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학술지 QR-LRL Signal Detection for Spatially Multiplexed MIMO Systems
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저자
방승재, 박윤옥, 김재권
발행일
200810
출처
IEICE Transactions on Communications, v.E91-B no.10, pp.3383-3386
ISSN
0916-8516
출판사
일본, 전자정보통신학회 (IEICE)
DOI
https://dx.doi.org/10.1093/ietcom/e91-b.10.3383
초록
The performance of the ordered successive interference cancellation (OSIC) signal detection method is well known to depend on the successful detection of the first layer. In a previous work, in an effort to mitigate the error propagation effect, all the constellation points were tried as the first layer symbol, thereby achieving a better performance. In this letter, we show that the selection of the first layer impacts the error performance significantly, and based on the observation, we propose a novel signal detection method QR-LRL. In the proposed work, the least reliable layer (LRL) is chosen to be the first layer, which is shown to be the best choice in terms of noise enhancement in detecting the other layers. Also, we discuss Log Likelihood Ratio (LLR) computation when the proposed method is used. Computer simulations confirm the efficacy of the proposed method. Copyright © 2008 The Institute of Electronics.
키워드
MIMO, Signal detection, Spatial multiplexing
KSP 제안 키워드
Computer simulation(MC and MD), Detection Method, Error performance, First layer, MIMO system, Noise enhancement, Ordered successive interference cancellation, QR-LRL, error propagation, log likelihood ratio(LLR), proposed work