Fractionally sampled linear detectors for DS-CDMA

被引：0
|
作者：
Brown, DR [1 ]
Anair, DL [1 ]
Johnson, CR [1 ]
机构：
[1] Cornell Univ, Ithaca, NY 14853 USA
来源：
CONFERENCE RECORD OF THE THIRTY-SECOND ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS & COMPUTERS, VOLS 1 AND 2 | 1998年
关键词：
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
In this paper we analyze the performance of fractionally chip sampled linear multi-user detectors for Direct-Sequence CDMA communication systems. We consider a general DS-CDMA system model accounting for user asynchronism and frequency selective propagation channels. Analysis shows that FIR linear defectors with chip rate sampling cannot perfectly recover N or more users for a system with spreading gain N in the presence of frequency selective channel dynamics or user asynchronism. Drawing inspiration from fractionally spaced equalization, we propose the fractionally chip sampled receiver and show that a FIR linear detector may be able to perfectly recover greater than or equal to N users.
引用
收藏
页码：1873 / 1877
页数：5
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