CN107911156A - Digital beam froming method and device - Google Patents
Digital beam froming method and device Download PDFInfo
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- CN107911156A CN107911156A CN201711498129.XA CN201711498129A CN107911156A CN 107911156 A CN107911156 A CN 107911156A CN 201711498129 A CN201711498129 A CN 201711498129A CN 107911156 A CN107911156 A CN 107911156A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
- H04B7/0842—Weighted combining
- H04B7/086—Weighted combining using weights depending on external parameters, e.g. direction of arrival [DOA], predetermined weights or beamforming
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Abstract
This application discloses a kind of digital beam froming method and device, it is related to field of communication technology, solves the problems, such as that the resource of FPGA memory storages in correlation technique is limited.The described method includes：Obtain the corresponding signal type of input signal；According to the signal type, the required weight coefficient vector of input signal weighted sum is configured；According to the signal type, the transmission path of the input signal is determined；During signal transmission is carried out according to the transmission path, summation is weighted to the input signal according to the weight coefficient vector, forms the corresponding digital beam of the signal type.The application is suitable for digital beam froming.
Description
Technical field
The present invention relates to field of communication technology, particularly with regard to digital beam froming method and device.
Background technology
Digital beam is the important branch to form array signal processing field, in order to allow sensor array to strengthen from certain
The signal of a or multiple certain parties always, by being weighted to multiple array channel data, can reach enhancing signal, suppress
Interference, improves signal-to-noise ratio.The digital beam of formation can be applied to every field, such as national economy and military affairs key areas,
It is more to be also applied to wisdom classroom, new generation of wireless communication, radar, sonar, seismic survey, radio astronomy, medical diagnosis etc.
A field.
When carrying out Wave beam forming, the received signal of each array element of array antenna by mixing, in put and quadrature phase inspection
Ripple, is changed into just intersecting vision signal I and Q component, then is converted to digital quantity I and Q via A/D converter respectively, and digital signal is defeated
Enter Wave beam forming arithmetic unit, fish N groups weights carry out complex multiplication operation respectively, that is, obtain the signal of required N number of wave beam passage.
Digital beam froming arithmetic unit is realized by Field Programmable Logic Array FPGA by programming, and is substantially carried out storage and the handle of weights
Value information needed for each road wave beam is stored in the memory module inside FPGA, by carrying out multiply-add operation, to realize more ripples
The generation of beam.At present, the main implementation of digital beam froming has following several：Narrow-band beam formation, broad-band EDFA,
Multibeam synthesis etc., both for the digital beam froming of single mode.Due to the complexity of working environment, the numeral of single mode
Form of beams can not meet the change of external environment, can be in FPGA usually in the situation in face of needing different mode digital beam
It is middle that multiple relatively independent modules are set, the digital beam of different mode is realized respectively, however, the resource of FPGA memory storages has
Limit, can not bear the common presence of various modes, cause FPGA resource consumption excessive so that processing element number of array is very limited amount of
Wave beam forming performance receives very big limitation.
The content of the invention
An embodiment of the present invention provides digital beam froming method and device, solves FPGA memory storages in correlation technique
The problem of resource is limited.
One side according to embodiments of the present invention, there is provided a kind of digital beam froming method, including：Obtain input signal
Corresponding signal type；According to the signal type, the required weight coefficient vector of input signal weighted sum is configured；Root
According to the signal type, the transmission path of the input signal is determined；The mistake of signal transmission is being carried out according to the transmission path
Cheng Zhong, is weighted summation to the input signal according to the weight coefficient vector, forms the corresponding numeral of the signal type
Wave beam.
Further, it is described according to the signal type, configure the required weight coefficient of input signal weighted sum
Vector includes：The weight coefficient vector for forming digital beam with the signal type and matching, the number are found out from database
The corresponding weight coefficient vector of different digital wave beam is formed according to being previously stored with storehouse；Or according to the signal type dynamic generation with
The signal type forms the weight coefficient vector that digital beam matches.
Further, described according to the signal type, determining the transmission path of the input signal includes：According to described
Signal type, determines the input signal in signal processing mode needed for transmitting procedure；According to the signal processing mode,
Determine the transmission path of the input signal.
Further, described during signal transmission is carried out according to the transmission path, according to the weight coefficient
Vector is weighted summation to the input signal, is formed before the corresponding digital beam of the signal type, the method is also
Including：Selecting switch state in the transmission path is controlled according to the transmission path, according to the selecting switch state of control
Carry out signal transmission.
