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A QOC Signal Detection Method for Spatially Multiplexed MIMO Systems  

Im, Tae-Ho (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.9C, 2010 , pp. 771-777 More about this Journal
Abstract
This paper proposes a new signal detection method, called QR-OSIC with Candidates (QOC) method, for spatially multiplexed multiple input multiple output (MIMO) systems. By using the ordered successive interference cancellation (OSIC) algorithm and the maximum likelihood (ML) metric, the proposed method achieves near-ML performance without requiring a large number of candidates. Although the proposed method can be used for both hard and soft decoding systems, it is especially useful for soft decoding systems since the LLR values for all the bits can be efficiently computed without using LLR estimation. The proposed method is also suitable for VLSI implementation since it leads to fixed throughput system.
Keywords
MIMO; MMSE-OSIC; K-Best; QOC; Signal Detection;
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