Log-Likelihood-Ratio Ordered Successive Interference Cancellation in Multi-User, Multi-Mode MIMO Systems

被引：5
|
作者：
Chun, Young Jin [1 ]
Kim, Sang Wu [1 ]
机构：
[1] Iowa State Univ, Dept Elect & Comp Engn, Ames, IA 50011 USA
来源：
IEEE COMMUNICATIONS LETTERS | 2008年 / 12卷 / 11期
关键词：
Multi-user MIMO; successive interference cancellation; log-likelihood ratio;
D O I：
10.1109/LCOMM.2008.080986
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
Log-likelihood-ratio (LLR) ordered successive interference cancellation (SIC) scheme is analyzed in multi-user, multi-mode, multi-input multi-output (MIMO) systems in which each user may choose between two operation modes: spatial multiplexing or beamforming. The main idea is to detect and cancel the user signal in order of LLR which provides a posteriori information about the reliability of detection. The simulation results indicate that LLR-ordered SIC provides 1 similar to 3 dB gain over the conventional SNR-ordered SIC in multiuser MIMO system and the gain increases with increasing number of users.
引用
收藏
页码：837 / 839
页数：3
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