Anti-interference communication method and receiving device based on single-channel blind source separation

Abstract

The invention discloses an anti-interference communication method and system based on single-channel blind source separation, and belongs to the technical field of communication. The method comprises a training stage and a working stage. At the training stage, a communication signal is generated according to a prepared frequency set, wavelet packet decomposition is carried out on the communication signal, and a reference signal set is selected and stored. At the working stage, a signal is received through an antenna, wavelet packet decomposition is carried out on the received signal, an auxiliary signal is determined, two paths of observation signals are constructed and are separated through the blind source separation, useful signals are selected from the separation signals, and the useful signals are demodulated and coded to recover an information sequence. The invention further discloses an anti-interference communication receiving device based on single-channel blind source separation. The anti-interference communication method and system and the receiving device have the advantages that the blind source separation method is achieved on a single antenna communication device, and the communication anti-interference capacity can be improved without increasing the spectrum resource expenditure conditions.

Description

a technical field [0001] The invention belongs to an anti-interference communication method, in particular to an anti-interference communication method based on single-channel blind source separation, and belongs to the technical field of communication. Two background technology [0002] The current electromagnetic environment is becoming more and more complex, and the probability of interference signals such as various natural interferences, artificial interferences, and artificial malicious interferences falling into the bandwidth of wireless communication signals is increasing, which has seriously affected the performance of wireless communication. [0003] Spread spectrum communications (spread spectrum communications, referred to as spread spectrum communications or spread spectrum communications) improves the anti-interference ability of communication signals by increasing the bandwidth of the signal. Conflicts between increasingly tense spectrum resources. [0004] T...

AI Technical Summary

Problems solved by technology

However, the traditional blind source separation technology requires multiple receiving signals, which is difficult to be directly applied in single-antenna communication equipment

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