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Performance of the Space-Time Block Coded DS-CDMA Uplink Employing Soft-Output ACO-Aided Multiuser Space-Time Detection and Iterative Decoding

Xu, Chong, El-Hajjar, Mohammed, Maunder, Robert G., Yang, Lie-Liang and Hanzo, Lajos (2010) Performance of the Space-Time Block Coded DS-CDMA Uplink Employing Soft-Output ACO-Aided Multiuser Space-Time Detection and Iterative Decoding At 2010 IEEE 71st Vehicular Technology Conference (VTC 2010-Spring), Taiwan, Province of China. 16 - 19 May 2010. , pp. 1-5. (doi:10.1109/VETECS.2010.5493768).

Record type: Conference or Workshop Item (Paper)

Abstract

Abstract—In this treatise we propose a three-stage twin-transmit-antenna assisted MultiUser (MU) Direct Sequence Code-Division Mulitple Access (DS-CDMA) system employing both a Unitary Rate Code (URC) and a Recursive Systematic Code (RSC) to carry out iterative turbo detection. A Space-Time Block Code (STBC) is used to provide second-order diversity gain in conjunction with a novel soft-output (SO) ant-colony optimization (ACO) based space-time multiuser detection (ST/MUD) algorithm, which is capable of carrying out STBC decoding, while mitigating the MultiUser Interference (MUI) and generating the Log-Likelihood Ratios (LLR) for facilitating the iterative exchange of extrinsic informa- tion between the URC and RSC decoders of each user. With aid of the above mentioned state-of-the-art techniques, the proposed system becomes capable of approaching the performance of the single-user system within about 0.5dB, when K = 32 users are supported with the aid of 31-chip Gold-codes.

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Published date: May 2010
Venue - Dates: 2010 IEEE 71st Vehicular Technology Conference (VTC 2010-Spring), Taiwan, Province of China, 2010-05-16 - 2010-05-19
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 271169
URI: http://eprints.soton.ac.uk/id/eprint/271169
ISBN: 978-1-4244-2519-8
PURE UUID: 21efdab8-2ecd-4e7b-9dbd-2afb3a3af42c
ORCID for Mohammed El-Hajjar: ORCID iD orcid.org/0000-0002-7987-1401
ORCID for Robert G. Maunder: ORCID iD orcid.org/0000-0002-7944-2615
ORCID for Lie-Liang Yang: ORCID iD orcid.org/0000-0002-2032-9327

Catalogue record

Date deposited: 25 May 2010 21:22
Last modified: 18 Jul 2017 06:46

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Contributors

Author: Chong Xu
Author: Mohammed El-Hajjar ORCID iD
Author: Robert G. Maunder ORCID iD
Author: Lie-Liang Yang ORCID iD
Author: Lajos Hanzo

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