CN113973040B - Multi-antenna signal processing method and device, electronic equipment and storage medium - Google Patents
Multi-antenna signal processing method and device, electronic equipment and storage medium Download PDFInfo
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Abstract
The invention provides a multi-antenna signal processing method and device, electronic equipment and a storage medium, and relates to the technical field of communication. The method comprises the following steps: acquiring an interleaved signal, wherein the interleaved signal is obtained by interleaving a plurality of antenna signals, and the first frequencies of the plurality of antenna signals are consistent; determining at least one over-limit peak point of the interleaved signal according to a preset threshold, wherein the over-limit peak point corresponds to an antenna; generating a pulse signal of a second frequency according to a preset sequence of the antenna and phase information of an overrun peak point corresponding to the antenna, wherein the second frequency is a multiple of the first frequency; and carrying out peak clipping processing on the interleaved signal according to the pulse signal. The invention can carry out peak clipping processing on the obtained interleaved signal under the condition of not splitting the interleaved signal, and only one CFR module is needed because the interleaved signal is input, thereby reducing the resource occupancy rate and improving the processing efficiency.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for processing a multi-antenna signal, an electronic device, and a storage medium.
Background
The Massive Multiple Input Multiple Output (Massive MIMO, massive Multiple Input Multiple Output-Output) technology is one of the core technologies of fifth Generation mobile communication (5g, 5th Generation), and the Massive MIMO uses multi-antenna space division multiplexing to improve the spectrum efficiency and enhance the network coverage and the system capacity in a multiplied manner. The number of antennas used by Massive MIMO exceeds 100, which is an order of magnitude higher than that of the conventional base station, so that more independent data streams can be transmitted between the system and the terminal, thereby improving the spectrum efficiency and the energy efficiency by times. The increase in the number of antennas directly leads to differences in signal processing methods, causing new problems and challenges. In Massive MIMO systems, a major problem is that signals have a relatively high Peak-to-Average Power Ratio (PAPR), and in order to transmit these signals with high PAPR without distortion, linearity requirements on some components, such as a Power amplifier, are high, and if the variation range of the signals exceeds the linear range of the device, significant in-band distortion and out-of-band radiation are generated, thereby resulting in an increase in error rate. How to effectively reduce the peak-to-average power ratio of a Massive MIMO system will directly relate to the performance and implementation cost of the Massive MIMO system.
In the prior art, the peak-to-average power ratio of a Massive MIMO system is reduced by performing peak clipping processing on a signal. However, in the prior art, peak clipping processing is implemented through a Channel Frequency Response (CFR) module, a signal of each antenna is independently processed through one CFR module, if peak clipping processing is to be performed on an interleaved signal, the interleaved signal needs to be split into signals corresponding to a plurality of antennas first, and then the signals corresponding to the plurality of antennas can be respectively subjected to peak clipping processing by using the plurality of CFR modules, which results in a large resource occupancy rate; or, one CFR module may be further used to perform peak clipping processing on signals corresponding to multiple antennas in sequence, which may require a long processing time and result in low processing efficiency.
Disclosure of Invention
The invention provides a multi-antenna signal processing method, a multi-antenna signal processing device, electronic equipment and a storage medium, and aims to solve the problems that in the prior art, the resource occupancy rate is high and the processing efficiency is low when the multi-antenna signal is subjected to peak clipping.
According to a first aspect of the present invention, there is provided a multi-antenna signal processing method, the method comprising:
acquiring an interleaved signal, wherein the interleaved signal is obtained by interleaving a plurality of antenna signals, and the first frequencies of the plurality of antenna signals are consistent;
determining at least one over-limit peak point of the interleaved signal according to a preset threshold, wherein the over-limit peak point corresponds to an antenna;
generating a pulse signal of a second frequency according to a preset sequence of the antenna and phase information of an overrun peak point corresponding to the antenna, wherein the second frequency is a multiple of the first frequency;
and carrying out peak clipping processing on the interweaved signal according to the pulse signal.
According to a second aspect of the present invention, there is provided a multi-antenna signal processing apparatus, the apparatus comprising:
the device comprises an interleaved signal acquisition module, a frequency matching module and a frequency matching module, wherein the interleaved signal acquisition module is used for acquiring an interleaved signal, the interleaved signal is obtained by interleaving a plurality of antenna signals, and the first frequencies of the plurality of antenna signals are consistent;
an overrun peak point determining module, configured to determine at least one overrun peak point of the interleaved signal according to a preset threshold, where the overrun peak point corresponds to an antenna;
the pulse signal generating module is used for generating a pulse signal of a second frequency according to the preset sequence of the antenna and the phase information of the over-limit peak point corresponding to the antenna, wherein the second frequency is a multiple of the first frequency;
and the peak clipping processing module is used for carrying out peak clipping processing on the interweaved signal according to the pulse signal.
According to a third aspect of the present invention, there is provided an electronic apparatus comprising:
a processor, a memory and a computer program stored on the memory and executable on the processor, the processor implementing the aforementioned method when executing the program.
According to a fourth aspect of the invention, there is provided a readable storage medium having instructions that, when executed by a processor of an electronic device, enable the electronic device to perform the aforementioned method.
