CN-122001735-A - Signal processing method, signal processing device, storage medium, and electronic apparatus

CN122001735ACN 122001735 ACN122001735 ACN 122001735ACN-122001735-A

Abstract

The application provides a signal processing method, a signal processing device, a storage medium and electronic equipment, wherein the method comprises the steps of determining a plurality of basic carriers in a working frequency band, wherein the plurality of basic carriers are used in an aggregation mode, a first synchronous signal is mapped on one basic carrier through a frequency domain and is used for carrying out frame detection on synchronous information block frames on the basic carrier, the basic carrier is an initial carrier in use, determining phase rotation factors corresponding to the basic carriers, and carrying out phase rotation on the first synchronous signal on the basic carrier corresponding to the phase rotation factors to obtain first processing signals of the basic carrier, wherein peak positions of at least two first processing signals are different. According to the method, the synchronous signals of different basic carriers are subjected to specific phase rotation, and the power peak-to-average ratio of the synchronous signals during multi-carrier aggregation can be remarkably reduced on the basis that the time domain characteristics of the synchronous signals are not affected.

Inventors

SUN LUKUAN
HUANG CHI
FENG XUELIN
LIU PAN
ZHU BIYING
QIAN MANLI
SHI JINGLIN

Assignees

北京中科晶上科技股份有限公司

Dates

Publication Date: 20260508
Application Date: 20260409

Claims (10)

1. A signal processing method, comprising: Determining a plurality of basic carriers in a working frequency band, wherein a plurality of basic carriers are used in an aggregation way, a first synchronization signal is mapped on one basic carrier through a frequency domain, the first synchronization signal is used for synchronous head detection of signals, and the basic carrier is an initial carrier in use; determining phase rotation factors corresponding to the plurality of basic carriers respectively; And carrying out phase rotation on the first synchronous signals on the corresponding basic carriers according to the phase rotation factors respectively corresponding to the plurality of basic carriers to obtain first processing signals of the corresponding basic carriers, wherein the peak positions of at least two first processing signals are different.
2. The method of claim 1, wherein the phase rotating the first synchronization signal on the corresponding base carrier according to the phase rotation factors corresponding to the plurality of base carriers, respectively, to obtain the first processed signal of the corresponding base carrier comprises: And respectively multiplying the phase rotation factors corresponding to the plurality of basic carriers with the first synchronous signals on the corresponding basic carriers to obtain the first processing signals of the corresponding basic carriers.
3. The method of claim 1, wherein a second synchronization signal is mapped on one of the base carriers by a frequency domain, and wherein the first synchronization signal is transmitted earlier than the second synchronization signal, the method further comprising: and respectively multiplying the phase rotation factors corresponding to the plurality of basic carriers with the second synchronous signals on the corresponding basic carriers to obtain second processing signals of the corresponding basic carriers, wherein the peak positions of at least two second processing signals are different.
4. A method according to claim 3, characterized in that the method further comprises: acquiring a local signal of a signal receiving end corresponding to the basic carrier, wherein the local signal is a signal which is used for channel estimation and is local to the signal receiving end; Performing phase rotation on the local signal according to the corresponding phase rotation factor to obtain a third processing signal, wherein the third processing signal is the product of the local signal and the phase rotation factor; and carrying out channel estimation on the channel corresponding to the basic carrier according to the second processing signal and the third processing signal.
5. The method of claim 1, wherein a second synchronization signal and a synchronization signaling symbol are further mapped on one of the base carriers, the synchronization signaling symbol being a symbol sequence, the synchronization signaling symbol including system configuration parameters at least for performing multi-carrier aggregation access, signal demodulation, and resource scheduling processing, the method further comprising: And multiplying the phase rotation factors respectively corresponding to the plurality of basic carriers by the second synchronous signals on the corresponding basic carriers to obtain second processing signals of the corresponding basic carriers, and multiplying the phase rotation factors respectively corresponding to the plurality of basic carriers by the synchronous signaling symbols on the corresponding basic carriers to obtain fourth processing signals of the corresponding basic carriers, wherein the peak positions of at least two second processing signals are different.
6. The method of claim 1, wherein determining the phase rotation factors for each of the plurality of base carriers comprises: Acquiring a preset coefficient value and a relative sequence number of a target carrier, wherein the target carrier is any one of the basic carriers, the relative sequence number is an arrangement sequence number of the target carrier in all initial carriers, and all the initial carriers are arranged from low frequency to high frequency; determining a target index according to the relative sequence number and the preset coefficient value; And taking a natural constant as a base, taking the target index as an index, and carrying out index operation to obtain the phase rotation factor corresponding to the target carrier.
7. The method of claim 6, wherein obtaining the predetermined coefficient value comprises: acquiring the number of all the basic carriers in the working frequency band to obtain a target number; And determining the integer power of a preset constant closest to the target number as the preset coefficient value.
8. A signal processing apparatus, comprising: A first determining unit, configured to determine a plurality of base carriers in a working frequency band, where a plurality of base carriers are used in an aggregate manner, and a first synchronization signal is mapped on one base carrier through a frequency domain, where the first synchronization signal is used for performing synchronization header detection of a signal, and the base carrier is an initial carrier that is being used; a second determining unit, configured to determine phase rotation factors corresponding to the plurality of base carriers respectively; And the processing unit is used for carrying out phase rotation on the first synchronous signals on the corresponding basic carriers according to the phase rotation factors respectively corresponding to the plurality of basic carriers to obtain first processing signals of the corresponding basic carriers, wherein the peak positions of at least two first processing signals are different.
9. A computer-readable storage medium, characterized in that the computer-readable storage medium comprises a stored program, wherein the program, when run, controls a device in which the computer-readable storage medium is located to perform the signal processing method of any one of claims 1 to 7.
10. An electronic device comprising one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs comprising instructions for performing the signal processing method of any of claims 1-7.

