Iterative multiuser receiver/decoders with enhanced variance estimation

被引：0
|
作者：
Kettunen, K [1 ]
机构：
[1] Helsinki Univ Technol, Lab Telecommun Technol, FIN-02015 HUT, Finland
来源：
1999 IEEE 49TH VEHICULAR TECHNOLOGY CONFERENCE, VOLS 1-3: MOVING INTO A NEW MILLENIUM | 1999年
关键词：
D O I：
暂无
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 paper we study the impact of variance estimation on a receiver, where the soft information provided by the channel decoder is utilized in the multiuser detection. Specifically, we consider a receiver structure that resembles the structure of an iterative decoder for a serially concatenated code, but where the inner constituent decoder is replaced by an interference cancellation (IC) unit. The system performance with three different variance estimator methods is studied through numerical simulations. The results show that the variance estimation method has a great impact on the receiver performance especially in the case, where the different users are received with different powers.
引用
收藏
页码：2318 / 2322
页数：5
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