The invention provides a multi-antenna signal processing method, a multi-antenna signal processing device, electronic equipment and a storage medium, wherein the method comprises the following steps: acquiring an interleaved signal, wherein the interleaved signal is obtained by interleaving a plurality of antenna signals, and the first frequencies of the plurality of antenna signals are consistent; determining at least one over-limit peak point of the interleaved signal according to a preset threshold, wherein the over-limit peak point corresponds to an antenna; generating a pulse signal of a second frequency according to a preset sequence of the antenna and phase information of an overrun peak point corresponding to the antenna, wherein the second frequency is a multiple of the first frequency; and carrying out peak clipping processing on the interleaved signal according to the pulse signal. The invention can carry out peak clipping processing on the obtained interleaved signal under the condition of not splitting the interleaved signal, and only one CFR module is needed because the interleaved signal is input, thereby reducing the resource occupancy rate and improving the processing efficiency.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.
Fig. 1 is a flowchart illustrating specific steps of a multi-antenna signal processing method according to an embodiment of the present invention;
FIG. 2 is a block diagram of a CFR module implementation in the prior art;
FIG. 3 is a schematic diagram of input signals of a CFR module in the prior art;
fig. 4 is a structural diagram of a CFR module implementation according to an embodiment of the present invention;
fig. 5 is a flowchart illustrating specific steps of a multi-antenna signal processing method according to a second embodiment of the present invention;
fig. 6 is a schematic diagram of input signals of a CFR module according to an embodiment of the invention;
fig. 7 is a schematic diagram of an input signal of a peak clipping pulse generating module according to a second embodiment of the present invention;
FIG. 8 is a flowchart of the operation of a peak clipping pulse generation module of the prior art;
fig. 9 is a flowchart of a peak clipping pulse generating module according to a second embodiment of the present invention;
fig. 10 is a schematic diagram of a generated pulse signal according to a second embodiment of the present invention;
fig. 11 is a schematic diagram of a combined pulse signal according to a second embodiment of the present invention;
fig. 12 is a schematic diagram of an output signal of a CFR module according to a second embodiment of the present invention;
fig. 13 is a structural diagram of a multi-antenna signal processing apparatus according to a third embodiment of the present invention;
fig. 14 is a structural diagram of a multi-antenna signal processing apparatus according to a fourth embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1, a flowchart illustrating specific steps of a multi-antenna signal processing method according to an embodiment of the present invention is shown.
The interleaved signal is obtained by interleaving a plurality of antenna signals, and the first frequencies of the plurality of antenna signals are consistent.
In wireless communication, a transmitted digital signal may generate burst errors due to various reasons, which affects communication performance, and in order to correct the burst errors in digital signal transmission, an interleaving encoding technique is usually used to interleave the digital signal, so as to disperse longer burst errors in the digital signal into random errors, and further correct the random errors. Interleaving the digital signal is performed by changing the order of bits or bytes before encoding the digital signal so that burst errors at the receiver end can be located in different packets and can be corrected by the code.
In the invention, the antenna signals with the same frequency in a plurality of antenna signals in the Massive MIMO system are interleaved, namely the antenna signals with the same first frequency in the plurality of antenna signals are interleaved.
The first frequency in the embodiment of the present invention is a signal frequency of the interleaved signal, and the second frequency is a frequency of generating the pulse signal, and the second frequency is generally a clock frequency. The second frequency is a multiple of the first frequency.
The preset threshold represents the maximum amplitude value of the signal after the peak clipping processing, the value of the preset threshold is related to the variation range of the signal amplitude value supported by the signal transmission device, and a corresponding value can be set according to actual requirements, which is not specifically limited in the present invention.
In combination with the foregoing, the interleaved signal in the embodiment of the present invention includes multiple antenna signals with the same frequency, and a maximum point of each antenna signal in the interleaved signal is determined, that is, a peak point of the interleaved signal, where, among all peak points of the interleaved signal, a peak point whose amplitude value exceeds the preset threshold is an over-limit peak point. Since the peak point of the interleaved signal is determined according to the maximum point of each antenna in the interleaved signal, in the embodiment of the present invention, the over-limit peak point of the interleaved signal includes the over-limit peak point of at least one antenna in the interleaved signal.
And 103, generating a pulse signal of a second frequency according to the preset sequence of the antennas and the phase information of the over-limit peak point corresponding to the antennas, wherein the second frequency is a multiple of the first frequency.
The first frequency in the embodiment of the present invention is a signal frequency of the interleaved signal, and the second frequency is a frequency at which the pulse signal is generated. The second frequency has a multiple relationship with the first frequency, for example, if the first frequency is a, the second frequency is n × a, where n is a positive integer. Thus, in practical applications, several times the first frequency needs to be determined as the second frequency before generating the pulse signal.
And 104, performing peak clipping processing on the interleaved signal according to the pulse signal.
