the no crystal oscillator；
It, will be without crystal oscillator according to the given frequency F of the systematic error E of the carrier frequency of the no crystal oscillator and the wireless signal
Carrier frequency be adjusted to the first reception frequency F1, and F1 ∈ (F-E, F+E).
It is described in one of the embodiments, gradually to adjust the first reception frequency until monitoring according to preset step-length
To the wireless signal, comprising:
According to the preset fixed step size MS adjustment first reception frequency until monitoring the wireless signal, and | MS |
< fe/2, wherein fe is maximum acceptable frequency deviation when demodulating the wireless signal.
It is described in one of the embodiments, gradually to adjust the first reception frequency until monitoring according to preset step-length
To the wireless signal, further includes:
According to the preset variable step size VS adjustment first reception frequency until monitoring the wireless signal, and it is described
| VS |=n* (fe/2), wherein fe is maximum acceptable frequency deviation when demodulating the wireless signal, and n is the random number greater than 1.
It is described in one of the embodiments, gradually to adjust the first reception frequency until monitoring according to preset step-length
To the wireless signal, further includes:
Described first is gradually adjusted according to preset step-length and receives frequency, and according to default on every synchronizing frequency after the adjustment
Monitoring duration monitor the wireless signal, until monitoring the wireless signal.
The carrier frequency that the no crystal oscillator is adjusted according to the carrier wave frequency deviation in one of the embodiments, comprising:
Parameter is generated according to the carrier wave that the carrier wave frequency deviation adjusts the phaselocked loop, to adjust the load that the phaselocked loop generates
Wave frequency rate.
Carrier frequency is adjusted to first according to the given frequency of wireless signal in one of the embodiments, and receives frequency
Wireless signal is monitored, if not monitoring the wireless signal in the first reception frequency, is gradually adjusted according to preset step-length
The whole first reception frequency is set as practical reception frequency up to detecting wireless signal, by the frequency for receiving wireless signal
Rate utilizes the frequency difference by calculating the practical frequency difference received between frequency and the given frequency of wireless signal
Adjust the carrier frequency that the no source crystal oscillator generates.By the correction of the carrier frequency to no crystal oscillator, generation carrier wave can be reduced
The cost of frequency, and it is able to satisfy the requirement to the high-precision and high-quality of carrier frequency.
Electricity is vibrated by the simulation for correcting high-quality using high-precision simulation oscillating circuit in one of the embodiments,
Reference clock of the road to export, so that the method for generating carrier frequency, can not only reduce the generation cost of carrier frequency, and can be full
Foot is to the high-precision of carrier frequency and the demand of high-quality.
In one of the embodiments, when being unable to monitor wireless signal in the first reception frequency, using fixed step size
It gradually adjusts described first and receives frequency, until the wireless signal is monitored, using the adjustment mode of fixed step size, Ke Yigeng
Add and simply and easily monitors wireless signal.
In one of the embodiments, when being unable to monitor wireless signal in the first reception frequency, using variable step size
It gradually adjusts described first and receives frequency, until the wireless signal is monitored, using the adjustment mode of variable step size, Ke Yigeng
Add and quickly monitors wireless signal.
In one of the embodiments, while gradually adjustment first receives frequency, receives in every step and all set in frequency
Certain monitoring duration is set, after monitoring is less than wireless signal in monitoring duration, then carries out the carrier frequency adjustment of next step, institute
The mode for stating society's money monitoring duration can be improved the success rate for monitoring wireless signal.
The present invention also provides a kind of wireless communication carriers frequency correction systems of no crystal oscillator, comprising:
First receives frequency transmitting module, for being adjusted to the carrier frequency of no crystal oscillator according to the tranmitting frequency of wireless signal
First receives frequency, and the tranmitting frequency of the wireless signal is given frequency；
It is practical to receive frequency regulation block, for receiving frequency monitoring wireless signal described first, if described first
It receives and monitors the wireless signal in frequency, then receiving set of frequency for described first is practical reception frequency；If described
The wireless signal is not monitored in first reception frequency, then it is straight gradually to adjust the first reception frequency according to preset step-length
To monitoring the wireless signal, and it will monitor that the reception set of frequency of the wireless signal receives frequency to be practical；
Carrier wave frequency deviation calculates module, for calculating the given frequency and the practical difference received between frequency, and
The difference is determined as carrier wave frequency deviation；
Carrier frequency adjustment module, for adjusting the carrier frequency of the no crystal oscillator according to the carrier wave frequency deviation.
