A High Rate Differential Chaos Shift Keying Communication Scheme with Multiple Input and Multiple Output

CHEN Jun; HE Lifang; ZHANG Tianqi

doi:10.7652/xjtuxb202002017

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A High Rate Differential Chaos Shift Keying Communication Scheme with Multiple Input and Multiple Output

更新时间：2025-05-08

- A High Rate Differential Chaos Shift Keying Communication Scheme with Multiple Input and Multiple Output
- Vol. 54, Issue 2, Pages: 137-143+174(2020)
- 作者机构：
  
  重庆邮电大学通信与信息工程学院,重庆,400065
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202002017
  CLC： TN911.3
- Online First：10 February 2020，
  
  Published：2020
- 稿件说明：
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CHEN Jun, HE Lifang, ZHANG Tianqi. A High Rate Differential Chaos Shift Keying Communication Scheme with Multiple Input and Multiple Output[J]. 2020, 54(2): 137-143+174.
DOI：

CHEN Jun, HE Lifang, ZHANG Tianqi. A High Rate Differential Chaos Shift Keying Communication Scheme with Multiple Input and Multiple Output[J]. 2020, 54(2): 137-143+174. DOI： 10.7652/xjtuxb202002017.

摘要

为解决传统差分混沌移位键控(DCSK)通信方案信息速率低和误码率性能差的问题

提出了一种高速差分混沌移位键控(HR-DCSK)通信方案。在发送端

将发送信号的信息帧由2个时隙扩展为3个时隙

并利用希尔伯特变换技术使得一帧发送信号可携带4 bit数据信息; 在接收端

采用相关解调法提取数据信息

通过检测相关器输出值的极性恢复数据信息。进一步提出了误码性能更好的多输入多输出(MIMO)HR-DCSK通信方案。利用高斯近似法推导了AWGN和多径Rayleigh衰落信道下MIMO-HR-DCSK方案的比特误码率公式

并与典型的方案进行了仿真比较。仿真结果表明:相同条件下

与MIMO高效差分混沌移位键控(HE-DCSK)方案相比

MIMO-HR-DCSK方案的信息速率提升了约33%

在信噪比为11 dB时

误码性能提升了约73%。

Abstract

A high rate differential chaos shift keying(HR-DCSK)communication scheme is proposed to improve the problems of low information rate and poor bit error rate(BER)performance of traditional differential chaos shift keying(DCSK)communication scheme. The information frame of the transmitted signal is expanded from two slots to three slots at the transmitter

and the Hilbert transform technology is used to make one frame of the transmitted signal carry 4 bits of data information. The correlation demodulation method is used to extract data information at the receiver

and the data information is recovered by detecting the polarity of the output value of the correlator. Furthermore

a HR-DCSK communication scheme having better bit error rate performance with multiple input and multiple output(MIMO)is proposed. BER expressions of the MIMO-HR-DCSK scheme under AWGN and multi-path Rayleigh fading channels are derived by using Gaussian approximation(GA)method

and the simulation results are compa

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references

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