In the prior art, a Channel Frequency Response (CFR) module is usually used to perform Peak clipping processing on a Signal, and referring to fig. 2, an implementation structure of a CFR module in the prior art is shown, a Signal _ in that needs to be subjected to Peak clipping processing is synchronously input to a Data delay module (Data _ in _ delay) and a Peak value calculation module (Fa _ mag _ compute), the Fa _ mag _ compute calculates an amplitude value of a Peak value point of an input Signal, then the calculated amplitude value of the Peak value point is respectively input to a Peak scaling module (Peak _ scale) and a Peak value detection module (Peak _ detect), wherein the Peak _ scale scales the amplitude value of the Signal by using the amplitude value of the Signal and a preset threshold, the Peak _ detect scales the amplitude value of the Signal, the Peak _ detect performs scaling processing on the amplitude value exceeding a preset overrun Peak value point and phase information of the overrun Peak value point, and the Peak scaling processing module outputs Peak value delay information corresponding to the Peak delay point (Peak _ delay _ point) and the overrun Peak _ detect information. The Peak clipping pulse generating module (C _ pulses) generates a Peak clipping pulse signal according to the amplitude value output by the Peak _ scale _ delay and the phase information of the over-limit Peak point output by the Peak _ align, and then inputs the Peak clipping pulse signal and the signal subjected to delay processing by the Data _ in _ delay into the subtracting module (Subtract) synchronously so as to obtain a signal subjected to Peak clipping processing. The phase information of each over-limit peak point in the peak clipping pulse signal is the same as the phase information of each corresponding over-limit peak point in the signal subjected to the time delay processing through the Data _ in _ delay.
Referring to fig. 3, a schematic diagram of input signals of a CFR module in the prior art is shown, where Clock is a Clock signal, clk _ ce is a shift register signal, data _ ant0 is a signal of an antenna ant0, data _ ant1 is a signal of an antenna ant1, data _ ant2 is a signal of an antenna ant2, data _ ant3 is a signal of an antenna ant3, and frequencies of the signals of the antenna ant0, the antenna ant1, the antenna ant2, and the antenna ant3 are consistent. If the peak clipping processing is to be performed on the 4 antenna signals in fig. 3, or a plurality of CFR modules shown in fig. 2 are adopted, one antenna Signal is used as an input Signal _ in of one CFR module, and the peak clipping processing is performed on each antenna Signal; or each antenna Signal is sequentially input into the CFR module shown in fig. 2 as a single input Signal _ in, and the peak clipping processing is performed on the plurality of antenna signals by one CFR module.
As can be seen from the above, in the prior art, one antenna signal is processed separately by one CFR module, and if a peak clipping signal of an interleaved signal is to be obtained, the interleaved signal needs to be split into signals corresponding to multiple antennas first, and then after each antenna signal is subjected to peak clipping separately, the peak clipping processed signals of the antennas are interleaved to obtain the peak clipping processed signal of the interleaved signal. In the process, either a plurality of CFR modules are needed, so that the resource occupancy rate is large; or, a CFR module performs peak clipping processing on signals corresponding to multiple antennas successively, which requires a long processing time and results in low processing efficiency.
Therefore, in order to solve the problems of large resource occupancy rate and low processing efficiency in the prior art of carrying out peak clipping processing on signals of multiple antennas, the invention carries out peak clipping processing on the obtained interleaved signals under the condition of not splitting the interleaved signals, and only one CFR module is needed because the input is one interleaved signal, thereby reducing the resource occupancy rate and improving the processing efficiency.
Referring to fig. 4, an example of interleaving two antenna signals to obtain an interleaved signal is shown, which illustrates an implementation structure diagram of a CFR module provided in the embodiment of the present invention. The input Signal _ in fig. 4 is an interleaved Signal, and includes two antenna signals with the first frequency. And calculating the amplitude value of the peak point of the interleaved signal through the Fa _ mag _ computer to obtain the amplitude value of each peak point in the interleaved signal. In the invention, the interleaved signal comprises two antenna signals, the overrun peak points of the two antenna signals may be uniformly distributed, and in a certain signal period, only one antenna signal may have the overrun peak point, if the signal is subjected to peak clipping according to a CFR (computational fluid dynamics) module in the prior art, one overrun peak point is read according to a clock frequency to generate a pulse signal, pulses generated by the overrun peak point corresponding to each antenna in the finally generated peak clipping pulse signal do not appear according to the preset sequence of the antenna, when the interleaved signal is subjected to peak clipping according to the peak clipping pulse signal, the phase information of the overrun peak point in the peak clipping pulse signal is inconsistent with the phase information of the overrun peak point corresponding to the interleaved signal, and errors occur in the finally obtained peak-clipped pulse signal. Therefore, when the Peak clipping pulse generating module (C _ pulses) generates a pulse signal according to the amplitude value output by the Peak _ scale _ delay and the phase information of the over-limit Peak point, it needs to acquire the phase information of the corresponding over-limit Peak point according to the preset sequence of the antennas. Therefore, in a CFR module provided in the embodiment of the present invention shown in fig. 4, peak _ detect and Peak _ align in the CFR module shown in fig. 2 are respectively exemplified as Peak _ detect _ ant0, peak _ detect _ ant1, and Peak _ align _ ant0, and Peak _ align _ ant1, so that phase information of an overrun Peak point in an interleaved signal is sequentially obtained according to a preset sequence of antennas, and phase information of the overrun Peak point is adjusted, and a corresponding output is essentially generated according to an input, so that an overrun Peak point whose amplitude value exceeds a preset threshold in the interleaved signal and phase information corresponding to the overrun Peak point are actually determined through one Peak _ detect, and phase information of the overrun Peak point of the interleaved signal output by one Peak _ align is adjusted, thereby reducing an occupancy rate of a signal processing resource, and improving an occupancy rate of the signal processing efficiency.
As can be seen from fig. 4, in the embodiment of the present invention, the peak clipping pulse generating module (C _ pulses) outputs the interleaved peak clipping pulse signal, and the peak clipping is directly performed on the delayed interleaved signal output by Data _ in _ delay through a subtrect, so as to obtain the peak-clipped interleaved signal.
