Performance Evaluation of LFSR-Based Spreading Sequences with Negative Auto-correlation Designed by Chaos Theory of Modulo-2 Added Sequences

被引：4
|
作者：
Tsuneda, Akio [1 ]
Miyazaki, Yasunori [1 ]
机构：
[1] Kumamoto Univ, Dept Comp Sci & Elect Engn, Kumamoto 8608555, Japan
来源：
2009 EUROPEAN CONFERENCE ON CIRCUIT THEORY AND DESIGN, VOLS 1 AND 2 | 2009年
关键词：
MULTIPLE-ACCESS COMMUNICATION; DS-CDMA SYSTEMS; BINARY SEQUENCES; INTERFERENCE;
D O I：
10.1109/ECCTD.2009.5274956
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In asynchronous DS/CDMA systems, spreading sequences with appropriate negative auto-correlation properties can outperform conventional LFSR (linear feedback shift register) sequences with respect to bit error rate (BER) performance. Spreading sequences with negative auto-correlations can be generated by using one-dimensional chaotic maps but their hardware cost is more expensive than LFSRs. In this paper, we design spreading sequences with negative auto-correlation to be generated by LFSRs, which is based on the chaos theory for the Bernoulli chaotic map and modulo-2 added binary sequences. By computer simulations, we evaluate BER performances of asynchronous DS/CDMA communication systems using the proposed sequences.
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页码：141 / 144
页数：4
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