It in one of the embodiments, include no crystal oscillator carrier frequency generation module, the no crystal oscillator carrier frequency generates
Module includes:
Oscillation circuit unit is simulated, for simulating oscillating circuit using the first simulation oscillating circuit correction second to generate ginseng
Examine clock, wherein the first simulation oscillating circuit meets preset frequency range, and the second simulation oscillating circuit meets pre-
If range of mutually making an uproar；
Reference clock output unit, for reference clock input phaselocked loop to be generated carrier frequency.
Described first receive frequency transmitting module in one of the embodiments, comprising:
Systematic error acquiring unit, the systematic error E of the carrier frequency for obtaining the no crystal oscillator；
First receives frequency adjustment unit, for according to the carrier frequency of the no crystal oscillator systematic error E and the nothing
The carrier frequency of no crystal oscillator is adjusted to the first reception frequency F1, and F1 ∈ (F-E, F+E) by the given frequency F of line signal.
The practical reception frequency regulation block in one of the embodiments, comprising:
Fixed step size adjustment unit, for receiving frequency according to preset fixed step size MS adjustment described first until monitoring
To the wireless signal, and | MS | < fe/2, wherein fe is maximum acceptable frequency deviation when demodulating the wireless signal.
The practical reception frequency regulation block in one of the embodiments, further includes:
Variable step size adjustment unit, for receiving frequency according to preset variable step size VS adjustment described first until monitoring
To the wireless signal, and described | VS |=n* (fe/2), wherein fe is maximum acceptable frequency when demodulating the wireless signal
Partially, n is the random number greater than 1.
The practical reception frequency regulation block in one of the embodiments, further includes:
Duration unit is monitored, receives frequency for gradually adjusting described first according to preset step-length, and after the adjustment
The wireless signal is monitored according to preset monitoring duration on every synchronizing frequency, until monitoring the wireless signal.
The carrier frequency adjustment module in one of the embodiments, comprising:
Phaselocked loop adjustment unit, the carrier wave for adjusting the phaselocked loop according to the carrier wave frequency deviation generates parameter, to adjust
The carrier frequency that the whole phaselocked loop generates.
Carrier frequency is adjusted to first according to the given frequency of wireless signal in one of the embodiments, and receives frequency
Wireless signal is monitored, if not monitoring the wireless signal in the first reception frequency, is gradually adjusted according to preset step-length
The whole first reception frequency is set as practical reception frequency up to detecting wireless signal, by the frequency for receiving wireless signal
Rate utilizes the frequency difference by calculating the practical frequency difference received between frequency and the given frequency of wireless signal
Adjust the carrier frequency that the no source crystal oscillator generates.By the correction of the carrier frequency to no crystal oscillator, generation carrier wave can be reduced
The cost of frequency, and it is able to satisfy the requirement to the high-precision and high-quality of carrier frequency.
Electricity is vibrated by the simulation for correcting high-quality using high-precision simulation oscillating circuit in one of the embodiments,
Reference clock of the road to export, so that the method for generating carrier frequency, can not only reduce the generation cost of carrier frequency, and can be full
Foot is to the high-precision of carrier frequency and the demand of high-quality.
In one of the embodiments, when being unable to monitor wireless signal in the first reception frequency, using fixed step size
It gradually adjusts described first and receives frequency, until the wireless signal is monitored, using the adjustment mode of fixed step size, Ke Yigeng
Add and simply and easily monitors wireless signal.
In one of the embodiments, when being unable to monitor wireless signal in the first reception frequency, using variable step size
It gradually adjusts described first and receives frequency, until the wireless signal is monitored, using the adjustment mode of variable step size, Ke Yigeng
Add and quickly monitors wireless signal.
In one of the embodiments, while gradually adjustment first receives frequency, receives in every step and all set in frequency
Certain monitoring duration is set, after monitoring is less than wireless signal in monitoring duration, then carries out the carrier frequency adjustment of next step, institute
The mode for stating setting monitoring duration can be improved the success rate for monitoring wireless signal.