In the prior art, each signal is subjected to peak clipping processing separately, so that the output of C _ pulses is also a peak clipping pulse signal corresponding to a single signal, and finally the output of the CFR module is a signal after peak clipping corresponding to the single signal. If the signal after the peak clipping processing of the interleaved signal is to be obtained, the peak clipping processing needs to be performed on each antenna signal respectively, and then the signal after the peak clipping is interleaved, which needs to occupy a large amount of resources and has low processing efficiency.
In summary, the embodiments of the present invention provide a multi-antenna signal processing method, which can perform peak clipping on an acquired interleaved signal without splitting the interleaved signal, and only one CFR module is required because the input is an interleaved signal, so that the resource occupancy is reduced, and the processing efficiency is improved.
Example two
Referring to fig. 5, a flowchart illustrating specific steps of a multi-antenna signal processing method according to a second embodiment of the present invention is shown.
The first frequency in the embodiment of the present invention is a signal frequency of any one of the signal frequencies of the plurality of antennas.
The signal frequencies of the antennas in the interleaved signal are consistent and are the first frequency.
Referring to fig. 6, a schematic diagram of an input signal of a CFR module according to an embodiment of the present invention is shown, where Clock is a Clock frequency, that is, a second frequency in the present invention, a signal frequency of x2_ hd is consistent with signal frequencies of an antenna ant0, an antenna ant1, an antenna ant2, and an antenna ant3, and is a first frequency, x2_ hd is used to indicate a signal frequency of an antenna signal, data _ ant01 is an interleaved signal of the antenna ant0 and the antenna ant1, and data _ ant23 is an interleaved signal of the antenna ant2 and the antenna ant 3. In the embodiment of the present invention, the number of antenna signals included in the interleaved signal is related to the second frequency and the multiple of the first frequency, and in the input signal diagram shown in fig. 6, the second frequency is twice as high as the first frequency, so that the interleaved signal in fig. 6 includes two antenna signals. Of course, the antenna ant0 and the antenna ant2 may be interleaved, and the antenna ant1 and the antenna ant3 may be interleaved, which is not limited in the present invention, as long as the signal frequency of each antenna signal in the interleaved signal is the first frequency. In fig. 6, a in the data _ ant01 signal and the data _ ant23 signal represents an antenna corresponding to the signal, d represents a period of the signal, for example, a0d0 represents a first period of the antenna ant0, a1d0 represents a first period of the antenna ant1, and it can be seen that data of each antenna in the interleaved signal are sequentially arranged according to a preset sequence.
In the embodiment of the present invention, the maximum point of each antenna signal in the interleaved signal is determined, that is, the peak point of the interleaved signal.
Referring to fig. 6, two interleaved signals are included: data _ ant01 and data _ ant23, which are input into the CFR module shown in fig. 4 as Signal _ in when data _ ant01 is subjected to peak clipping processing, and the amplitude value of the peak point of the interleaved Signal data _ ant01 is calculated by Fa _ mag _ computer in fig. 4; similarly, when the data _ ant23 is subjected to peak clipping processing, it is input as Signal _ in into the CFR module shown in fig. 4, and the amplitude value of the peak point of the interleaved Signal data _ ant23 is calculated by Fa _ mag _ computer in fig. 4.
And 204, determining a peak point with the amplitude value larger than a preset threshold from the at least one peak point as an over-limit peak point.
The preset threshold represents the maximum amplitude value of the signal after the peak clipping processing, the value of the preset threshold is related to the variation range of the signal amplitude value supported by the signal transmission device, and a corresponding value can be set according to actual requirements, which is not specifically limited in the present invention. Among all peak points of the interleaved signal, the peak point of which the amplitude value exceeds the preset threshold is the overrun peak point.
This step can refer to step 102, which is not described herein.
And step 205, sequentially acquiring phase information of the over-limit peak points corresponding to the antennas according to a preset sequence of the antennas.
In the present invention, since the interleaved signal includes a plurality of antenna signals, the over-limit peak points of the plurality of antenna signals may be uniformly distributed, and in a certain signal period, there may be only one antenna signal having an over-limit peak point, in order to avoid an error in the peak clipping processing result, the phase information of each corresponding over-limit peak point in the interleaved signal in the peak clipping pulse signal should be kept consistent, so that it is necessary to sequentially obtain the phase information of the corresponding over-limit peak point according to the preset order of the antenna, and generate the corresponding pulse signal.
Optionally, the phase information of the over-limit peak point includes an antenna identifier, and the phase information of the over-limit peak point corresponding to the antenna is sequentially obtained according to a preset sequence of the antenna and the antenna identifier.
Referring to fig. 7, a schematic diagram of an input signal of a Peak clipping pulse generating module according to an embodiment of the present invention is shown, an interleaved signal of an antenna ant0 and an antenna ant1 enters a Peak detect _ ant0 and a Peak _ detect _ ant1 module shown in fig. 4, the module uses an ant _ sel signal to select data of a corresponding antenna for processing, peak detection is performed on the antenna ant0 and generates a corresponding Peak position indication signal when the ant _ sel is 0, peak detection is performed on the antenna ant1 and generates a corresponding Peak position indication signal when the ant _ sel is 1, and after the Peak position indication signals of the two antennas are adjusted by the Peak _ align _ ant0 and the Peak _ align _ ant1 in fig. 4, phase information Peak _ position _ ant0 of the over-limit Peak point of the antenna ant0 and phase information Peak _ position _ align _ ant1 of the over-limit Peak point of the antenna ant1 are obtained, so that the phase information of the antenna ant0 and the over-limit Peak point of the antenna are sequentially obtained, and the antenna phase information is accordingly the antenna phase information is preset according to the antenna phase information.
