基于瑞利衰落信道的SIMO-HPO-CDSK混沌通信方案及其性能分析
Performance Analysis of SIMO-HPO-CDSK Chaotic Communication Scheme Based on Rayleigh Fading Channels
段俊毅 1杨华2
作者信息
- 1. 南京航空航天大学 电磁频谱空间认知动态系统重点实验室,南京 210003;南京铁道职业技术学院 通信信号学院,南京 210031
- 2. 南京邮电大学 自动化学院,南京 210003
- 折叠
摘要
本文提出单输入多输出高速率相位正交CDSK(single-input-multiple-output high-data-rate phase-orthog-onality correlation-delay-shift-keying,SIMO-HPO-CDSK),在接收端设置多天线获得分集增益.采用正交载波调制相同时隙的2个比特信息,获得高传输速率且无信号内干扰,瑞利衰落信道下分析性能和仿真.结果表明:SIMO-HPO-CDSK系统误码率随着接收端天线数量增加而下降;在接收方天线数量相同的条件下,由于没有无信号内干扰,与DCSK(differential chaos shift keying),CDSK和高效DCSK(high-efficiency-DCSK)相比,该方案具有出色的误码率性能;与PO-CDSK(phase-orthogonality CDSK)相比,由于同步传输2个比特,该方案频谱利用率提高一倍.
Abstract
A single input multiple output(SIMO)architecture for the High-Data-Rate PO-CDSK(HPO-CDSK)system is proposed.By employing multiple antennas at the receiver end,SIMO structure can obtain a diversity gain.Two bits information occupies the same time slot and modulated by the orthogonal carrier,a high rate can be obtained with-out intra-signal interference.The theoretical BER(bit error rate)expression and simulations are performed based on a Rayleigh fading channel.Results show that:the BER of SIMO-HPO-CDSK decreases with the increase in the number of receiver antennas;due to no ISI(inter symbol interference)component and SIMO architecture,the proposed SI-MO-HPO-CDSK architecture has an outstanding BER performance in contrast to those of DCSK(high-efficiency-DC-SK),CDSK and High-Efficiency DCSK(HE-DCSK);because two bits transmit in the same time slot,compared with our system's PO-CDSK(phase-orthogonality CDSK),our spectral efficiency is double.
关键词
单输入多输出/HPO-CDSK/瑞利衰落信道Key words
single input multiple output/HPO-CDSK/Rayleigh fading channel引用本文复制引用
基金项目
国家自然科学基金(61971240)
电磁频谱空间认知动态系统工信部重点实验室开放基金(KF20181905)
"333工程"科研项目(BRA2020322)
出版年
2024
NETL
NSTL
万方数据