Low-Complexity Soft-Ml Detection Algorithm For Modified-Dcm In Wimedia Uwb Systems
IEICE TRANSACTIONS ON COMMUNICATIONS(2013)
摘要
This letter proposes a low-complexity soft-detection algorithm for modified dual-carrier modulation (MDCM) in WiMedia ultra-wideband (UWB) systems. In order to reduce the complexity of soft-output maximum-likelihood detection (soft-MLD), which gives the optimal performance for MDCM symbols, the proposed algorithm utilizes the following three methods: real/imaginary separation, multiplierless distance calculation, and candidate set reduction. Through these methods, the proposed algorithm reduces the complexity of soft-MLD by 97%, while preventing the deterioration of its optimality. The performance of the proposed algorithm is demonstrated by simulations of 640-1024 Mbps transmission modes of the latest Release 1.5 standard of the WiMedia UWB.
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关键词
modified dual-carrier modulation (MDCM), soft-detection, soft-output maximum-likelihood detection (soft-MLD), WiMedia UWB
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