A method and system for differential chaotic phase shift keying communication based on hybrid index

Abstract

The present invention proposes a differential chaotic phase shift keying communication method and system based on a mixed index, which solves the problems of low spectral efficiency and energy efficiency and slow transmission data rate of the existing differential chaotic phase shift keying communication scheme. The method includes a mixed index-based differential chaotic phase shift keying transmit signal modulation method and a mixed index-based differential chaotic phase shift keying received signal demodulation method; wherein the mixed index is a mixed index bit, including a carrier index bit and a carrier number index Bit, mix the carrier index bits and the carrier number index bits to modulate the transmitted signal, and the modulation and demodulation under the mixed index are coordinated, compared with the single carrier index bit based differential chaotic phase shift keying communication mode energy efficiency and spectral efficiency High energy efficiency, spectral efficiency and bit error rate performance are comprehensively improved.

Description

technical field [0001] The present invention relates to the technical field of chaotic communication, and more particularly, to a method and system for differential chaotic phase shift keying communication based on mixed index. Background technique [0002] At present, due to the more and more common application of various multimedia technologies in life, the number of wireless users has increased rapidly, resulting in the scarcity of available spectrum resources. Therefore, in today's increasingly tight frequency band resources, people have higher and higher requirements for data transmission rates. Under the circumstance, it is very important to make rational use of spectrum resources and improve frequency band utilization and symbol speed. [0003] Due to the inherent characteristics of broadband, noise-like, long-term unpredictability and good initial value sensitivity of chaotic signals, chaotic broadband communication systems can be easily constructed and have broad ap...

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Problems solved by technology

[0005] In order to solve the problem of low spectrum efficiency and energy efficiency and slow data transmission rate in the existing differential chaotic phase shift keying communication system, the present invention proposes a hybrid index based differential chaotic phase shift keying communication method and system to improve energy efficiency, spectral efficiency and data transfer rate with better bit error rate

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