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An Efficient Soft-Output MIMO Signal Detection Method Based on Multiple Channel Ordering Technique and Its VLSI Implementation  

Im, Tae-Ho (중앙대학교 전자전기공학부 디지털통신연구실)
Yu, Sung-Wook (중앙대학교 전자전기공학부 디지털통신연구실)
Kim, Jae-Kwon (연세대학교 원주캠퍼스 디지털통신연구실)
Cho, Yong-Soo (중앙대학교 전자전기공학부 디지털통신연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.35, no.12C, 2010 , pp. 1044-1051 More about this Journal
Abstract
In this paper, we propose an efficient soft-output signal detection method for spatially multiplexed multiple input multiple output (MIMO) systems. The proposed method is based on the ordered successive interference cancellation (OSIC) algorithm, but it significantly improves the performance of the original OSIC algorithm by solving the error propagation problem. The proposed method combines this enhanced OSIC (ESIC) algorithm with a multiple ordering technique in a very efficient way. As a result, the log likelihood ratio (LLR) values can be computed by using a very small set of candidate symbol vectors. The proposed method has been implemented with a $0.13{\mu}m$ CMOS technology for a $4{\times}4$ 16-QAM MIMO system. The simulation and implementation results show that the proposed detector provides a very good solution in terms of performance and hardware complexity.
Keywords
IMO; OSIC; K-Best; MESIC;
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