Description

Signal processing method, signal processing device, storage medium, and electronic apparatus Technical Field The present application relates to the field of wireless communication technologies, and in particular, to a signal processing method, a signal processing apparatus, a storage medium, and an electronic device. Background In modern wireless communication systems, in order to improve spectrum utilization and peak data rate, a multi-Carrier aggregation technology is often adopted, that is, a plurality of independent Basic carriers (Basic carriers) are combined to form a wideband transmission channel. In order to achieve fast access and time-frequency synchronization between the terminal and the base station, the system is configured with at least one synchronization signal on each basic carrier, and the at least one synchronization signal generally comprises a first synchronization signal and a second synchronization signal. However, when a plurality of basic carriers are subjected to aggregation transmission, because the synchronous signals on the carriers are completely consistent in the frequency domain, the time domain waveforms generated after independent Inverse Fast Fourier Transform (IFFT) are highly correlated in the time axis, so that the waveforms are subjected to coherent superposition at the peak moment, and the instantaneous peak power of the aggregated signals is remarkably raised. Therefore, the ratio of Peak power to average power, i.e., peak-to-Average Power Ratio (PAPR for short), increases sharply, so that the power amplifier must operate in a back-off mode far from the saturation region, thereby greatly reducing the energy conversion efficiency thereof. Disclosure of Invention The application mainly aims to provide a signal processing method, a signal processing device, a storage medium and electronic equipment, which at least solve the problem of low energy conversion efficiency caused by overhigh peak-to-average power ratio when a plurality of basic carriers are subjected to aggregation transmission in the prior art. In order to achieve the above object, according to an aspect of the present application, there is provided a signal processing method, including determining a plurality of base carriers in an operating frequency band, where a plurality of base carriers are aggregated and used, a first synchronization signal is mapped on one of the base carriers through a frequency domain, the first synchronization signal is used for synchronous head detection of a signal, the base carrier is an initial carrier being used, determining phase rotation factors corresponding to the plurality of base carriers, respectively, and performing phase rotation on the first synchronization signal on the corresponding base carrier according to the phase rotation factors corresponding to the plurality of base carriers, respectively, to obtain first processed signals of the corresponding base carrier, where peak positions of at least two first processed signals are different. Optionally, the phase rotation is performed on the first synchronization signals on the corresponding base carriers according to the phase rotation factors respectively corresponding to the plurality of base carriers to obtain first processing signals of the corresponding base carriers, which comprises the steps of multiplying the phase rotation factors respectively corresponding to the plurality of base carriers with the first synchronization signals on the corresponding base carriers to obtain the first processing signals of the corresponding base carriers. Optionally, the second synchronization signal is mapped on one of the base carriers through a frequency domain, the sending time of the first synchronization signal is earlier than the sending time of the second synchronization signal, and the method further comprises the steps of multiplying the phase rotation factors respectively corresponding to the plurality of base carriers with the second synchronization signals on the corresponding base carriers to obtain second processing signals of the corresponding base carriers, wherein the peak positions of at least two second processing signals are different. Optionally, the method further comprises the steps of obtaining a local signal of a signal receiving end corresponding to the basic carrier, wherein the local signal is a signal which is used for channel estimation and is local to the signal receiving end, carrying out phase rotation on the local signal according to the corresponding phase rotation factor to obtain a third processing signal, wherein the third processing signal is the product of the local signal and the phase rotation factor, and carrying out channel estimation on a channel corresponding to the basic carrier according to the second processing signal and the third processing signal. Optionally, a second synchronization signal and a synchronization signaling symbol are mapped on one of the base carriers, the s