Further, the input signal be multiple passages signal, it is described according to the weight coefficient vector to described defeated
Enter signal and be weighted summation, forming the corresponding digital beam of the signal type includes：Adjusted according to the weight coefficient vector
The sense of input signal in multiple passages；Input signal after adjustment sense is overlapped, forms the signal
The corresponding digital beam of type.
Further, before the corresponding signal type of the acquisition input signal, the method further includes：It is pre-configured with
The corresponding number of channels of input signal, the difference number of channels are configured with different signal cache way；Described according to institute
Signal type is stated, after the transmission path for determining the input signal, the method further includes：According to the signal cache way
Caching is grouped to the input signal.
Further, it is described that summation is weighted to the input signal according to the weight coefficient vector, form the letter
Number corresponding digital beam of type further includes：The weighted sum signal of feedback is received, is repeated according to the weight coefficient vector to institute
State input signal and the weighted sum signal for receiving feedback is weighted summation.
Another aspect according to embodiments of the present invention, there is provided a kind of digital beam froming device, including：Acquiring unit, is used
In the corresponding signal type of acquisition input signal；First dispensing unit, for according to the signal type, configuring the input letter
Number required weight coefficient vector of weighted sum；Determination unit, for according to the signal type, determining the input signal
Transmission path；Generation unit, for according to the transmission path carry out signal transmission during, according to the weight coefficient to
Amount is weighted summation to the input signal, forms the corresponding digital beam of the signal type.
Further, first dispensing unit, forms specifically for being found out from database with the signal type
The weight coefficient vector that digital beam matches, is previously stored with to form the corresponding weight coefficient of different digital wave beam in the database
Vector；Or the weight coefficient vector to be matched according to the signal type dynamic generation and signal type formation digital beam.
Further, the determination unit includes：First determining module, for according to the signal type, determining described
Input signal is in signal processing mode needed for transmitting procedure；Second determining module, for according to the signal processing mode,
Determine the transmission path of the input signal.
Further, described device further includes：Control unit, for carrying out signal according to the transmission path described
During transmission, summation is weighted to the input signal according to the weight coefficient vector, forms the signal type pair
Before the digital beam answered, the selecting switch state in the transmission path is controlled according to the transmission path, according to control
Selecting switch state carries out signal transmission.
Further, the input signal is the signal of multiple passages, and the generation unit includes：Module is adjusted, is used for
The sense of input signal in multiple passages is adjusted according to the weight coefficient vector；Generation module, for signal side will to be adjusted
Input signal backward is overlapped, and forms the corresponding digital beam of the signal type.
Further, described device further includes：Second dispensing unit, in the corresponding signal of the acquisition input signal
Before type, the corresponding number of channels of input signal is pre-configured with, the difference number of channels is configured with different signal cachings
Mode；Buffer unit, for described according to the signal type, after the transmission path for determining the input signal, according to
The signal cache way is grouped caching to the input signal.
Further, the generation unit further includes：Receiving module, for receiving the weighted sum signal of feedback, according to
The weight coefficient vector repeats to be weighted summation to the input signal and the weighted sum signal for receiving feedback.
It is that the input signal of unlike signal type configures not according to the corresponding signal type of input signal by the present invention
The same required weight coefficient vector of weighted sum, according to the corresponding signal type of input signal, determines the transmission of input signal
Path, since different types of input signal corresponds to the digital light beam of unlike signal type, further according to transmission path into
During row signal transmission, summation is weighted input signal according to weight coefficient vector, forms unlike signal type and corresponds to
Digital light beam, can flexibly generate the characteristic of different type numeral light beam for the increase of different type input signal.With the prior art
The digital beam froming method that middle system is only possible to produce single mode digital beam is compared, and the embodiment of the present invention makes full use of system
Resource, can with flexible configuration store or generate can dynamic memory unlike signal type weight coefficient vector, and determine different letters
The transmission path of number type, after the corresponding signal type of input signal is got, according to not by signal type, neatly for
Unlike signal selects different transmission path and the required weight coefficient vector of weighted sum, it is possible to achieve unlike signal type
Corresponding digital beam, it is easy to operate, without setting multiple and different signal types to correspond to the independent mould of digital beam in systems
Block, it is cost-effective, enhance the expandability of system.
