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An Improved Ordering Method for MIMO Signal Detection Using QR Decomposition and Successive Interference Cancellation  

Bak, Sang-Hyun (연세대학교 원주캠퍼스 디지털통신연구실)
Kim, Jae-Kwon (연세대학교 원주캠퍼스 디지털통신연구실)
Yang, Won-Young (중앙대학교 전자전기공학부)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.34, no.10C, 2009 , pp. 1010-1015 More about this Journal
Abstract
In this paper, we propose a novel detection ordering technique for MIMO signal detection methods based on QR decomposition and successive interference cancellation (SIC). Recently, new signal detection methods for spatially multiplexed (SM) MIMO systems were proposed, where all the constellation points are tried as the first layer symbol, and the remaining layer symbols are estimated via SIC, producing candidate vectors. Finally, the ML metric values are calculated for the candidate vectors, that are again used to select the best symbol vector. It was also shown that the ordering method in the conventional V-BLAST is not suitable to these signal detection methods. In this paper, we propose a novel ordering method, and we show via computer simulations that the proposed ordering method improves the error performance.
Keywords
신호검출;공간다중화 MIMO;순차적 간섭제거;
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