Detailed description of the invention
Fig. 1 is the flow diagram of the wireless communication carriers frequency calibrating method without crystal oscillator of one embodiment；
Fig. 2 is the flow diagram of the wireless communication carriers frequency calibrating method without crystal oscillator of another embodiment；
Fig. 3 is the structural schematic diagram of the wireless communication carriers frequency correction system without crystal oscillator of one embodiment；
Fig. 4 is the structural schematic diagram of the wireless communication carriers frequency correction system without crystal oscillator of another embodiment；
Fig. 5 is the structural schematic diagram of the wireless communication carriers frequency correction system without crystal oscillator of further embodiment.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, right with reference to the accompanying drawings and embodiments
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
Fig. 1 is the flow diagram of the wireless communication carriers frequency calibrating method without crystal oscillator of one embodiment, such as Fig. 1 institute
The wireless communication carriers frequency calibrating method without crystal oscillator shown includes:
The carrier frequency of no crystal oscillator is adjusted to the first reception frequency, institute according to the tranmitting frequency of wireless signal by step S100
The tranmitting frequency for stating wireless signal is given frequency.
Specifically, need the frequency of received wireless signal be it is known, be not only applicable to provide mobile communication service
Operator is equally applicable to bluetooth, ZigBee technology (ZigBee protocol technology) etc..For example, for for TD-LTE network, China
Mobile frequency range is respectively 1880-1900MHZ, 2320-2370MHZ, 2575-2635MHZ, the frequency range of China Unicom
Respectively 2300-2320MHZ, 2555-2575MHZ, the frequency range of China Telecom are respectively 2370-2390MHZ, 2635-
2655MHZ.For example, the wireless signal for such as needing the received 1890MHZ for being China Mobile is then needed the load of no crystal oscillator
Wave frequency rate modulates the reception that 1890MH carries out China Mobile 1890MHZ wireless signal.
The carrier frequency of no crystal oscillator is adjusted to the first reception frequency by the tranmitting frequency according to wireless signal, including is obtained
The systematic error E of the carrier frequency of the no crystal oscillator, according to the systematic error E of the carrier frequency of the no crystal oscillator and described wireless
The carrier frequency of no crystal oscillator is adjusted to the first reception frequency F1, and F1 ∈ (F-E, F+E) by the given frequency F of signal.Specifically,
If the given frequency of the wireless signal is 1890MH, the systematic error of the carrier frequency of no crystal oscillator is 10M, then, selected the
When one reception frequency, selected in the range of 1880MHZ-1900MHZ.
Step S200 receives frequency monitoring wireless signal described first, if monitoring in the first reception frequency
The wireless signal, then receiving set of frequency for described first is practical reception frequency；If being received in frequency not described first
It monitors the wireless signal, then gradually adjusts the first reception frequency according to preset step-length until monitoring described wireless
Signal, and will monitor that the reception set of frequency of the wireless signal receives frequency to be practical.
Specifically, if the wireless signal of the 1890MHZ of China Mobile can be received in the carrier frequency of 1890MHZ,
Then 1890MHZ is exactly practical reception frequency.But since there are systematic errors, there are certain frequency is inclined for the carrier frequency of no crystal oscillator
Difference can not usually receive the wireless signal of 1890MHZ in the first reception frequency set, need to carry out further
Adjustment.
It is adjusted in the carrier signal to no crystal oscillator according to preset step-length, such as according to the step-length of 1MHZ, by 1890
Carrier frequency is adjusted to 1891MHZ, and the nothing for receiving the 1890MHZ of China Mobile is continued to attempt in the carrier frequency of 1891MHZ
Line signal, does not receive such as, continues the wireless of the 1890MHZ that carrier frequency is adjusted to 1892MHZ trial reception China Mobile
Signal does not still receive such as, continues to be adjusted to 1893MHZ trial reception, such as receive, then the carrier frequency of 1893MHZ is
It is practical to receive frequency.
Step S300 calculates the given frequency and the practical difference received between frequency, and the difference is true
It is set to carrier wave frequency deviation.
Specifically, the difference of the practical given frequency finger tip for receiving frequency and the wireless signal is determined as carrier frequency
Partially.The wireless signal of the 1890MHZ of China Mobile is such as received in the carrier frequency of 1893MHZ, then carrier wave frequency deviation is 3MHZ.
Step S400 adjusts the carrier frequency of the no crystal oscillator according to the carrier wave frequency deviation.
Specifically, the carrier wave frequency deviation, is the actual after verifying of the system of the carrier frequency of the no crystal oscillator
Systematic error, after being adjusted according to system of the carrier wave frequency deviation to the carrier frequency of the no crystal oscillator, it can utilize warp
The carrier frequency for having crossed the corrected no crystal oscillator of carrier wave frequency deviation connects the wireless signal for receiving other frequency points.
