MULTILEVEL CHAOS-BASED DS-CDMA SYSTEM WITH IMPROVED PERFORMANCE

被引：0

作者：

Vladeanu, Calin ^{[1
]}

Paleologu, Constantin ^{[1
]}

Marghescu, Ion ^{[1
]}

机构：

[1] Univ Politehn Bucuresti, Fac Elect Telecommun & Informat Theory, Dept Telecommun, Bucharest 061071, Romania

来源：

REVUE ROUMAINE DES SCIENCES TECHNIQUES-SERIE ELECTROTECHNIQUE ET ENERGETIQUE | 2008年 / 53卷 / 03期

关键词：

Chaos-based communications systems; DS-CDMA; Performance optimization; MAI; Quantized chaotic trajectories;

D O I：

暂无

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：

This paper investigates the chaos-based asynchronous direct sequence code-division multiple access (DS-CDMA) system performance optimization in accordance with spreading sequences set. The multiple access interference (MAI) power is estimated for conventional matched-filter receiver scheme, under the standard gaussian approximation (SGA) hypothesis, and minimized with respect to the auto-correlation function of the spreading sequences. The well-known family of optimum auto-correlation chaotic spreading sequences generated by the (n, t) - tailed shifts map is reconsidered. The present work intends to prove that not only binary quantized sequences are optimum, but also for any number of levels an optimum of the auto-correlation function exists.

引用

页码：319 / 328

页数：10

共 10 条

[1]

DEMICHELE LA, 2007, JOINT DESIGN DS UWB

[2] Chaotic complex spreading sequences for asynchronous DS-CDMA .1. System modeling and results [J].