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基于矩阵低秩估计的可靠多载波差分混沌键控接收机

张琳 陈炳均 吴志强

张琳, 陈炳均, 吴志强. 基于矩阵低秩估计的可靠多载波差分混沌键控接收机[J]. 电子与信息学报, 2021, 43(1): 37-44. doi: 10.11999/JEIT200349
引用本文: 张琳, 陈炳均, 吴志强. 基于矩阵低秩估计的可靠多载波差分混沌键控接收机[J]. 电子与信息学报, 2021, 43(1): 37-44. doi: 10.11999/JEIT200349
Lin ZHANG, Bingjun CHEN, Zhiqiang WU. Reliable Multi Carrier Differential Chaos Shift Keying Receiver Based on Low Rank Approximation of Matrices Estimation[J]. Journal of Electronics & Information Technology, 2021, 43(1): 37-44. doi: 10.11999/JEIT200349
Citation: Lin ZHANG, Bingjun CHEN, Zhiqiang WU. Reliable Multi Carrier Differential Chaos Shift Keying Receiver Based on Low Rank Approximation of Matrices Estimation[J]. Journal of Electronics & Information Technology, 2021, 43(1): 37-44. doi: 10.11999/JEIT200349

基于矩阵低秩估计的可靠多载波差分混沌键控接收机

doi: 10.11999/JEIT200349
基金项目: 国家自然科学基金(61602531),广东省自然科学基金(2020A1515010703),西藏自治区科技计划项目-重点研发与转化计划(XZ201901-GB-16)
详细信息
    作者简介:

    张琳:女,1976年生,副教授,研究方向为无线通信、混沌调制、智能信息传输等

    陈炳均:男,1995年生,硕士生,研究方向为高可靠性数字混沌通信系统等

    吴志强:男,1973年生,教授,研究方向为无线通信、调制识别与混叠信号检测、大数据与智能信息传输等

    通讯作者:

    张琳 isszl@mail.sysu.edu.cn

  • 中图分类号: TN914.42

Reliable Multi Carrier Differential Chaos Shift Keying Receiver Based on Low Rank Approximation of Matrices Estimation

Funds: The National Natural Science Foundation of China (61602531), The Natural Science Foundation of Guang Dong Province (2020A1515010703), The Key Research and Development and Transformation Plan of Science and Technology Program for Tibet Autonomous Region (XZ201901-GB-16)
  • 摘要: 在多载波差分混沌键控(MC-DCSK)系统中,经由无线信道传输在接收端进行检测时,参考混沌信号的传输差错将降低承载信息的检测性能,降低传输可靠性。为了提高可靠性,该文基于承载信息的调制信号因共享参考混沌信号的低秩特性,提出了一种基于矩阵低秩估计(LRAM)的MC-DCSK接收机,增强系统可靠性。该接收机将接收信号矩阵表示为秩1矩阵和噪声矩阵之和,然后对接收信号矩阵进行低秩估计,以得到参考信号的最优估计,并进而将其用于承载信息的调制信号的检测和解调,从而提升系统传输可靠性。继而,该文证明了LRAM检测可等效于最大似然估计检测,并对信息泄露率理论安全性能进行了分析,分析结果表明所提方案安全性与基准MC-DCSK系统一致。仿真结果验证了该接收机在加性高斯白噪声(AWGN)和多径衰落信道下可有效提升MC-DCSK系统的可靠性。
  • 图  1  MC-DCSK系统发射机

    图  2  MC-DCSK系统发射信号矩阵示意图

    图  3  基于LRAM的MC-DCSK接收机框图

    图  4  AWGN信道下BER性能与比较

    图  5  多径信道下BER性能与比较

    图  6  多径信道下MC-DCSK-LRAM接收机BER性能与时延关系

    图  7  MC-DCSK-LRAM系统与MC-DCSK-IR系统、SA-MCDCSK系统的性能比较

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出版历程
  • 收稿日期:  2020-04-30
  • 修回日期:  2020-08-04
  • 网络出版日期:  2020-08-07
  • 刊出日期:  2021-01-15

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