In the present embodiment, according to the given frequency of wireless signal by carrier frequency adjust to first receive frequency monitoring without
Line signal, if it is described first reception frequency do not monitor the wireless signal, gradually adjusted according to preset step-length described in
The frequency for receiving wireless signal is set as practical reception frequency, passed through by the first reception frequency up to detecting wireless signal
The practical frequency difference received between frequency and the given frequency of wireless signal is calculated, using described in the frequency difference adjustment
The carrier frequency that no source crystal oscillator generates.By the correction of the carrier frequency to no crystal oscillator, can reduce generate carrier frequency at
This, and it is able to satisfy the requirement to the high-precision and high-quality of carrier frequency.
It is described in one of the embodiments, gradually to adjust the first reception frequency until monitoring according to preset step-length
To the wireless signal, including according to the preset fixed step size MS adjustment first reception frequency until monitoring described wireless
Signal, and | MS | < fe/2, wherein fe is maximum acceptable frequency deviation when demodulating the wireless signal.Specifically, in general, according to
The adjustment mode of fixed step size, it is assumed that maximum acceptable frequency deviation when demodulating the wireless signal is 4MHZ, then receives first
On the basis of frequency, at most increases 2MHZ every time or at most reduce 2MHZ, until receiving wireless signal.Using fixed step size
Adjustment mode can easily monitor wireless signal with simpler.
It is described in one of the embodiments, gradually to adjust the first reception frequency until monitoring according to preset step-length
It further include according to the preset variable step size VS adjustment first reception frequency until monitoring the nothing to the wireless signal
Line signal, and described | VS |=n* (fe/2), wherein fe is maximum acceptable frequency deviation when demodulating the wireless signal, and n is big
In 1 random number.In general, according to the adjustment mode of variable step size, it is assumed that demodulate the maximum acceptable frequency when wireless signal
Partially it is 4MHZ, then on the basis of first receives frequency, is multiplied, obtains using 2MHZ as step-length with the random value every time according to random number
A variable step size is taken to be adjusted the first reception frequency, until receiving wireless signal.Further, due to variable
The step-length of step-length is simultaneously not fixed, and variable step size may be positive and may also be negative, and is being received using variable step size to described first
It when frequency is adjusted, needs to adjust every time in the frequency not monitored to one, it is assumed that the carrier frequency F without crystal oscillator0's
Reference clock error is E1%, receives frequency in [F using variable step size adjusted first0* (1-E1%): F0*(1-+
E1% in the range of)], it is rapidly performed by adjustment, to guarantee quickly to adjust to the reception frequency that can receive wireless signal.It adopts
With the adjustment mode of variable step size, wireless signal can be more quickly monitored.
It is described in one of the embodiments, gradually to adjust the first reception frequency until monitoring according to preset step-length
It further include gradually adjusting described first according to preset step-length to receive frequency, and every step after the adjustment to the wireless signal
The wireless signal is monitored according to preset monitoring duration in frequency, until monitoring the wireless signal.Specifically, setting prison
The purpose for surveying duration, can prevent from adjusting to a receptions frequency just when because just without wireless signal or wirelessly
Signal is weaker and takes for being not received by, and continues the adjustment of next step.The mode of the setting monitoring duration can mention
Height monitors the success rate of wireless signal.
Fig. 2 is the flow diagram of the wireless communication carriers frequency calibrating method without crystal oscillator of another embodiment, such as Fig. 2
Shown in the wireless communication carriers frequency calibrating method without crystal oscillator include:
Step S80a, using first simulation oscillating circuit correction the second simulation oscillating circuit to generate reference clock, wherein
The first simulation oscillating circuit meets preset frequency range, and the second simulation oscillating circuit meets preset phase and makes an uproar model
It encloses.
Specifically, being utilized using the first simulation oscillating circuit for meeting preset frequency range as high-precision oscillating source
Meet preset phase make an uproar range second simulation oscillating circuit, as high-quality oscillation source, using high-precision oscillating source to Gao Pin
After matter oscillation source is corrected, high-quality and high-precision reference clock can be exported.
Reference clock input phaselocked loop is generated carrier frequency by step S90a.
Specifically, after inputting phaselocked loop, generating using the reference clock of the high-precision high-quality and meeting high-precision and height
The carrier frequency of quality.
The carrier frequency of no crystal oscillator is adjusted to the first reception frequency, institute according to the tranmitting frequency of wireless signal by step S100a
The tranmitting frequency for stating wireless signal is given frequency.
Specifically, with step S100.
