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TCM, TTCM, BICM and BICM-ID Assisted MMSE Multi-User Detected SDMA-OFDM Using Walsh-Hadamard Spreading

Jiang, M., Ng, S. X. and Hanzo, L. (2004) TCM, TTCM, BICM and BICM-ID Assisted MMSE Multi-User Detected SDMA-OFDM Using Walsh-Hadamard Spreading At VTC'04 (Spring), Italy. 17 - 19 May 2004. , pp. 1129-1133.

Record type: Conference or Workshop Item (Paper)


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. In this contribution 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), which constitute bandwidth efficient schemes that combine the functions of coding and modulation. Invoking the WHTS technique is capable of further improving 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.

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Published date: 2004
Additional Information: Event Dates: 17-19 May 2004
Venue - Dates: VTC'04 (Spring), Italy, 2004-05-17 - 2004-05-19
Organisations: Southampton Wireless Group


Local EPrints ID: 261584
PURE UUID: 2dc37c29-abf8-447e-a03c-a6a914033107

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Date deposited: 25 Nov 2005
Last modified: 18 Jul 2017 09:01

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Author: M. Jiang
Author: S. X. Ng
Author: L. Hanzo

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