陈俊,,
张天骐
重庆邮电大学通信与信息工程学院 重庆 400065
基金项目:国家自然科学基金(61771085, 61371164)，信号与信息处理重庆市市级重点实验室建设项目(CSTC2009CA2003)，重庆市教育委员会科研项目(KJ1600429)
详细信息
作者简介:贺利芳：女，1979年生，硕士，副教授，研究方向为混沌保密通信，微弱信号检测
陈俊：男，1993年生，硕士生，研究方向为混沌保密通信
张天骐：男，1971年生，博士后，教授，研究方向为扩频信号的盲处理、语音信号处理、神经网络实现以及信号的同步处理
通讯作者:陈俊 945916163@qq.com
中图分类号:TN911.3计量
文章访问数:1011
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被引次数:0
出版历程
收稿日期:2019-02-27
修回日期:2020-01-08
网络出版日期:2020-07-02
刊出日期:2020-08-18
Performance Analysis of Short Reference Multi-User Differential Chaos Shift Keying Communication System
Lifang HE,Jun CHEN,,
Tianqi ZHANG
School of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
Funds:The National Natural Science Foundation of China (61771085, 61371164), The Project of Key Laboratory of Signal and Information Processing of Chongqing (CSTC2009CA2003), The Research Project of Chongqing Educational Commission (KJ1600429)
摘要
摘要:短参考差分混沌移位键控(SR-DCSK)系统主要的缺陷是数据传输速率较低。为此，该文提出一种短参考多用户差分混沌移位键控(SR-MUDCSK) 通信方案。利用Walsh码的正交性传输多个用户的信息，有效提高了数据传输速率。在AWGN和多径Rayleigh衰落信道环境下，对其误码性能进行了理论分析，并进行了实验仿真。结果表明：该系统在传输速率方面有较大提升，且能量效率也得到了显著改善，因此其具有重要应用价值。
关键词:短参考多用户差分混沌移位键控通信系统/
短参考差分混沌移位键控/
Walsh码/
传输速率/
误码率
Abstract:The major drawback of Short Reference Differential Chaos Shift Keying (SR-DCSK) system is the low data transmission rate. To solve the problem, a Short Reference Multi-User Differential Chaos Shift Keying (SR-MUDCSK) communication scheme is proposed. The orthogonality of Walsh code is used to transmit the information of multiple users, which effectively improves the data transmission rate. The theoretical Bit Error Rate (BER) performance is analyzed, and experimental simulation is carried out under AWGN and multipath Rayleigh fading channel environment, respectively. The results show that the system has a significant improvement in transmission rate, and the energy efficiency is also significantly improved. Therefore, it is of great value in application.
Key words:Short Reference Multi-User Differential Chaos Shift Keying (SR-MUDCSK) communication system/
Short Reference Differential Chaos Shift Keying (SR-DCSK)/
Walsh code/
Transmission rate/
Bit Error Rate (BER)
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