If the phase information of the over-limit peak point corresponding to the antenna does not exist, it is indicated that the over-limit peak point does not exist in the phase position of the antenna, and if the phase information of the over-limit peak point corresponding to the antenna does not exist, the phase information of the over-limit peak point corresponding to the next antenna is directly obtained according to the preset sequence of the antenna, the phase information of each over-limit peak point in the generated pulse signal is inconsistent with the phase information of the same corresponding over-limit peak point in the interleaved signal, so that the final peak clipping processing result is wrong.
And 208, generating a pulse signal of a second frequency according to the pulse amplitude corresponding to the phase information.
In the prior art, because only one antenna signal needs to be subjected to peak clipping processing, the peak clipping pulse generating module (C _ pulses) generates a corresponding pulse signal according to the second frequency as long as it acquires phase information of an over-limit peak point, and referring to fig. 8, a working flow chart of the peak clipping pulse generating module (C _ pulses) in the prior art is shown. Peak _ location is phase information of the Peak _ alignment adjusted overrun Peak point in fig. 2, and after receiving the Peak _ location, the Peak allocation module (Allocator) determines the idle state of each CPG in sequence according to the priority order of the Peak Clipping Pulse Generator (CPG), and in fig. 8, the priorities of CPG # 1 to CPG # 4 are sequentially decreased. Specifically, the method comprises the following steps: if the CPG with high priority is in a non-idle state, judging whether the CPG with low priority is idle, and if the CPG with low priority is idle, sending the Peak _ location to the CPG with low priority. In fig. 8, after receiving the Peak _ location, the Allocator preferentially determines whether the CPG # 1 is idle, and if yes, the Peak _ location is sent to the CPG # 1, and the CPG # 1 generates a pulse signal; if not, judging whether the CPG # 2 is idle, and so on.
Taking interleaving two antenna signals to obtain an interleaved signal as an example, referring to fig. 9, a working flow chart of a Peak clipping pulse generating module (C _ pulses) provided by the embodiment of the present invention is shown, and like Peak _ detect _ ant1 and Peak _ align _ ant1 in fig. 4, the present invention instantiates the allocators shown in fig. 8 as allocators _ ant0 and _ ant1 in fig. 9, and actually only one Allocator is needed to complete processing of the interleaved signal of antenna ant0 and antenna ant1.
In fig. 9, the Allocator _ ant0 receives phase information Peak _ allocation _ ant0 of the over-limit Peak point of ant0, the Allocator _ ant1 receives phase information Peak _ allocation _ ant1 of the over-limit Peak point of ant1, the multiplexer (Mux) sequentially obtains phase information of the corresponding over-limit Peak point from the Allocator _ ant0 and the Allocator _ ant1 according to the preset sequence of the antenna and the antenna identifier, and inputs the obtained phase information of the over-limit Peak point into the CPG. Different from the prior art, when the phase information of the over-limit peak point is distributed to each CPG, the embodiment of the present invention sequentially determines whether the CPG is processing the phase information of the over-limit peak point corresponding to the antenna according to the preset sequence of the antenna and the priority of the CPG, and if not, indicates that the CPG is idle relative to the antenna, and sends the over-limit peak point corresponding to the antenna to the CPG. Taking fig. 9 as an example, when Mux currently acquires Peak _ location _ ant0, it is determined preferentially whether CPG # 1 is processing Peak _ location _ ant0, if not, the currently acquired Peak _ location _ ant0 is allocated to CPG # 1, if yes, it is determined continuously whether CPG # 2 is processing Peak _ location _ ant0, if not, the currently acquired Peak _ location _ ant0 is allocated to CPG # 2, and so on. If the CPG # 1 is processing Peak _ location _ ant1 when the Mux acquires Peak _ location _ ant0, the acquired Peak _ location _ ant0 continues to be allocated to the CPG # 1. And the CPG generates a pulse signal of a second frequency according to the phase information of the overrun peak point distributed by the Mux and the pulse amplitude corresponding to the phase information.
Referring to fig. 10, a schematic diagram of a generated pulse signal according to an embodiment of the present invention is shown, in which the indication signals peak _ locator _ ant0 and peak _ locator _ ant1 corresponding to the phase information of the over-limit peak points of the two antennas in fig. 7 are respectively input into the corresponding peak allocation modules all _ ant0 and all _ ant1 in the C _ pulse module shown in fig. 9, the Mux allocates the phase information corresponding to the over-limit peak points to 4 CPGs according to the aforementioned allocation method, and generates the enable signal CPG _ trig _ ant0 of the antenna ant0 and the pulse signal cpdr _ addr _ ant0 corresponding to the phase information of the over-limit peak points, and the enable signal CPG _ trig _ ant1 of the antenna ant1 and the pulse signal cpdr _ addr _ ant1 corresponding to the phase information of the over-limit peak points. Referring to fig. 11, which shows a schematic diagram of a combined pulse signal according to an embodiment of the present invention, the Mux module in fig. 9 combines the CPG enable signals CPG _ trig _ ant0 and CPG _ trig _ ant1 of the two antennas into the two-antenna interleaved CPG enable signal cfr _ trig according to the ant _ sel signal, and combines the CPG _ addr _ ant0 and CPG _ addr _ ant1 into the two-antenna interleaved pulse signal cfr _ addr.
