Frequency hopping communication anti-interference method based on cognitive radio

Abstract

The invention discloses a frequency hopping communication anti-interference method based on cognitive radio. The frequency hopping communication anti-interference method comprises a frequency hopping communication interference spectrum sensing method, a method for obtaining spectrum windows by eliminating interference frequency points and a frequency hopping key sharing and transmitting method under an interference condition. Relevant ideas of the cognitive radio are combined into frequency hopping communication, and a plurality of spectrum windows with low interference temperatures are dynamically selected by sensing a surrounding electromagnetic environment as transmission frequency bands for frequency hopping signals, so that the adaptability of a radio frequency-hopping broadcasting station to the electromagnetic environment can be improved, the utilization rate of spectrum resources is increased, malicious interferences of enemies and self-disturbances between broadcast stations can be further suppressed, the network capacity of a frequency hopping communication network is improved, and the error rate of the whole frequency hopping system is reduced.

Description

technical field [0001] The present invention combines the field of cognitive radio and frequency hopping communication, and specifically relates to a channel capacity used to improve the anti-random interference, burst interference and mixed interference conditions of frequency hopping radio stations, and reduce system communication errors in interference environments rate method. Background technique [0002] Frequency hopping communication has attracted much attention because of its good confidentiality, anti-far and near effect, and anti-interference performance. It is widely used in modern military short-wave, ultra-short wave and data link communication equipment. With the increasingly complex electromagnetic environment, existing frequency hopping communication systems are facing more and more problems and challenges, which gradually affect the performance of frequency hopping anti-jamming communication systems. [0003] Availability (bandwidth, system capacity) and ...

AI Technical Summary

Problems solved by technology

With the wide application of frequency hopping multiple access and frequency hopping networking in wireless communication, the available frequency resources between different users in the network and between networks in the same frequency band will become increasingly tense, and the orthogonality of the frequency hopping pattern set will increase. It is more difficult to be guaranteed, which leads to the increasingly obvious collision phenomenon of frequency hopping points, which will directly restrict the capacity improvement of frequency hopping communication network

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