Brief description of the drawings
Attached drawing described herein is used for providing a further understanding of the present invention, forms the part of the application, this hair
Bright schematic description and description is used to explain the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the flow chart one of digital beam froming method according to embodiments of the present invention；
Fig. 2 is the flowchart 2 of digital beam froming method according to embodiments of the present invention；
Fig. 3 is the structure diagram one of digital beam froming device according to embodiments of the present invention；
Fig. 4 is the structure diagram two of digital beam froming device according to embodiments of the present invention；
Fig. 5 is the structure diagram three according to the digital beam froming device of the embodiment of the present invention；
Fig. 6 is the control flow chart according to the digital beam froming of the embodiment of the present invention；
Fig. 7 is to form schematic diagram according to narrow-band beam of the embodiment of the present invention；
Fig. 8 is according to broad-band EDFA schematic diagram of the embodiment of the present invention；
Fig. 9 is according to Multibeam synthesis schematic diagram of the embodiment of the present invention.
Embodiment
Come that the present invention will be described in detail below with reference to attached drawing and in conjunction with the embodiments.It should be noted that do not conflicting
In the case of, the feature in embodiment and embodiment in the application can be mutually combined.
A kind of digital beam froming method is provided in the present embodiment, and Fig. 1 is digital wave according to embodiments of the present invention
The flow chart one of beam forming method, as shown in Figure 1, the flow includes the following steps：
Step S101, obtains the corresponding signal type of input signal；
Wherein, input signal is usually the array element signals collected using sensor array, can be corresponded to according to signal source
The different types of signal of input of signal type, such as corresponds to the different demarcation of the ratio between signal bandwidth and centre frequency according to signal source
For broadband signal, narrow band signal etc., or according to signal source need to generate the different broadband signals, narrow of being divided into of digital beam
Band signal and multiple beam signal, the embodiment of the present invention is without limiting.
For the embodiment of the present invention, input letter can be specifically used as by the signal that the array element in array antenna receives
Number, equivalent to one receiving channel of each array element can have multiple array elements, that is, multiple receiving channels here, and the present invention is real
Example is applied to the quantity of array element without limiting.
The corresponding signal type of input signal incided due to different signal source acquired in array antenna is different, works as signal
When source is narrow band signal, input signal frequency band is relatively narrow, less comprising frequency content, without carrying out excessive Signal Pretreatment, when
When signal source is broadband signal, input signal frequency band is wider, more comprising frequency content, it is necessary to carry out Signal Pretreatment, obtains
Each frequency component, so that output meets the digital light beam of signal type.The embodiment of the present invention is by obtaining input signal pair
The signal type answered, different transmission path and weight vector are configured for the input signal of unlike signal type, can
Flexibly to form the digital beam of unlike signal type.
Step S102, according to the signal type, configures the required weight coefficient vector of input signal weighted sum；
Since the direction of array antenna array element is omnidirectional, it is necessary to which the input signal of different directions array element is weighted
Summation, by the directive gain of the input signal of different directions array element aggregation in one direction, equivalent to foring a digital wave
Beam.The required weight coefficient vector of digital beam that is formed for unlike signal type simultaneously differs, if by narrow band signal
The weight coefficient vector of the digital beam of formation is directly used in the digital beam to form broadband signal, and meeting can not root due to broadband signal
The selection of different weight coefficient vectors is realized according to different frequency, causes the beam direction of formed different frequency to be distorted.
The core of digital beam froming is the configuration of weight coefficient vector, to be formed for the embodiment of the present invention by prestoring
The required weight coefficient limitation of digital beam of unlike signal type, so that according to the input signal of unlike signal type, configuration
The required weight coefficient vector of input signal weighted sum.For example, if input signal is narrow band signal, element number of array M,
ωmRepresent the weight coefficient on array element m, the required weight coefficient vector of narrow band signal weighted sum can be [ω0,ω1,...,
ωM-1]T。
It should be noted that the weighted sum coefficient that the input signal of unlike signal type is configured in the embodiment of the present invention
Vector is not fixed, and the weighting that unlike signal type digital beam can be formed according to signal type dynamic adjustment is asked
And coefficient vector, so that flexible configuration system can form the digital beam of unlike signal type.
Step S103, according to the signal type, determines the transmission path of the input signal；
Due to the required processing mode of the input signal of unlike signal type and the required weight coefficient of weighted sum
Limitation differs, and required transmission path is different, for example, for the less narrow band signal of frequency content then without carrying out
Excessive Signal Pretreatment, is directly weighted read group total according to the weight coefficient vector of configuration, more for frequency content
Broadband signal then needs to carry out Signal Pretreatment, such as Fourier transformation or filtering process, then in the weight coefficient according to configuration
Vector is weighted read group total, then needs to carry out part signal pretreatment for multibeam signals, then according to configuration
Weight coefficient vector is weighted read group total.
For the embodiment of the present invention, according to the signal type of varying input signal, the transmission path of input signal is determined, it is real
The flexible configuration of existing signal transmission path, so as to form the digital beam of unlike signal type.