In combination with the foregoing, the finally generated pulse signal corresponds to the preset sequence of each antenna in the interleaved signal and the phase information of the corresponding over-limit peak point in the interleaved signal.
And 209, adjusting the amplitude value of the over-limit peak point according to the preset threshold to obtain the adjusted amplitude value of the over-limit peak point.
Referring to fig. 4, peak _ scale adjusts the amplitude value of the peak point of the interleaved signal output by Fa _ mag _ computer according to a preset threshold, to obtain the amplitude value of the adjusted over-limit peak point.
Optionally, the amplitude value of the over-limit peak point is subtracted from the preset threshold, so as to obtain the adjusted amplitude value of the over-limit peak point.
And step 210, outputting the adjusted amplitude values of the over-limit peak points in sequence according to the preset sequence of the antenna and the second frequency.
As can be seen from fig. 9, in the embodiment of the present invention, the multiplier multiplies the pulse signal generated by each CPG by the amplitude value of the corresponding over-limit peak point to obtain the peak clipping pulse signal, and in order to ensure that the amplitude value of the over-limit peak point input to the multiplier corresponds to the phase information of the over-limit peak point in the pulse signal generated by the CPG one to one, thereby avoiding an error in the peak clipping processing result, the embodiment of the present invention sequentially outputs the adjusted amplitude values of the over-limit peak point according to the preset sequence of the antenna and the second frequency.
In fig. 4, the Peak _ scale _ delay outputs the amplitude value of the adjusted over-limit Peak point, that is, the Peak _ scaling in fig. 9, in sequence according to the preset sequence of the antenna and the second frequency.
And step 211, generating a peak clipping pulse signal according to the pulse signal and the output amplitude value of the over-limit peak point.
Optionally, the peak clipping pulse signal is obtained by multiplying the pulse signal by the output amplitude value of the over-limit peak point.
The Peak clipping pulse signal can be obtained by generating an amplitude value signal exceeding the Peak limit point according to the enable signal cfr _ trig and the Peak _ scaling signal generated by each CPG in fig. 9, multiplying the amplitude value signal by the pulse signal generated by each CPG, and synthesizing the output signal of the multiplier, where the enable signal cfr _ trig generated by the CPG is shown in fig. 11, and the pulse signal is shown as cfr _ addr in fig. 11.
And step 212, performing peak clipping processing on the interleaved signal according to the peak clipping pulse signal.
As can be seen from fig. 9, in the embodiment of the present invention, the peak clipping pulse generating module (C _ pulses) outputs the interleaved peak clipping pulse signal, and the peak clipping processing is directly performed on the delayed interleaved signal output by Data _ in _ delay in fig. 4 through a subtrect, so as to obtain the peak-clipped interleaved signal.
Referring to fig. 12, which shows an output Signal schematic diagram of a CFR module according to an embodiment of the present invention, a peak clipping pulse Signal output by a peak clipping pulse generating module (C _ pulses) in fig. 4 is subtracted from a CFR _ x2_ hd Signal output by Data _ in _ delay to obtain interleaved signals CFR _ out _ a01 and CFR _ out _ a23 after peak clipping processing, where when an input Signal _ in of the CFR module in fig. 4 is an interleaved Signal Data _ ant01 of an antenna ant0 and an antenna ant1, an output Signal _ out after peak clipping processing is CFR _ out _ a01, and when an input Signal _ in of the CFR module in fig. 4 is an interleaved Signal Data _ ant23 of an antenna ant2 and an antenna ant3, an output Signal _ out after peak clipping processing is CFR _ out _ a23.
In summary, the embodiments of the present invention provide a multi-antenna signal processing method, which can perform peak clipping on an acquired interleaved signal without splitting the interleaved signal, and only one CFR module is required because the input is an interleaved signal, so that the resource occupancy is reduced, and the processing efficiency is improved.
EXAMPLE III
Referring to fig. 13, a structural diagram of a multi-antenna signal processing apparatus according to a third embodiment of the present invention is shown, which includes the following details:
an interleaved signal obtaining module 301, configured to obtain an interleaved signal, where the interleaved signal is obtained by interleaving a plurality of antenna signals, and first frequencies of the plurality of antenna signals are the same.
An overrun peak point determining module 302, configured to determine at least one overrun peak point of the interleaved signal according to a preset threshold, where the overrun peak point corresponds to an antenna.
The pulse signal generating module 303 is configured to generate a pulse signal with a second frequency according to a preset order of the antennas and phase information of an over-limit peak point corresponding to the antennas, where the second frequency is a multiple of the first frequency.
And a peak clipping module 304, configured to perform peak clipping on the interleaved signal according to the pulse signal.
In summary, the embodiments of the present invention provide a multi-antenna signal processing apparatus, which can perform peak clipping on an acquired interleaved signal without splitting the interleaved signal, and only one CFR module is required because the input is an interleaved signal, so that the resource occupancy is reduced, and the processing efficiency is improved.
