Adaptive step-size widely linear constant modulus algorithm for DS-CDMA receivers in nonstationary interference environments

被引：2

作者：

Lim, Jun-Seok

Jeon, Jae-Jin

Sung, Koeng-Mo

机构：

[1] Sejong Univ, Dept Elect Engn, Seoul 143747, South Korea

[2] SAMSUNG Elect Co, Suwon, South Korea

[3] Seoul Natl Univ, Seoul, South Korea

来源：

IEICE TRANSACTIONS ON COMMUNICATIONS | 2007年 / E90B卷 / 01期

关键词：

CMA; nonstationary MAI; widely lineat; adaptive step-size;

D O I：

10.1093/ietcom/e90-b.1.168

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 this Letter, we propose a new adaptive step-size widely linear constant modulus algorithm (CMA) in DS-CDMA systems especially for time-varying interference environments. The widely linear estimation enables CMA to produce better output signal to interference plus noise ratio (SINR) and the adaptive step-size tackles the time-varying interference environment effectively. The simulations confirm that the proposed algorithm shows better performance in a DS-CDMA system employing a BPSK modulation than other algorithms without use of widely linear processing.

引用

页码：168 / 170

页数：3

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