Step S104, during signal transmission is carried out according to the transmission path, according to the weight coefficient vector pair
The input signal is weighted summation, forms the corresponding digital beam of the signal type.
For the embodiment of the present invention, after the transmission path of input signal is determined, can by control multiple selector come
Control input signal carries out signal transmission according to transmission path, during being transmitted according to transmission path, it is necessary to defeated
Enter signal and carry out Signal Pretreatment and weighted sum calculating, so as to form the corresponding digital beam of signal type.
It should be noted that and the input signal of not all signal type be required for carrying out Signal Pretreatment, the present invention is real
Applying example can be with the transmission path of flexible configuration input signal, for the input signal that need not be pre-processed, by controlling multichannel to select
Select device and come whether control input signal behavior carries out Signal Pretreatment, the number of Signal Pretreatment and Signal Pretreatment mode
Deng, the embodiment of the present invention to the path that multiple selector can be realized without limiting.
A kind of digital beam froming method provided in an embodiment of the present invention, according to the corresponding signal type of input signal, is
The input signal of unlike signal type configures the different required weight coefficient vectors of weighted sum, corresponding according to input signal
Signal type, determines the transmission path of input signal, since different types of input signal corresponds to the numeral of unlike signal type
Light beam, further during signal transmission is carried out according to transmission path, adds input signal according to weight coefficient vector
Power summation, forms the corresponding digital light beam of unlike signal type, inhomogeneity can be flexibly generated for the increase of different type input signal
The characteristic of type numeral light beam.The digital beam froming method phase of single mode digital beam is only possible to produce with system in the prior art
Than the embodiment of the present invention makes full use of system resource, and can be stored or be generated with flexible configuration can dynamic memory unlike signal type
Weight coefficient vector, and the transmission path of definite unlike signal type, after the corresponding signal type of input signal is got,
According to not by signal type, being neatly that unlike signal selects different transmission paths and the required power system of weighted sum
Number vector, it is possible to achieve the corresponding digital beam of unlike signal type, it is easy to operate, without setting multiple and different letters in systems
Number type corresponds to the standalone module of digital beam, cost-effective, enhances the expandability of system.
Fig. 2 is the flowchart 2 of digital beam froming method according to embodiments of the present invention, as shown in Fig. 2, the flow bag
Include following steps：
Step S201, is pre-configured with the corresponding number of channels of input signal；
Signalling channel is to receive the core of signal, is mainly used for transmitting input signal, due to unlike signal type
Input signal active channel bandwidth is different, in order to ensure the stability and transmission rate in input signal transmitting procedure,
Required number of channels is different.
For example, input signal includes 1.5MHz, 4MHz, 9MHz for bandwidth, then needing to configure can accordingly be believed by inputting
Number passage, that is, the passage lowest-bandwidth that allows to pass through needs to be less than 1.5MHz, and the highest bandwidth of passage needs to be higher than
9MHz, usually sets and is no less than 3 numbers of channels, can specifically set the passage of same band, can also configure different bandwidth
Passage, the embodiment of the present invention without limiting, specifically can flexibly match somebody with somebody the quantity of passage according to input signal bandwidth
Put.
For the embodiment of the present invention, and the corresponding number of channels of on-fixed input signal, but it is pre-configured with input signal
Corresponding number of channels, different numbers of channels are configured with different signal cache way, and input signal flexibly can be delayed
Processing is deposited, improves system to the adaptability of complex environment and the scalability of system.
Step S202, obtains the corresponding signal type of input signal；
For the embodiment of the present invention, the corresponding signal type of input signal can correspond to signal source according to input signal not
With obtaining, the difference of digital beam can also be generated according to required for input signal to obtain, such as can be according to input signal
Corresponding bandwidth divides input signals into broadband signal, narrow band signal and multiple beam signal, the embodiment of the present invention without
Limit.
It should be noted that since bandwidth in different application fields has different definition of accuracy, for example, it is a certain should
It is probably narrow band signal with field, and may is broadband signal in another field, the present invention is not to narrow band signal and broadband signal
Standard be defined, determined with specific reference to system actual demand.
Step S203, according to the signal type, configures the required weight coefficient vector of input signal weighted sum；
It is required according to the signal type of input signal, configuration input signal weighted sum for the embodiment of the present invention
Weight coefficient vector can specifically find out the weight coefficient vector for forming digital beam with signal type and matching from database, this
In database in be previously stored with to form the corresponding weight coefficient vector of different digital wave beam, as narrow band signal formed narrow-band digital
Weight coefficient vector or broadband signal corresponding to wave beam form the weight coefficient vector corresponding to broadband digital beam；Certainly can be with
The weight coefficient to be matched according to the signal type of the signal type dynamic generation of input signal and input signal formation digital beam
Vector, the embodiment of the present invention is to the mode of specific generation weight coefficient vector without limiting.