The third embodiment is a device embodiment corresponding to the first embodiment, and the detailed information can refer to the detailed description of the first embodiment, which is not described herein again.
Example four
Referring to fig. 14, a structural diagram of a multi-antenna signal processing apparatus according to a fourth embodiment of the present invention is shown, which specifically includes the following:
an interleaved signal obtaining module 401, configured to obtain an interleaved signal, where the interleaved signal is obtained by interleaving multiple antenna signals, and first frequencies of the multiple antenna signals are the same.
The interleaved signal acquiring module 401 includes:
the determining submodule 4011 is configured to determine a first frequency and at least two antennas corresponding to the first frequency from signal frequencies of multiple antennas.
The obtaining sub-module 4012 is configured to interleave the at least two antennas to obtain an interleaved signal.
An overrun peak point determining module 402, configured to determine at least one overrun peak point of the interleaved signal according to a preset threshold, where the overrun peak point corresponds to an antenna.
The over-limit peak point determining module 402 includes:
the peak point determining sub-module 4021 is configured to determine at least one peak point of the interleaved signal and an amplitude value corresponding to the peak point.
The over-limit peak point determining sub-module 4022 is configured to determine, from the at least one peak point, a peak point with the amplitude value greater than a preset threshold as an over-limit peak point.
The pulse signal generating module 403 is configured to generate a pulse signal with a second frequency according to a preset sequence of the antennas and phase information of the over-limit peak point corresponding to the antennas, where the second frequency is a multiple of the first frequency.
The pulse signal generating module 403 includes:
and the phase information obtaining sub-module 4031 is configured to sequentially obtain phase information of the over-limit peak points corresponding to the antennas according to a preset sequence of the antennas.
A first pulse amplitude determining submodule 4032, configured to determine, if phase information of an over-limit peak point corresponding to the antenna does not exist, that a pulse amplitude corresponding to the phase information is a first preset value.
A second pulse amplitude determining submodule 4033, configured to determine, if phase information of an over-limit peak point corresponding to the antenna exists, that the pulse amplitude corresponding to the phase information is a second preset value.
And the pulse signal generation submodule 4034 is configured to generate a pulse signal of a second frequency according to the pulse amplitude corresponding to the phase information.
And a peak clipping module 404, configured to perform peak clipping on the interleaved signal according to the pulse signal.
The peak reduction processing module 404 includes:
and the amplitude value adjusting submodule 4041 is configured to adjust the amplitude value of the over-limit peak point according to the preset threshold to obtain the adjusted amplitude value of the over-limit peak point.
Optionally, the amplitude value adjusting sub-module 4041 includes:
and the amplitude value adjusting unit is used for subtracting the amplitude value of the over-limit peak point from the preset threshold to obtain the adjusted amplitude value of the over-limit peak point.
And the amplitude value output sub-module 4042 is configured to sequentially output the adjusted amplitude values of the over-limit peak points according to the preset order of the antennas and the second frequency.
And the peak clipping pulse signal generating sub-module 4043 is configured to generate a peak clipping pulse signal according to the pulse signal and the output amplitude value of the over-limit peak point.
And the peak clipping sub-module 4044 is configured to perform peak clipping on the interleaved signal according to the peak clipping pulse signal.
In summary, the embodiments of the present invention provide a multi-antenna signal processing apparatus, which can perform peak clipping on an acquired interleaved signal without splitting the interleaved signal, and only one CFR module is required because the input is an interleaved signal, so that the resource occupancy is reduced, and the processing efficiency is improved.
The fourth embodiment is a device embodiment corresponding to the second embodiment, and the detailed information may refer to the detailed description of the second embodiment, which is not repeated herein.
An embodiment of the present invention further provides an electronic device, including: a processor, a memory and a computer program stored on the memory and executable on the processor, the processor implementing the aforementioned method when executing the program.
Embodiments of the present invention further provide a readable storage medium, where instructions executed by a processor of an electronic device enable the electronic device to execute the foregoing method.
For the device embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, refer to the partial description of the method embodiment.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a component of' 8230; \8230;" does not exclude the presence of another like element in a process, method, article, or apparatus that comprises the element.
While the present invention has been described with reference to the particular illustrative embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but is intended to cover various modifications, equivalent arrangements, and equivalents thereof, which may be made by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (14)
1. A method for multi-antenna signal processing, the method comprising:
acquiring an interleaved signal, wherein the interleaved signal is obtained by interleaving a plurality of antenna signals, and the first frequencies of the plurality of antenna signals are consistent;
determining at least one over-limit peak point of the interleaved signal according to a preset threshold, wherein the over-limit peak point corresponds to an antenna, and the over-limit peak point is a peak point of which the amplitude value exceeds the preset threshold in all the peak points of the interleaved signal;
generating a pulse signal of a second frequency according to a preset sequence of the antenna and phase information of an overrun peak point corresponding to the antenna, wherein the second frequency is a multiple of the first frequency;
carrying out peak clipping processing on the interleaved signal according to the pulse signal;
the step of generating a pulse signal of a second frequency according to the preset sequence of the antenna and the phase information of the over-limit peak point corresponding to the antenna comprises the following steps:
sequentially acquiring phase information of the over-limit peak points corresponding to the antennas according to a preset sequence of the antennas; and generating the pulse signal of the second frequency according to the pulse amplitude corresponding to the phase information.