Step S200a receives frequency monitoring wireless signal described first, if monitoring in the first reception frequency
The wireless signal, then receiving set of frequency for described first is practical reception frequency；If being received in frequency not described first
It monitors the wireless signal, then gradually adjusts the first reception frequency according to preset step-length until monitoring described wireless
Signal, and will monitor that the reception set of frequency of the wireless signal receives frequency to be practical.
Specifically, with step S200.
Step S300a calculates the given frequency and the practical difference received between frequency, and the difference is true
It is set to carrier wave frequency deviation.
Specifically, with step S300.
Step S400a generates parameter according to the carrier wave that the carrier wave frequency deviation adjusts the phaselocked loop, to adjust the locking phase
The carrier frequency that ring generates.
Specifically, the carrier wave for adjusting the phaselocked loop generates parameter, including the adjustment lock by the carrier wave frequency deviation
The frequency dividing ratio etc. of phase ring, to achieve the purpose that adjust the carrier frequency of phaselocked loop generation.The carrier wave for adjusting the phaselocked loop generates
Parameter can be used for solving generating the offset of carrier frequency caused by a variety of causes such as temperature.
In the present embodiment, by correcting the simulation oscillating circuit of high-quality using high-precision simulation oscillating circuit with defeated
Reference clock out so that the method for generating carrier frequency, can not only reduce the generation cost of carrier frequency, and is able to satisfy to load
The high-precision of wave frequency rate and the demand of high-quality.
Further, in one of the embodiments, when system multi-channel communicates, every road signal of communication all uses each self-correcting
The carrier frequency just generated, the carrier frequency that each self-correcting generates are to generate ginseng by the carrier wave of each self-correction phase-locked loop
What number was realized.In the multichannel communication multiple telecommunication, the carrier wave that every road communicates the phaselocked loop of the different correction of all each self-generating generates parameter, can
So that the road multichannel communication multiple telecommunication Zhong Mei signal can be received accurately, the reception essence of the carrier frequency of multiplex communication is improved
Degree.
Fig. 3 is the structural schematic diagram of the wireless communication carriers frequency correction system without crystal oscillator of one embodiment, such as Fig. 3 institute
The wireless communication carriers frequency correction system without crystal oscillator shown includes:
First receives frequency transmitting module 100, for according to the tranmitting frequency of wireless signal by the carrier frequency of no crystal oscillator
It is adjusted to the first reception frequency, the tranmitting frequency of the wireless signal is given frequency.Including systematic error acquiring unit, for obtaining
Take the systematic error E of the carrier frequency of the no crystal oscillator；First receives frequency adjustment unit, for the load according to the no crystal oscillator
The carrier frequency of no crystal oscillator is adjusted to the first reception frequency by the systematic error E of the wave frequency rate and given frequency F of the wireless signal
F1, and F1 ∈ (F-E, F+E).
It is practical to receive frequency regulation block 200, for receiving frequency monitoring wireless signal described first, if described the
The wireless signal is monitored in one reception frequency, then receiving set of frequency for described first is practical reception frequency；If institute
It states and does not monitor the wireless signal in the first reception frequency, then gradually adjust described first according to preset step-length and receive frequency
Until monitoring the wireless signal, and it will monitor that the reception set of frequency of the wireless signal receives frequency to be practical.Packet
Fixed step size adjustment unit is included, for described up to monitoring according to the preset fixed step size MS adjustment first reception frequency
Wireless signal, and | MS | < fe/2, wherein fe is maximum acceptable frequency deviation when demodulating the wireless signal.It further include variable step
Long adjustment unit, for receiving frequency until monitoring the wireless communication according to preset variable step size VS adjustment described first
Number, and described | VS |=n* (fe/2), wherein fe is maximum acceptable frequency deviation when demodulating the wireless signal, and n is greater than 1
Random number.Further include monitoring duration unit, receives frequency for gradually adjusting described first according to preset step-length, and adjusting
The wireless signal is monitored according to preset monitoring duration on every synchronizing frequency afterwards, until monitoring the wireless signal.
Carrier wave frequency deviation calculates module 300, for calculating the given frequency and the practical difference received between frequency,
And the difference is determined as carrier wave frequency deviation.
Carrier frequency adjustment module 400, for adjusting the carrier frequency of the no crystal oscillator according to the carrier wave frequency deviation.
