A method for generating chaotic spread-spectrum sequences and their optimized selection algorithm

被引：14
|
作者：
Yu Zhen-Biao [1 ]
Feng Jiu-Chao [1 ]
机构：
[1] S China Univ Technol, Coll Elect & Informat Engn, Guangzhou 510641, Peoples R China
来源：
ACTA PHYSICA SINICA | 2008年 / 57卷 / 03期
关键词：
CDMA; optimized selection algorithm; Rayleigh fading channel; BER;
D O I：
10.7498/aps.57.1409
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A method for generating chaotic spread-spectrum sequences based on the combined chaotic map is proposed. An optimized selection algorithm based on the property requirement of spread-spectrum sequences and the performance index of multiple access interference is also presented. Simulation is performed for the optimized chaotic sequence, and an optimized logistic sequence is applied to a direct sequence spread-spectrum CDMA system under different channel conditions. The results show that the chaotic spread-spectrum sequences generated by the proposed method have similar performance as the logistic spread-spectrum sequences and have better security.
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页码：1409 / 1415
页数：7
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