Design and performance analysis of dual-mode triple-dimensional index modulation differential chaos shift keying system

HE Lifang; WU Xinggen; XUE Yansong

doi:10.11959/j.issn.1000-436x.2024116

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Design and performance analysis of dual-mode triple-dimensional index modulation differential chaos shift keying system

Papers | 更新时间：2024-08-08

- Design and performance analysis of dual-mode triple-dimensional index modulation differential chaos shift keying system
- Journal on Communications Vol. 45, Issue 6, Pages: 176-186(2024)
- 作者机构：
  
  1.重庆邮电大学通信与信息工程学院，重庆 400065
  2.重庆邮电大学光电工程学院，重庆 400065
- 作者简介：
- 基金信息：
  
  The Chongqing Natural Science Foundation(CSTB2023NSCQ-MSX0235;cstc2021jcyj-msxmX0836)
- DOI：10.11959/j.issn.1000-436x.2024116
  CLC： TN911.3
- Received：10 January 2024，
  
  Revised：2024-06-06，
  
  Published：25 June 2024
- 稿件说明：
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贺利芳,武兴根,薛岩松.双模三维索引调制差分混沌移位键控系统的设计及性能分析[J].通信学报,2024,45(06):176-186.

HE Lifang,WU Xinggen,XUE Yansong.Design and performance analysis of dual-mode triple-dimensional index modulation differential chaos shift keying system[J].Journal on Communications,2024,45(06):176-186.
贺利芳,武兴根,薛岩松.双模三维索引调制差分混沌移位键控系统的设计及性能分析[J].通信学报,2024,45(06):176-186. DOI： 10.11959/j.issn.1000-436x.2024116.

HE Lifang,WU Xinggen,XUE Yansong.Design and performance analysis of dual-mode triple-dimensional index modulation differential chaos shift keying system[J].Journal on Communications,2024,45(06):176-186. DOI： 10.11959/j.issn.1000-436x.2024116.

摘要

针对传统差分混沌移位键控系统速率低、误码性能差的问题，提出了一种双模三维索引调制差分混沌移位键控系统。该系统利用时隙、正交码和顺序索引，在选中与未选中的时隙上均传输信息比特。在接收端，通过采用降噪技术，减小了噪声的方差，提升了系统误码性能。推导了在加性白高斯噪声信道和多径瑞利衰落信道下的比特差错率公式。仿真结果显示，与相似的混沌键控系统相比，所提系统具备更高的数据速率和更为优越的误码性能。

Abstract

Given the issues of low transmission rate and poor bit error performance in traditional differential chaos shift keying systems

a dual-mode three-dimensional index modulation differential chaos shift keying (DMTD-IM-DCSK) system was proposed. This system simultaneously utilized time slots

orthogonal codes

and sort index to transmit information on both selected and unselected time slots. At the receiver

the variance of noise was reduced and the system’s error performance was improved by the use of denoising techniques. Formulas for bit error rate (BER) were derived for additive white Gaussian noise channels and multipath Rayleigh fading channels. Simulation results demonstrate that

compared to similar chaotic keying systems

the proposed system achieves higher data rates and superior error performance.

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Keywords

references

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