2. The method of claim 1, wherein the step of generating the pulse signal of the second frequency according to the preset sequence of the antennas and the phase information of the over-limit peak points corresponding to the antennas comprises:
if the phase information of the over-limit peak point corresponding to the antenna does not exist, determining the pulse amplitude corresponding to the phase information to be a first preset value;
and if the phase information of the over-limit peak point corresponding to the antenna exists, determining that the pulse amplitude corresponding to the phase information is a second preset value.
3. The method of claim 1, wherein the step of obtaining the interleaved signal comprises:
determining a first frequency and at least two antennas corresponding to the first frequency from signal frequencies of a plurality of antennas;
and interleaving the at least two antennas to obtain an interleaved signal.
4. The method of claim 1, wherein the step of determining at least one over-limit peak point of the interleaved signal according to a predetermined threshold comprises:
determining at least one peak point of the interweaved signal and an amplitude value corresponding to the peak point;
and determining a peak point with the amplitude value larger than a preset threshold from the at least one peak point as an over-limit peak point.
5. The method of claim 4, wherein the step of performing peak clipping on the interleaved signal according to the pulse signal comprises:
adjusting the amplitude value of the over-limit peak point according to the preset threshold to obtain the adjusted amplitude value of the over-limit peak point;
outputting the adjusted amplitude value of the over-limit peak point in sequence according to the preset sequence of the antenna and the second frequency;
generating a peak clipping pulse signal according to the pulse signal and the output amplitude value of the over-limit peak point;
and carrying out peak clipping processing on the interweaved signal according to the peak clipping pulse signal.
6. The method of claim 5, wherein the step of adjusting the amplitude value of the over-limit peak point according to the preset threshold to obtain the adjusted amplitude value of the over-limit peak point comprises:
and subtracting the preset threshold from the amplitude value of the over-limit peak point to obtain the adjusted amplitude value of the over-limit peak point.
7. A multi-antenna signal processing apparatus, the apparatus comprising:
an interleaved signal acquisition module, configured to acquire an interleaved signal, where the interleaved signal is obtained by interleaving multiple antenna signals, and first frequencies of the multiple antenna signals are the same;
an overrun peak point determination module, configured to determine at least one overrun peak point of the interleaved signal according to a preset threshold, where the overrun peak point corresponds to an antenna, and the overrun peak point is a peak point of the interleaved signal where an amplitude value exceeds the preset threshold among all peak points;
the pulse signal generating module is used for generating a pulse signal of a second frequency according to the preset sequence of the antenna and the phase information of the over-limit peak point corresponding to the antenna, wherein the second frequency is a multiple of the first frequency;
the peak clipping processing module is used for carrying out peak clipping processing on the interweaved signal according to the pulse signal;
wherein the pulse signal generation module comprises:
the phase information acquisition submodule is used for sequentially acquiring the phase information of the over-limit peak point corresponding to the antenna according to the preset sequence of the antenna; and the pulse signal generation submodule is used for generating the pulse signal of the second frequency according to the pulse amplitude corresponding to the phase information.
8. The apparatus of claim 7, wherein the pulse signal generating module comprises:
the first pulse amplitude determining submodule is used for determining that the pulse amplitude corresponding to the phase information is a first preset value if the phase information of the over-limit peak point corresponding to the antenna does not exist;
and the second pulse amplitude determining submodule is used for determining that the pulse amplitude corresponding to the phase information is a second preset value if the phase information of the over-limit peak point corresponding to the antenna exists.
9. The apparatus of claim 7, wherein the interleaved signal acquisition module comprises:
the determining submodule is used for determining a first frequency and at least two antennas corresponding to the first frequency from signal frequencies of a plurality of antennas;
and the obtaining submodule is used for interweaving the at least two antennas to obtain an interweaved signal.
10. The apparatus of claim 7, wherein the over-limit peak point determining module comprises:
a peak point determining submodule for determining at least one peak point of the interleaved signal and an amplitude value corresponding to the peak point;
and the over-limit peak point determining sub-module is used for determining a peak point with the amplitude value larger than a preset threshold from the at least one peak point as an over-limit peak point.
11. The apparatus of claim 10, wherein the peak reduction processing module comprises:
the amplitude value adjusting sub-module is used for adjusting the amplitude value of the over-limit peak point according to the preset threshold to obtain the adjusted amplitude value of the over-limit peak point;
the amplitude value output sub-module is used for sequentially outputting the amplitude values of the adjusted over-limit peak points according to the preset sequence of the antenna and the second frequency;
the peak clipping pulse signal generation submodule is used for generating a peak clipping pulse signal according to the pulse signal and the output amplitude value of the over-limit peak point;
and the peak clipping processing submodule is used for carrying out peak clipping processing on the interweaved signal according to the peak clipping pulse signal.
12. The apparatus of claim 11, wherein the amplitude value adjustment sub-module comprises:
and the amplitude value adjusting unit is used for subtracting the amplitude value of the over-limit peak point from the preset threshold to obtain the adjusted amplitude value of the over-limit peak point.
13. An electronic device, comprising:
a processor, a memory and a computer program stored on the memory and executable on the processor, the processor implementing the method according to any one of claims 1 to 6 when executing the program.
14. A readable storage medium, wherein instructions in the storage medium, when executed by a processor of an electronic device, enable the electronic device to perform the method of any of claims 1-6.
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