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. In, 2010 IEEE 71st Vehicular Technology Conference (VTC 2010-Spring), Taipei, TW, 16 - 19 May 2010. , 1-5. (doi:10.1109/VETECS.2010.5493768).
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.
|Item Type:||Conference or Workshop Item (Paper)|
|Digital Object Identifier (DOI):||doi:10.1109/VETECS.2010.5493768|
|Subjects:||Q Science > QA Mathematics > QA75 Electronic computers. Computer science|
|Divisions:||Faculty of Physical Sciences and Engineering > Electronics and Computer Science > Southampton Wireless Group
|Date Deposited:||25 May 2010 21:22|
|Last Modified:||31 Mar 2016 14:18|
India-UK advanced technology centre
Funded by: EPSRC (EP/J016640/1)
Led by: Lajos Hanzo
1 January 2012 to 30 June 2014
|Further Information:||Google Scholar|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
Actions (login required)