In the present embodiment, according to the given frequency of wireless signal by carrier frequency adjust to first receive frequency monitoring without
Line signal, if it is described first reception frequency do not monitor the wireless signal, gradually adjusted according to preset step-length described in
The frequency for receiving wireless signal is set as practical reception frequency, passed through by the first reception frequency up to detecting wireless signal
The practical frequency difference received between frequency and the given frequency of wireless signal is calculated, using described in the frequency difference adjustment
The carrier frequency that no source crystal oscillator generates.By the correction of the carrier frequency to no crystal oscillator, can reduce generate carrier frequency at
This, and it is able to satisfy the requirement to the high-precision and high-quality of carrier frequency.
In the present embodiment, it when being unable to monitor wireless signal in the first reception frequency, is gradually adjusted using fixed step size
Whole described first receives frequency, until monitor the wireless signal, it, can be simpler using the adjustment mode of fixed step size
Easily monitor wireless signal.
In the present embodiment, it when being unable to monitor wireless signal in the first reception frequency, is gradually adjusted using variable step size
Whole described first receives frequency, until monitor the wireless signal, it, can more quickly using the adjustment mode of variable step size
Monitor wireless signal.
In the present embodiment, it while gradually adjustment first receives frequency, receives in every step and is all arranged centainly in frequency
Monitoring duration, monitoring duration in monitoring less than wireless signal after, then carry out next step carrier frequency adjustment, the setting
The mode of monitoring duration can be improved the success rate for monitoring wireless signal.
Fig. 4 is the structural schematic diagram of the wireless communication carriers frequency correction system without crystal oscillator of another embodiment, such as Fig. 4
Shown in the wireless communication carriers frequency correction system without crystal oscillator include:
Including no crystal oscillator carrier frequency generation module 90, the no crystal oscillator carrier frequency generation module 90 includes simulation oscillation
Circuit unit, for simulating oscillating circuit using the first simulation oscillating circuit correction second to generate reference clock, wherein described
First simulation oscillating circuit meets preset frequency range, and the second simulation oscillating circuit meets preset phase and makes an uproar range；Ginseng
Clock output unit is examined, for reference clock input phaselocked loop to be generated carrier frequency.
First receives frequency transmitting module 100, for according to the tranmitting frequency of wireless signal by the carrier frequency of no crystal oscillator
It is adjusted to the first reception frequency, the tranmitting frequency of the wireless signal is given frequency.
It is practical to receive frequency regulation block 200, for receiving frequency monitoring wireless signal described first, if described the
The wireless signal is monitored in one reception frequency, then receiving set of frequency for described first is practical reception frequency；If institute
It states and does not monitor the wireless signal in the first reception frequency, then gradually adjust described first according to preset step-length and receive frequency
Until monitoring the wireless signal, and it will monitor that the reception set of frequency of the wireless signal receives frequency to be practical.
Carrier wave frequency deviation calculates module 300, for calculating the given frequency and the practical difference received between frequency,
And the difference is determined as carrier wave frequency deviation.
Carrier frequency adjustment module 400, for adjusting the carrier frequency of the no crystal oscillator according to the carrier wave frequency deviation.Including
Phaselocked loop adjustment unit, the carrier wave for adjusting the phaselocked loop according to the carrier wave frequency deviation generates parameter, to adjust the lock
The carrier frequency that phase ring generates.
In the present embodiment, by correcting the simulation oscillating circuit of high-quality using high-precision simulation oscillating circuit with defeated
Reference clock out so that the method for generating carrier frequency, can not only reduce the generation cost of carrier frequency, and is able to satisfy to load
The high-precision of wave frequency rate and the demand of high-quality.
Fig. 5 is the structural schematic diagram of the wireless communication carriers frequency correction system without crystal oscillator of further embodiment, such as Fig. 5
Shown in the wireless communication carriers frequency correction system without crystal oscillator include:
High-precision oscillating source 01, for generating the oscillator signal for meeting preset frequency accuracy requirement.
High-quality oscillation source 02 meets preset phase and makes an uproar than desired oscillator signal for generating.
Phase-locked loop pll 03 believes frequency using the carrier wave that reference clock generates frequency.
Simulation receives circuit 04, receives wireless signal using antenna.
Band appraising frequency bias demodulator 05 receives the signal that circuit 04 receives for demodulating simulation, and utilizes and calculate
Carrier wave frequency deviation correct phaselocked loop 03.