The embodiment of the present invention can be the different types of required weight coefficient of input signal flexible configuration weighted sum to
Amount, while storage forms multigroup weight coefficient vector of digital beam, can when needing to be formed the digital beam of unlike signal type
To export specific weight coefficient vector by rule according to corresponding signal type, in order to form the digital wave of unlike signal type
Beam.
Step S204, according to the signal type, determines the input signal in signal processing needed for transmitting procedure
Mode；
Since the corresponding signal characteristic of the input signal of unlike signal type is different, the frequency content included such as signal
Difference, required digital beam to be formed is different, with specific reference to unlike signal type, determines what signal needed in transmitting procedure
Signal processing mode, so as to select suitable signal processing mode to the input signal of unlike signal type.Here at signal
Reason mode can include but is not limited to caching, piecemeal or DFT/IDFT processing of input signal etc., can specifically pass through
The hardware modules such as FIFO, FFT arithmetic unit, IFFT arithmetic units are realized.
For the embodiment of the present invention, according to different signal types, determine that varying input signal is required in transmitting procedure
Signal processing mode, not directed to the intrinsic signal processing mode of single signal type, it is possible to achieve unlike signal type is defeated
Enter the flexible configuration of signal processing mode.
Step S205, according to the signal processing mode, determines the transmission path of the input signal；
For the signal processing mode of different signal type input signals, required transmission path is different, this
Inventive embodiments according to different signal processing modes, can determine the transmission path of input signal, for example, for frequency content
Less narrow band signal need not then carry out excessive Signal Pretreatment, then input signal can be avoided signal processing by transmission path
Module, then needs to carry out Signal Pretreatment, then transmission path needs input signal to pass through for the more broadband signal of frequency content
Signal processing module is crossed, is handled certainly if necessary to multiple signal, it is necessary to set input signal in a transmission path by multiple
Signal processing module, the embodiment of the present invention is without limiting.
Step S206, caching is grouped according to the signal cache way to the input signal；
Since transmission speed of the input signal outside passage is different from the transmission speed in passage, pin of the embodiment of the present invention
Different signal cache way is configured to the input signal of different numbers of channels, further input is believed according to signal cache way
Number caching is grouped, to ensure stability that subsequent input signals transmit in the channel.
It should be noted that caching can be the FIFO memory inside fpga chip, FIFO memory is a kind of use
The memory of the first in first out of annular storage organization.Caching is grouped input signal by FIFO memory, is set dynamically
The caching depth of input signal, plays the function that input signal is kept in, and follow-up signal process flow can be made smooth.
Step S207, controls the selecting switch state in the transmission path, according to control according to the transmission path
Selecting switch state carries out signal transmission；
Different transmission paths is needed by different modules, or avoids different modules, and the embodiment of the present invention is specific
Can by the selecting switch state in multiple selector controlling transmission path so that control input signal according to transmission path into
Row transmission.
For the embodiment of the present invention, multiple selector can be in input signal transmitting procedure, and control is different as needed
On off state in transmission path, in advance can set different types of input signal the corresponding on off state of transmission path
Table, and then multiple selector is controlled according on off state on off state table in real time, occur abnormal shape certainly in transmitting procedure
During state, on off state table can also be adjusted, in order to accurately control multiple selector.
Step S208, during signal transmission is carried out according to the transmission path, according to the weight coefficient vector tune
The sense of input signal in whole multiple passages；
For the embodiment of the present invention, summation is weighted to the input signal of each passage by weight coefficient vector to adjust
The sense of the input signal of each passage so that sense is assembled in one direction after being weighted summation.
It should be noted that the weight coefficient vector in the embodiment of the present invention can be the unlike signal type previously generated
Multigroup weight coefficient vector, also can also be the weight coefficient vector with a certain feature according to signal type dynamic generation, of the invention
Embodiment is without limiting.
Step S209, the input signal after adjustment sense is overlapped, forms the corresponding number of the signal type
Word wave beam.
For the embodiment of the present invention, the corresponding digital wave of signal type can be gathered in by adjusting the input signal after sense
Input signal after adjustment sense, is further overlapped by Shu Shang, forms the corresponding digital beam of signal type.
The embodiment of the present invention forms unlike signal by the weight coefficient vector of flexible configuration unlike signal type input signal
Type corresponds to digital beam so that system need not set the digital beam module of multiple and different signal types, shorten digital beam
The construction cycle of formation, saves resource occupation.
