Channel estimation for synchronous DS-CDMA downlink

被引：0

作者：

Weiss, AJ ^{[1
]}

Friedlander, B ^{[1
]}

机构：

[1] Tel Aviv Univ, Dept Elect Syst Engn, IL-69978 Tel Aviv, Israel

来源：

NINTH IEEE SIGNAL PROCESSING WORKSHOP ON STATISTICAL SIGNAL AND ARRAY PROCESSING, PROCEEDINGS | 1998年

关键词：

D O I：

10.1109/SSAP.1998.739390

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：

Synchronous code-division multiple-access (CDMA) techniques possess intrinsic protection against co-channel interference due to the orthogonal spreading codes used. However in the presence of multipath the signals lose their orthogonality property leading to increased cross correlation. In these cases channel estimation may be needed in order to improve the detection of the desired symbols. We propose a subspace based algorithm for blind channel estimation of a synchronous CDMA down link. We compare the channel estimation accuracy with the Cramer Rao bound and we show that the estimation accuracy can be increased considerably using a decision feedback approach.

引用

页码：284 / 287

页数：4