Complexity Reduced Maximum Likelihood Detection for SDM-OFDM System

Yuanrun TENG  Katsuhiro NAITO  Kazuo MORI  Hideo KOBAYASHI  

IEICE TRANSACTIONS on Communications   Vol.E89-B    No.7    pp.2084-2087
Publication Date: 2006/07/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e89-b.7.2084
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
MIMO,  SDM-OFDM,  spatial diversity,  MLD,  

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This paper proposes two complexity reduced Maximum Likelihood Detection (MLD) methods for Space Division Multiplexing--OFDM (SDM-OFDM) system to exploit the spatial diversity so as to achieve the improved transmission quality. The proposed methods enable to outperform the other suboptimal detection methods and achieve near MLD performance with a significant reduction in calculation complexity. The various computer simulation results confirm that the proposed methods could realize the above targets and might be promising solution in practical systems.