Another digital beam froming method of the embodiment of the present invention, according to the corresponding signal type of input signal, for not
Input signal with signal type configures the different required weight coefficient vectors of weighted sum, according to the corresponding letter of input signal
Number type, determines the transmission path of input signal, since different types of input signal corresponds to the digital light of unlike signal type
Beam, further during signal transmission is carried out according to transmission path, is weighted input signal according to weight coefficient vector
Summation, forms the corresponding digital light beam of unlike signal type, different type can be flexibly generated for the increase of different type input signal
The characteristic of digital light beam.The digital beam froming method phase of single mode digital beam is only possible to produce with system in the prior art
Than the embodiment of the present invention makes full use of system resource, and can be stored or be generated with flexible configuration can dynamic memory unlike signal type
Weight coefficient vector, and the transmission path of definite unlike signal type, after the corresponding signal type of input signal is got,
According to not by signal type, being neatly that unlike signal selects different transmission paths and the required power system of weighted sum
Number vector, it is possible to achieve the corresponding digital beam of unlike signal type, it is easy to operate, without setting multiple and different letters in systems
Number type corresponds to the standalone module of digital beam, cost-effective, enhances the expandability of system.
Fig. 3 is the structure diagram one of digital beam froming device according to embodiments of the present invention, as shown in figure 3, the device
Including：
Acquiring unit 31, can be used for obtaining the corresponding signal type of input signal；
First dispensing unit 32, can be used for according to the signal type, configure needed for the input signal weighted sum
The weight coefficient vector wanted；
Determination unit 33, can be used for the transmission path for according to the signal type, determining the input signal；
Generation unit 34, can be used for during signal transmission is carried out according to the transmission path, according to the power
Coefficient vector is weighted summation to the input signal, forms the corresponding digital beam of the signal type.
A kind of digital beam froming device provided in an embodiment of the present invention, according to the corresponding signal type of input signal, is
The input signal of unlike signal type configures the different required weight coefficient vectors of weighted sum, corresponding according to input signal
Signal type, determines the transmission path of input signal, since different types of input signal corresponds to the numeral of unlike signal type
Light beam, further during signal transmission is carried out according to transmission path, adds input signal according to weight coefficient vector
Power summation, forms the corresponding digital light beam of unlike signal type, inhomogeneity can be flexibly generated for the increase of different type input signal
The characteristic of type numeral light beam.The digital beam froming method phase of single mode digital beam is only possible to produce with system in the prior art
Than the embodiment of the present invention makes full use of system resource, and can be stored or be generated with flexible configuration can dynamic memory unlike signal type
Weight coefficient vector, and the transmission path of definite unlike signal type, after the corresponding signal type of input signal is got,
According to not by signal type, being neatly that unlike signal selects different transmission paths and the required power system of weighted sum
Number vector, it is possible to achieve the corresponding digital beam of unlike signal type, it is easy to operate, without setting multiple and different letters in systems
Number type corresponds to the standalone module of digital beam, cost-effective, enhances the expandability of system.
As the further explanation of digital beam froming device shown in Fig. 3, Fig. 4 is numeral according to embodiments of the present invention
The structure diagram two of beam-forming device, as shown in figure 4, the device further includes：
Control unit 35, can be used for described during signal transmission is carried out according to the transmission path, according to
The weight coefficient vector is weighted summation to the input signal, is formed before the corresponding digital beam of the signal type,
Selecting switch state in the transmission path is controlled according to the transmission path, letter is carried out according to the selecting switch state of control
Number transmission；
Second dispensing unit 36, can be used for before the corresponding signal type of the acquisition input signal, is pre-configured with
The corresponding number of channels of input signal, the difference number of channels are configured with different signal cache way；
Buffer unit 37, can be used for the transmission path for determining the input signal according to the signal type described
Afterwards, caching is grouped to the input signal according to the signal cache way.
Further, first dispensing unit 32, specifically can be used for finding out from database and the class signal
Type forms the weight coefficient vector that matches of digital beam, is previously stored with that to form different digital wave beam corresponding in the database
Weight coefficient vector；Or
The weight coefficient vector to be matched according to the signal type dynamic generation and signal type formation digital beam.
Further, the determination unit 33 includes：
First determining module 331, can be used for according to the signal type, determine the input signal in transmitting procedure
Required signal processing mode；
Second determining module 332, can be used for the transmission road for according to the signal processing mode, determining the input signal
Footpath.
