NDLI: TCM, TTCM, BICM and BICM-ID assisted MMSE multi-user detected SDMA-OFDM using Walsh-Hadamard spreading

Content Provider	IEEE Xplore Digital Library
Author	Jiang, M. Ng, S.X. Hanzo, L.
Copyright Year	2004
Description	Author affiliation: Dept. of Electron. & Comput. Sci., Southampton Univ., UK (Jiang, M.; Ng, S.X.; Hanzo, L.)
Abstract	Space division multiple access (SDMA) aided orthogonal frequency division multiplexing (OFDM) systems assisted by efficient multi-user detection (MUD) techniques have recently attracted intensive research interests. Forward error correction (FEC) schemes and frequency-domain spreading techniques can be efficiently amalgamated with SDMA-OFDM systems for the sake of improving the achievable performance. A coded modulation (CM) assisted and minimum mean-square error (MMSE) multi-user detected SDMA-OFDM system combined with Walsh-Hadamard-transform-spreading (WHTS) across a number of subcarriers is proposed. The various CM schemes used are trellis coded modulation (TCM), turbo TCM (TTCM), bit-interleaved coded modulation (BICM) and iteratively decoded BICM (BICM-ID); they constitute bandwidth efficient schemes that combine the functions of coding and modulation. Invoking the WHTS technique makes possible further improvement of the average bit error rate (BER) performance of the CM-SDMA-OFDM system, since the bursty error effects imposed by the frequency-domain fading encountered are spread over the entire WHT block length, therefore increasing the chances of correcting the transmission errors by the CM decoders.
Starting Page	1129
Ending Page	1133
File Size	442584
Page Count	5
File Format	PDF
ISBN	0780382552
ISSN	15502252
DOI	10.1109/VETECS.2004.1389008
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-05-17
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Modulation coding Multiuser detection Forward error correction Bit error rate Error correction Multiaccess communication OFDM modulation Interleaved codes Iterative decoding Bandwidth
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Electrical and Electronic Engineering Computer Science Applications

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