CN-116915269-B - Diversity combining method, device, equipment and storage medium

CN116915269BCN 116915269 BCN116915269 BCN 116915269BCN-116915269-B

Abstract

The application discloses a diversity combining method, device, equipment and storage medium, wherein the method comprises the steps of obtaining signal data of multiple paths of signals, wherein the signal data comprises amplitude values of each path of signals and noise, the signal data are transmitted to a receiving module after being subjected to scrambling, coding, interleaving, modulating and diversity processing by a transmitting module, each path of signals comprises multiple frequency points, calculating an interference filtering threshold value of each path of signals according to the amplitude values of each path of signals and noise, calculating the frequency point amplitude values of all frequency points in each path of signals, and combining undisturbed frequency points based on the frequency point amplitude values and the interference filtering threshold values of all frequency points to obtain a combining result. According to the scheme, the receiving module can filter interference information from a plurality of signal data with different interference of the message by using a frequency point selection and combination method so as to recover the transmitted message, so that diversity gain is obtained under the condition of increasing smaller complexity, the sensitivity of signal receiving is improved, and the acquired signal accuracy is higher.

Inventors

Guan Yundi
ZHENG HANYU
ZHENG ZHONG
LI WENJI
Luan shan

Assignees

中国空间技术研究院

Dates

Publication Date: 20260512
Application Date: 20230817

Claims (8)

1. A diversity combining method, the method comprising: The method comprises the steps of obtaining signal data of multiple paths of signals, wherein the signal data comprises amplitude values of each path of signals and noise, and the signal data is transmitted to a receiving module after a transmitting module sequentially performs scrambling, coding, interleaving, modulation and diversity processing on source signals; according to the amplitude values of each path of signal and noise, calculating an interference filtering threshold value of each path of signal, and calculating the frequency point amplitude values of all frequency points in each path of signal; Combining the undisturbed frequency points based on the frequency point amplitude values of all the frequency points and the interference filtering threshold value to obtain a combined result; The combining processing is carried out on the undisturbed frequency points based on the frequency point amplitude values of all the frequency points and the interference filtering threshold value to obtain a combining result, which comprises the following steps: determining an interference result of each frequency point based on the frequency point amplitude values of all the frequency points and the interference filtering threshold value, wherein the interference result is used for representing whether the frequency points are interfered or not; for each signal, acquiring signal values of all frequency points; determining a target weight matrix of all frequency points in each signal based on the signal values of all frequency points and the interference filtering threshold value of each signal; and obtaining a merging result based on the signal value and the target weight matrix.
2. The method of claim 1, wherein determining the interference result for each bin based on the bin magnitudes for all bins and the interference filtering threshold comprises: for each frequency point of all frequency points in each signal, judging whether the frequency point amplitude of each frequency point is larger than the interference filtering threshold value; when the interference is larger than the interference filtering threshold, determining that the interference result of the frequency point larger than the interference filtering threshold is interfered; and when the interference is not greater than the interference filtering threshold, determining that the interference result of the frequency points not greater than the interference filtering threshold is not interfered.
3. The method of claim 1, wherein determining the target weight matrix for all frequency points in each signal based on the signal values for all frequency points and the interference filtering threshold for each signal comprises: Resetting the selection weight of the frequency points which are interfered to zero, resetting the selection weight of the frequency points which are not interfered to one, and obtaining a target weight matrix of all the frequency points based on the selection weight Obtaining self-normalization weights of all frequency points based on the signal values of all frequency points and the interference filtering threshold value of each signal, and taking the self-normalization weights of all frequency points as the target weight matrix, or And obtaining the RS weights of all the frequency points based on the signal values of all the frequency points and the interference filtering threshold value of each signal, and taking the RS weights of all the frequency points as the target weight matrix.
4. The method of claim 1, wherein calculating the interference filtering threshold for each signal based on the magnitudes of the noise and each signal comprises: determining signal power and noise power spectral density of a single bit based on the amplitude of each signal and noise; calculating the ratio of the signal power of the single bit to the noise power spectral density, and determining the signal-to-noise ratio; And calculating an interference filtering threshold value of each signal based on the signal-to-noise ratio and a preset maximum amplitude parameter.
5. The method of claim 1, wherein after combining the undisturbed frequency points to obtain a combined result, the method further comprises: demodulating the combined result to obtain a demodulation result; Performing de-interleaving treatment on the demodulation result to obtain a de-interleaving result; Decoding the de-interleaving result to obtain a decoding result; and descrambling the decoding result to obtain a source signal.
6. A diversity combining apparatus, the apparatus comprising: The system comprises an acquisition module, a transmission module, a receiving module and a signal processing module, wherein the acquisition module is used for acquiring signal data of multiple paths of signals, the signal data comprises amplitude values of each path of signals and noise, and the signal data is transmitted to the receiving module after the source signals are sequentially subjected to scrambling, coding, interleaving, modulation and diversity processing by the transmission module; The calculation module is used for calculating an interference filtering threshold value of each path of signal according to the amplitude values of each path of signal and noise, and calculating the frequency point amplitude values of all frequency points in each path of signal; The combining module is used for combining the undisturbed frequency points based on the frequency point amplitude values of all the frequency points and the interference filtering threshold value to obtain a combining result; The merging module is used for: determining an interference result of each frequency point based on the frequency point amplitude values of all the frequency points and the interference filtering threshold value, wherein the interference result is used for representing whether the frequency points are interfered or not; for each signal, acquiring signal values of all frequency points; determining a target weight matrix of all frequency points in each signal based on the signal values of all frequency points and the interference filtering threshold value of each signal; and obtaining a merging result based on the signal value and the target weight matrix.
7. A computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the diversity combining method according to any of claims 1-5 when executing the computer program.
8. A computer readable storage medium having stored thereon a computer program for execution by a processor for implementing the diversity combining method of any of claims 1-5.