In the present embodiment, according to the given frequency of wireless signal by carrier frequency adjust to first receive frequency monitoring without
Line signal, if it is described first reception frequency do not monitor the wireless signal, gradually adjusted according to preset step-length described in
The frequency for receiving wireless signal is set as practical reception frequency, passed through by the first reception frequency up to detecting wireless signal
The practical frequency difference received between frequency and the given frequency of wireless signal is calculated, using described in the frequency difference adjustment
The carrier frequency that no source crystal oscillator generates.By the correction of the carrier frequency to no crystal oscillator, can reduce generate carrier frequency at
This, and it is able to satisfy the requirement to the high-precision and high-quality of carrier frequency.And by utilizing high-precision simulation oscillating circuit school
Reference clock of the simulation oscillating circuit of positive high-quality to export, so that the method for generating carrier frequency, can not only reduce carrier wave
The generation cost of frequency, and it is able to satisfy the demand of the high-precision and high-quality to carrier frequency.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (14)
1. a kind of wireless communication carriers frequency calibrating method of no crystal oscillator, which is characterized in that the described method includes:
The carrier frequency of no crystal oscillator is adjusted to the first reception frequency, the hair of the wireless signal according to the tranmitting frequency of wireless signal
Radio frequency rate is given frequency；
Frequency monitoring wireless signal is received described first, if monitoring the wireless signal in the first reception frequency,
Then receiving set of frequency for described first is practical reception frequency；If not monitored in the first reception frequency described wireless
Signal then gradually adjusts the first reception frequency until monitoring the wireless signal according to preset step-length, and will monitoring
Reception set of frequency to the wireless signal is practical reception frequency；
The given frequency and the practical difference received between frequency are calculated, and the difference is determined as carrier wave frequency deviation；
The carrier frequency of the no crystal oscillator is adjusted according to the carrier wave frequency deviation；
The wherein carrier frequency of the no crystal oscillator, comprising:
Using first simulation oscillating circuit correction the second simulation oscillating circuit to generate reference clock, wherein first simulation
Oscillating circuit meets preset frequency range, and the second simulation oscillating circuit meets preset phase and makes an uproar range；
Reference clock input phaselocked loop is generated into carrier frequency.
2. the wireless communication carriers frequency calibrating method of no crystal oscillator according to claim 1, which is characterized in that the basis
The carrier frequency of no crystal oscillator is adjusted to the first reception frequency by the tranmitting frequency of wireless signal, comprising:
Obtain the systematic error E of the carrier frequency of the no crystal oscillator；
According to the given frequency F of the systematic error E of the carrier frequency of the no crystal oscillator and the wireless signal, by the load of no crystal oscillator
Wave frequency rate is adjusted to the first reception frequency F1, and F1 ∈ (F-E, F+E).
3. the wireless communication carriers frequency calibrating method of no crystal oscillator according to claim 1, which is characterized in that it is described according to
Preset step-length gradually adjusts the first reception frequency until monitoring the wireless signal, comprising:
According to the preset fixed step size MS adjustment first reception frequency until monitoring the wireless signal, and | MS | < fe/
2, wherein fe is maximum acceptable frequency deviation when demodulating the wireless signal.
4. the wireless communication carriers frequency calibrating method of no crystal oscillator according to claim 1, which is characterized in that it is described according to
Preset step-length gradually adjusts the first reception frequency until monitoring the wireless signal, further includes:
According to the preset variable step size VS adjustment first reception frequency until monitoring the wireless signal, and | VS |=n*
(fe/2), maximum acceptable frequency deviation when wherein fe is the demodulation wireless signal, n are the random number greater than 1.
5. the wireless communication carriers frequency calibrating method of no crystal oscillator according to claim 1, which is characterized in that it is described according to
Preset step-length gradually adjusts the first reception frequency until monitoring the wireless signal, further includes:
Described first is gradually adjusted according to preset step-length and receives frequency, and according to preset prison on every synchronizing frequency after the adjustment
It surveys duration and monitors the wireless signal, until monitoring the wireless signal.
6. the wireless communication carriers frequency calibrating method of no crystal oscillator according to claim 1, which is characterized in that the basis
The carrier wave frequency deviation adjusts the carrier frequency of the no crystal oscillator, comprising:
Parameter is generated according to the carrier wave that the carrier wave frequency deviation adjusts the phaselocked loop, to adjust the carrier frequency that the phaselocked loop generates
Rate.