Further, the input signal is the signal of multiple passages, and the generation unit 34 includes：
Module 341 is adjusted, can be used for the signal side that input signal in multiple passages is adjusted according to the weight coefficient vector
To；
Generation module 342, can be used for the input signal after adjustment sense being overlapped, forms the class signal
The corresponding digital beam of type.
Further, the generation unit 34 further includes：
Receiving module 343, can be used for the weighted sum signal for receiving feedback, is repeated according to the weight coefficient vector to institute
State input signal and the weighted sum signal for receiving feedback is weighted summation.
Another kind digital beam froming device provided in an embodiment of the present invention, according to the corresponding signal type of input signal,
The different required weight coefficient vectors of weighted sum is configured for the input signal of unlike signal type, is corresponded to according to input signal
Signal type, the transmission path of input signal is determined, since different types of input signal corresponds to the number of unlike signal type
Word light beam, further during signal transmission is carried out according to transmission path, carries out input signal according to weight coefficient vector
Weighted sum, forms the corresponding digital light beam of unlike signal type, difference can be flexibly generated for the increase of different type input signal
The characteristic of type numeral light beam.The digital beam froming method of single mode digital beam is only possible to produce with system in the prior art
Compare, the embodiment of the present invention makes full use of system resource, and can be stored or be generated with flexible configuration can dynamic memory unlike signal class
The weight coefficient vector of type, and the transmission path of definite unlike signal type, are getting the corresponding signal type of input signal
Afterwards, according to not by signal type, neatly select different transmission paths and weighted sum required for unlike signal
Weight coefficient vector, it is possible to achieve the corresponding digital beam of unlike signal type, it is easy to operate, without set in systems it is multiple not
The standalone module of digital beam is corresponded to signal type, it is cost-effective, enhance the expandability of system.
Fig. 5 is the structure diagram three of digital beam froming device according to embodiments of the present invention, as shown in figure 5, the device
Including：Input signal pretreatment unit 41, control unit 42, weight coefficient vector generation unit 43, weighted sum unit 44, output
Signal processing unit 45；
Wherein, input signal pretreatment unit 41 can be used for carrying out data prediction to input signal；
Need exist for explanation be not that all input signals are required to data prediction, for be not required data it is pre-
The input signal of processing can be controlled by control unit 42 and be directly transferred to weighted sum unit 44.
Control unit 42 can be used for transmission path and the middle age of weight coefficient vector generation unit 43 of control input signal
The configuration and generation of full powers coefficient vector, while to needing the output signal control that feedback weight is summed to export the feedback road of signal
Footpath；
It should be noted that for during the digital light beam of unlike signal type is formed, output signal is sometimes
Be not to be formed it is final digital light beam as a result, but need the weighted sum by exporting signal and input signal, and then
Form final digital light beam；
Weight coefficient vector generation unit 43 can be used for weight coefficient is generated and stored according to unlike signal type packet color
Vector；
Weighted sum unit 44 can be used for according to the weight coefficient vector that weight coefficient vector generation unit 43 stores to input
Signal is weighted summation；
Output signal processing unit 45 can be used for carrying out data prediction to output signal.
For the embodiment of the present invention, the control flow chart of the digital beam of unlike signal type is formed as shown in fig. 6, specific
Control process is as described below：In system reset or after the power is turned on, the signal type of input signal is selected, completes the choosing of signal type
After selecting, system initialization carries out Signal Pretreatment to input signal, and read group total is weighted to input signal, adjustment input
The direction of signal, and signal results processing is carried out to signal after adjustment so that input signal gathers to form desired signal type
Digital beam on, it is necessary to explanation, formed desired signal type digital beam during, weighted sum calculate may
The feedback of weighted sum result is needed to adjust weight coefficient vector, by the way that the signal of signal results processing output is fed back to signal
Calculated with re-starting weighted sum in processing with input signal, be further ensured that to form the accuracy of digital beam.
It should be noted that specifically during the digital beam of unlike signal type is formed, narrow band signal needs not move through
Data prediction, is directly entered weighted sum module, and narrow-band beam as shown in Figure 7 forms schematic diagram, then controlling switch is closed
Narrow band signal is connected with data prediction, that is, skips data prediction, and controlling switch opens narrow band signal and weighted sum
The connection of module, broadband signal need, by data prediction twice, to enter weighted sum module, broadband as shown in Figure 8 afterwards
Wave beam forming schematic diagram, then controlling switch is opened broadband signal and is connected with data prediction, that is, locates in advance by data twice
The connection of reason, afterwards controlling switch unlatching broadband signal and weighted sum module, multibeam signals, which need to open, passes through a number
Data preprocess, rear to enter weighted sum module, Multibeam synthesis schematic diagram as shown in Figure 9, then controlling switch unlatching multi-beam
Signal is connected with data prediction, that is, by each data prediction, skips a data prediction, control afterwards is opened
Close and open multibeam signals and the connection of weighted sum module.
