Presentation 2005/2/25
An Combined MMSE-ML Multiuser Detection Scheme for STBC-OFDM
Anh Tuan LE, Xuan Nam TRAN, Tadashi FUJINO,
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Abstract(in English) In this paper, we propose a combined minimum mean square error (MMSE) and maximum likelihood (ML) multiuser detection scheme for space-time block coded orthogonal frequency division multiplexing (STBC-OFDM) which has improved performance but with low complexity. In particular, we propose a reduced complexity ML post-detection (ML-PDP) scheme which can correct erroneously estimated bits from the outputs of MMSE multiuser detection. The proposed ML-PDP scheme performs sequential search to detect a predefined number of bits with higher probability of error and then uses ML detection to correct them. Upon controlling the number of corrected bits it is possible to balance the system performance with complexity associated with the ML-PDP. We show that significantly improved performance can be achieved over MMSE-MUD at the cots of only a small additional complexity.
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Keyword(in English) space-time code / transmit diversity / OFDM / multipath fading / multiuser detection
Paper # WBS2004-137,A・P2004-318,RCS2004-405,MoMuC2004-188,MW2004-315
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Conference Information
Committee MoMuC
Conference Date 2005/2/25(1days)
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Language ENG
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) An Combined MMSE-ML Multiuser Detection Scheme for STBC-OFDM
Sub Title (in English)
Keyword(1) space-time code
Keyword(2) transmit diversity
Keyword(3) OFDM
Keyword(4) multipath fading
Keyword(5) multiuser detection
1st Author's Name Anh Tuan LE
1st Author's Affiliation Department of Information and Communication Engineering The University of Electro-Communications()
2nd Author's Name Xuan Nam TRAN
2nd Author's Affiliation Department of Information and Communication Engineering The University of Electro-Communications
3rd Author's Name Tadashi FUJINO
3rd Author's Affiliation Department of Information and Communication Engineering The University of Electro-Communications
Date 2005/2/25
Paper # WBS2004-137,A・P2004-318,RCS2004-405,MoMuC2004-188,MW2004-315
Volume (vol) vol.104
Number (no) 683
Page pp.pp.-
#Pages 6
Date of Issue