摘要
基于离散混沌信号,提出一种在AWGN(additivewhiteGaussiannoise)环境中双极性相干CSK(chaosshiftkeying)系统多用户噪声性能的分析方法。用Logistic映射作为混沌发生器,获得了用信噪比、用户数及比特序列长度表示的误码率(BER)表达式,单用户情况下的BER和噪声性能上界是该文结果的特例。理论计算与仿真结果相符,并对两者的差异进行了分析。
Based on discrete chaotic signals, an approach to calculating the noisy performance of the antipodal chaos-shift-keying system with a coherent correlator under a AWGN and multiuser environment is presented. Using a Logistic map as the chaos generator, the BER is derived in terms of the signal-to-noise ratios, the number of users and the length of bit sequence. The BER and its upper bound for single-user systems are the special cases of this paper. The calculated BERs are consistent with those found from simulations. In addition, the differences between calculated BER and its simulations are analyzed in this paper.
出处
《重庆邮电学院学报（自然科学版）》
2004年第3期1-4,共4页
Journal of Chongqing University of Posts and Telecommunications(Natural Sciences Edition)
基金
国家自然科学基金(69672022)
教育部高校博士点学科基金(00056107)
广州市科技发展等项目资助
关键词
双极性CSK
多用户噪声性能
仿真
antipodal chaos-shift-keying
multiuser noise performance
simulation.