Obviously, those skilled in the art should be understood that above-mentioned each module of the invention or each step can be with general
Computing device realize that they can be concentrated on single computing device, or be distributed in multiple computing devices and formed
Network on, alternatively, they can be realized with the program code that computing device can perform, it is thus possible to which they are stored
Performed in the storage device by computing device, and in some cases, can be with different from shown in order execution herein
The step of going out or describing, they are either fabricated to each integrated circuit modules respectively or by multiple modules in them or
Step is fabricated to single integrated circuit module to realize.Combined in this way, the present invention is not restricted to any specific hardware and software.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the invention, for the skill of this area
For art personnel, the invention may be variously modified and varied.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should all be included within protection scope of the present invention.
Claims (10)
- A kind of 1. digital beam froming method, it is characterised in that including：Obtain the corresponding signal type of input signal；According to the signal type, the required weight coefficient vector of input signal weighted sum is configured；According to the signal type, the transmission path of the input signal is determined；According to the transmission path carry out signal transmission during, according to the weight coefficient vector to the input signal into Row weighted sum, forms the corresponding digital beam of the signal type.
- It is 2. according to the method described in claim 1, it is characterized in that, described according to the signal type, the configuration input letter Number required weight coefficient vector of weighted sum includes：Found out from database and form the weight coefficient vector that matches of digital beam with the signal type, in the database It is previously stored with to form the corresponding weight coefficient vector of different digital wave beam；OrThe weight coefficient vector to be matched according to the signal type dynamic generation and signal type formation digital beam.
- 3. according to the method described in claim 1, it is characterized in that, described according to the signal type, the input letter is determined Number transmission path include：According to the signal type, determine the input signal in signal processing mode needed for transmitting procedure；According to the signal processing mode, the transmission path of the input signal is determined.
- 4. according to the method described in claim 3, it is characterized in that, signal transmission is being carried out according to the transmission path described During, summation is weighted to the input signal according to the weight coefficient vector, it is corresponding to form the signal type Before digital beam, the method further includes：Selecting switch state in the transmission path is controlled according to the transmission path, according to the selecting switch state of control into Row signal transmission.
- 5. according to the method described in claim 1, it is characterized in that, the input signal be multiple passages signal, described Summation is weighted to the input signal according to the weight coefficient vector, forms the corresponding digital beam bag of the signal type Include：The sense of input signal in multiple passages is adjusted according to the weight coefficient vector；Input signal after adjustment sense is overlapped, forms the corresponding digital beam of the signal type.
- 6. according to the method described in claim 5, it is characterized in that, the corresponding signal type of the acquisition input signal it Before, the method further includes：The corresponding number of channels of input signal is pre-configured with, the difference number of channels is configured with different signal cache way；Described according to the signal type, after the transmission path for determining the input signal, the method further includes：Caching is grouped to the input signal according to the signal cache way.
- 7. according to the method any one of claim 1-6, it is characterised in that it is described according to the weight coefficient vector to institute State input signal and be weighted summation, form the corresponding digital beam of the signal type and further include：The weighted sum signal of feedback is received, is repeated according to the weight coefficient vector anti-to the input signal and the reception The weighted sum signal of feedback is weighted summation.
- A kind of 8. digital beam froming device, it is characterised in that including：Acquiring unit, for obtaining the corresponding signal type of input signal；First dispensing unit, for according to the signal type, configuring the required weight coefficient of input signal weighted sum Vector；Determination unit, for according to the signal type, determining the transmission path of the input signal；Generation unit, for according to the transmission path carry out signal transmission during, according to the weight coefficient vector pair The input signal is weighted summation, forms the corresponding digital beam of the signal type.
- 9. device according to claim 8, it is characterised in thatFirst dispensing unit, matches specifically for being found out from database with signal type formation digital beam Weight coefficient vector, be previously stored with to form the corresponding weight coefficient vector of different digital wave beam in the database；OrThe weight coefficient vector to be matched according to the signal type dynamic generation and signal type formation digital beam.
- 10. device according to claim 8, it is characterised in that the input signal be multiple passages signal, the life Include into unit：Module is adjusted, for adjusting the sense of input signal in multiple passages according to the weight coefficient vector；Generation module, for the input signal after adjustment sense to be overlapped, forms the corresponding number of the signal type Word wave beam.
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