Description

Diversity combining method, device, equipment and storage medium Technical Field The present invention relates generally to the field of anti-interference communication technologies, and in particular, to a diversity combining method, apparatus, device, and storage medium. Background With the rapid development of communication technology, communication systems face multi-source and multi-mode interference in complex electromagnetic environments due to released high-density, high-intensity and multi-spectrum electromagnetic waves in complex electromagnetic environments. In order to reduce the influence of interference on the communication system and improve the signal receiving sensitivity, the frequency hopping system often needs to perform diversity processing on the signal of the transmitting end and perform multipath combining processing on the receiving end, however, in the diversity combining process, the interference often has an influence on the signal accuracy. Therefore, in order to ensure accuracy of signal transmission, it is important to study how to reduce interference in the diversity combining process. At present, in the related art, the interference type is determined by firstly performing interference detection and identification on the received signal, and the interference type is eliminated, and then the multipath diversity signals are combined by adopting a combining method without channel auxiliary judgment, wherein the combining method can be a linear combining algorithm, a self-normalization detection algorithm and a product diversity combining algorithm. However, the algorithms are used for judging the optimized signal by adding, multiplying, dividing and other related data operations on the received multi-hop diversity signals, the processing process is simple, the system is simple, the anti-interference and fading capability is poor, and the acquired signal accuracy is low. Disclosure of Invention In view of the foregoing drawbacks or shortcomings of the prior art, it is desirable to provide a diversity combining method, apparatus, device, and storage medium. In a first aspect, the present invention provides a diversity combining method, the method comprising: The method comprises the steps of obtaining signal data of multiple paths of signals, wherein the signal data comprises amplitude values of each path of signals and noise, and the signal data is transmitted to a receiving module after a transmitting module sequentially performs scrambling, coding, interleaving, modulation and diversity processing on source signals; according to the amplitude values of each path of signal and noise, calculating an interference filtering threshold value of each path of signal, and calculating the frequency point amplitude values of all frequency points in each path of signal; and combining the undisturbed frequency points based on the frequency point amplitude values of all the frequency points and the interference filtering threshold value to obtain a combined result. In one embodiment, based on the frequency point amplitudes of all the frequency points and the interference filtering threshold, combining the frequency points which are not interfered to obtain a combined result, including: determining an interference result of each frequency point based on the frequency point amplitude values of all the frequency points and the interference filtering threshold value, wherein the interference result is used for representing whether the frequency points are interfered or not; And combining the undisturbed frequency points based on the interference result to obtain a combined result. In one embodiment, determining the interference result of each frequency point based on the frequency point magnitudes of all frequency points and the interference filtering threshold includes: for each frequency point of all frequency points in each signal, judging whether the frequency point amplitude of each frequency point is larger than the interference filtering threshold value; when the interference is larger than the interference filtering threshold, determining that the interference result of the frequency point larger than the interference filtering threshold is interfered; and when the interference is not greater than the interference filtering threshold, determining that the interference result of the frequency points not greater than the interference filtering threshold is not interfered. In one embodiment, based on the interference result, combining the frequency points not interfered to obtain a combined result, including: for each signal, acquiring signal values of all frequency points; determining a target weight matrix of all frequency points in each signal based on the signal values of all frequency points and the interference filtering threshold value of each signal; and obtaining a merging result based on the signal value and the target weight matrix. In one embodiment, determining the target weig