Performance of the Space-Time Block Coded DS-CDMA Uplink Employing Soft-Output ACO-Aided Multiuser Space-Time Detection and Iterative Decoding
Performance of the Space-Time Block Coded DS-CDMA Uplink Employing Soft-Output ACO-Aided Multiuser Space-Time Detection and Iterative Decoding
In this treatise we propose a three-stage twin-transmit-antenna assisted MultiUser (MU) Direct Sequence Code-Division Multiple 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 information 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.
978-1-4244-2519-8
Xu, Chong
acdb0d0f-a2a4-406f-b206-5abfe2228007
El-Hajjar, Mohammed
3a829028-a427-4123-b885-2bab81a44b6f
Maunder, Robert G.
76099323-7d58-4732-a98f-22a662ccba6c
Yang, Lie-Liang
ae425648-d9a3-4b7d-8abd-b3cfea375bc7
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
May 2010
Xu, Chong
acdb0d0f-a2a4-406f-b206-5abfe2228007
El-Hajjar, Mohammed
3a829028-a427-4123-b885-2bab81a44b6f
Maunder, Robert G.
76099323-7d58-4732-a98f-22a662ccba6c
Yang, Lie-Liang
ae425648-d9a3-4b7d-8abd-b3cfea375bc7
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
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.
2010 IEEE 71st Vehicular Technology Conference (VTC 2010-Spring), , Taipei, Taiwan.
16 - 19 May 2010.
(doi:10.1109/VETECS.2010.5493768).
Record type:
Conference or Workshop Item
(Paper)
Abstract
In this treatise we propose a three-stage twin-transmit-antenna assisted MultiUser (MU) Direct Sequence Code-Division Multiple 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 information 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), , Taipei, Taiwan, 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
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Date deposited: 25 May 2010 21:22
Last modified: 18 Mar 2024 03:21
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