Iterative interference cancellation and decoding using a soft cancellation factor for DS-CDMA

被引：0
|
作者：
Howlader, MMK [1 ]
Woerner, BD [1 ]
机构：
[1] Virginia Polytech Inst & State Univ, Bradley Dept ECPE, Mobile & Portable Radio Res Grp, Blacksburg, VA 24061 USA
来源：
2000 IEEE 51ST VEHICULAR TECHNOLOGY CONFERENCE, PROCEEDINGS, VOLS 1-3 | 2000年
关键词：
D O I：
暂无
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
We consider a DS-CDMA system that employs both partial parallel interference cancellation (PIC) and convolutional coding. Information is shared between the operations of interference cancellation and decoding in an iterative manner, using log likelihood ratios (LLR) of the estimated coded symbols. We investigate the performance of this system for both synchronous and asynchronous CDMA systems, and for both equal and unequal signal powers. Previous work has demonstrated the improved performance of partial parallel interference cancellation in which the interference estimates are weighted by a soft, cancellation factor (SCF). We examine the best choice of the SCF for optimizing the combined performance of interference cancellation and coding.
引用
收藏
页码：2076 / 2080
页数：5
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