7. a kind of wireless communication carriers frequency correction system of no crystal oscillator characterized by comprising
First receives frequency transmitting module, for the carrier frequency of no crystal oscillator to be adjusted to first according to the tranmitting frequency of wireless signal
Frequency is received, the tranmitting frequency of the wireless signal is given frequency；
It is practical to receive frequency regulation block, for receiving frequency monitoring wireless signal described first, if being received described first
The wireless signal is monitored in frequency, then receiving set of frequency for described first is practical reception frequency；If described first
It receives and does not monitor the wireless signal in frequency, then gradually adjust described first according to preset step-length and receive frequency until prison
The wireless signal is measured, and will monitor that the reception set of frequency of the wireless signal receives frequency to be practical；
Carrier wave frequency deviation calculates module, for calculating the given frequency and the practical difference received between frequency, and by institute
It states difference and is determined as carrier wave frequency deviation；
Carrier frequency adjustment module, for adjusting the carrier frequency of the no crystal oscillator according to the carrier wave frequency deviation；
Without crystal oscillator carrier frequency generation module, the no crystal oscillator carrier frequency generation module includes:
Oscillation circuit unit is simulated, when for using first simulation oscillating circuit correction the second simulation oscillating circuit to generate reference
Clock, wherein the first simulation oscillating circuit meets preset frequency range, and the second simulation oscillating circuit meets preset
It mutually makes an uproar range；
Reference clock output unit, for reference clock input phaselocked loop to be generated carrier frequency.
8. the wireless communication carriers frequency correction system of no crystal oscillator according to claim 7, which is characterized in that described first
Receive frequency transmitting module, comprising:
Systematic error acquiring unit, the systematic error E of the carrier frequency for obtaining the no crystal oscillator；
First receives frequency adjustment unit, for according to the carrier frequency of the no crystal oscillator systematic error E and the wireless communication
Number given frequency F, the carrier frequency of no crystal oscillator is adjusted to the first reception frequency F1, and F1 ∈ (F-E, F+E).
9. the wireless communication carriers frequency correction system of no crystal oscillator according to claim 7, which is characterized in that the reality
Receive frequency regulation block, comprising:
Fixed step size adjustment unit, for receiving frequency until monitoring institute according to preset fixed step size MS adjustment described first
Wireless signal is stated, and | MS | < fe/2, wherein fe is maximum acceptable frequency deviation when demodulating the wireless signal.
10. the wireless communication carriers frequency correction system of no crystal oscillator according to claim 7, which is characterized in that the reality
Border receives frequency regulation block, further includes:
Variable step size adjustment unit, for receiving frequency until monitoring institute according to preset variable step size VS adjustment described first
Wireless signal is stated, and | VS |=n* (fe/2), wherein fe is maximum acceptable frequency deviation when demodulating the wireless signal, and n is big
In 1 random number.
11. the wireless communication carriers frequency correction system of no crystal oscillator according to claim 7, which is characterized in that the reality
Border receives frequency regulation block, further includes:
Duration unit is monitored, receives frequency, and every step after the adjustment for gradually adjusting described first according to preset step-length
The wireless signal is monitored according to preset monitoring duration in frequency, until monitoring the wireless signal.
12. the wireless communication carriers frequency correction system of no crystal oscillator according to claim 7, which is characterized in that the load
Wave frequency rate adjusts module, comprising:
Phaselocked loop adjustment unit, the carrier wave for adjusting the phaselocked loop according to the carrier wave frequency deviation generates parameter, to adjust
State the carrier frequency of phaselocked loop generation.
13. a kind of storage medium, is stored thereon with computer program, which is characterized in that can when described program is executed by processor
Realize the wireless communication carriers frequency calibrating method such as no crystal oscillator described in any one of claims 1 to 6.
14. a kind of terminal device, including storage medium, processor and storage can be run on a storage medium and on a processor
Computer program, the processor realize the nothing such as no crystal oscillator described in any one of claims 1 to 6 when executing described program
Line communication carrier frequency calibrating method.
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| CN107454555B (en) * | 2017-06-30 | 2021-02-09 | 建荣半导体（深圳）有限公司 | Phase-locked loop parameter adjusting method, Bluetooth module, Bluetooth slave device and Bluetooth system |
| CN109039574B (en) * | 2018-08-21 | 2021-11-23 | 维沃移动通信有限公司 | Method for reducing frequency deviation and terminal equipment thereof |
| CN117353833B (en) * | 2023-09-22 | 2024-07-12 | 恩平市天行电子科技有限公司 | Wireless signal receiving method and related device based on interference detection |
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| CN1549622A (en) * | 2003-05-23 | 2004-11-24 | 乐金电子（中国）研究开发中心有限公 | Method and apparatus for carrier deviation estimation in mobile communication system |
| CN102236363A (en) * | 2010-04-28 | 2011-11-09 | 上海华虹集成电路有限责任公司 | Full-speed USB (Universal Serial Bus) equipment |
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