A multistep linear prediction approach to blind asynchronous CDMA channel estimation and equalization

被引：13

作者：

Tugnait, JK ^{[1
]}

Li, TT ^{[1
]}

机构：

[1] Auburn Univ, Dept Elect & Comp Engn, Auburn, AL 36849 USA

来源：

IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS | 2001年 / 19卷 / 06期

基金：

美国国家科学基金会;

关键词：

blind estimation; DS-CDMA; ISI channels; multiaccess communication; multistep linear prediction; multiuser detection; multiuser interference; spread spectrum communication;

D O I：

10.1109/49.926365

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：

A multistep linear prediction approach is presented for blind channel estimation, multiuser interference (MUI) suppression, and detection of asynchronous short-code direct sequence code division multiple access signals in multipath channels, Only the spreading code of the desired user is assumed to be known; its transmission delay may be unknown. We exploit the recently proposed multistep linear prediction approach for blind multiple-input multiple-output channel estimation in conjunction with the structure imposed by the desired user's spreading code sequence. With the knowledge of the desired user's code sequence, only the second-order statistics of the data are needed under certain sufficient conditions on the underlying multiuser MIMO transfer function. Based on the desired user's channel estimate, a linear minimum mean square error filter is designed for simultaneous equalization and MUI suppression. Three illustrative simulation examples are presented.

引用

页码：1090 / 1102

页数：13

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