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
收藏
页码：168 / 170
页数：3
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