摘要
研究了一种混沌序列的产生方法———Logistic映射法,并对用该法产生的序列进行了自相关性,互相关性以及平衡性的分析,另外也从理论上分析了扩频序列相关性对DS-CDMA系统中多址干扰的影响.计算机仿真结果表明,在DS-CDMA系统中,与伪随机序列相比混沌扩频序列明显地降低了系统的误码率,提高了系统的性能.
A kind of chaotic spread spectrum sequences - Logistic map is studied, and its sensitivity, corretation and balance are analyzed. Based on the theory, the influence of spread spectrum sequence correlation on MAI （ Multiple Access Interference） for DS - CDMA communication system is discussed, The result of computer simulation shows that the DS - CDMA communication system with chaotic sequence can sharply degrade the bit error ratio（BER） and improve the performance, compared with the pseudorandom number sequence.
出处
《昆明理工大学学报（理工版）》
2006年第2期62-65,共4页
Journal of Kunming University of Science and Technology(Natural Science Edition)
关键词
混沌序列
LOGISTIC映射
多址干扰
码分多址
chaotic sequence
Logistic map
multiple access interference
code division multiple access
