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Joint channel estimation and multi-user detection for SDMA/OFDM based on dual repeated weighted boosting search

Joint channel estimation and multi-user detection for SDMA/OFDM based on dual repeated weighted boosting search
Joint channel estimation and multi-user detection for SDMA/OFDM based on dual repeated weighted boosting search
A joint channel estimation and Multi-User Detection (MUD) scheme is proposed for multi-user Multiple-Input Multiple-Output (MIMO) Space Division Multiple Access / Orthogonal Frequency-Division Multiplexing (SDMA/OFDM) systems. We design a Dual Repeated Weighted Boosting Search (DRWBS) scheme for joint channel estimation and MUD, which is capable of providing 'soft' outputs, directly fed to the Forward Error Correction (FEC) decoder. The proposed scheme reduces the complexity of the receiver, since it integrates the channel estimation and MUD into a single module and it forwards the Log-Likelihood Ratios (LLRs) to the channel decoder. It also provides an effective solution to the multi-user MIMO channel estimation and MUD problem in "rank-deficient" scenarios, when the number of users is higher than the number of receiver antennas. The simulation results demonstrate that the proposed scheme is capable of attaining a BER performace close to the ideal scenario of the Maximum Likelihood (ML) MUD associated with perfect channel knowledge.
Zhang, Jiankang
6add829f-d955-40ca-8214-27a039defc8a
Chen, Sheng
9310a111-f79a-48b8-98c7-383ca93cbb80
Mu, Xiaomin
3d578909-36ba-4b16-b703-2ef63532116c
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Zhang, Jiankang
6add829f-d955-40ca-8214-27a039defc8a
Chen, Sheng
9310a111-f79a-48b8-98c7-383ca93cbb80
Mu, Xiaomin
3d578909-36ba-4b16-b703-2ef63532116c
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1

Zhang, Jiankang, Chen, Sheng, Mu, Xiaomin and Hanzo, Lajos (2011) Joint channel estimation and multi-user detection for SDMA/OFDM based on dual repeated weighted boosting search. At IEEE International Conference on Communications IEEE International Conference on Communications, Japan. 05 - 09 Jun 2011. 5 pp.

Record type: Conference or Workshop Item (Other)

Abstract

A joint channel estimation and Multi-User Detection (MUD) scheme is proposed for multi-user Multiple-Input Multiple-Output (MIMO) Space Division Multiple Access / Orthogonal Frequency-Division Multiplexing (SDMA/OFDM) systems. We design a Dual Repeated Weighted Boosting Search (DRWBS) scheme for joint channel estimation and MUD, which is capable of providing 'soft' outputs, directly fed to the Forward Error Correction (FEC) decoder. The proposed scheme reduces the complexity of the receiver, since it integrates the channel estimation and MUD into a single module and it forwards the Log-Likelihood Ratios (LLRs) to the channel decoder. It also provides an effective solution to the multi-user MIMO channel estimation and MUD problem in "rank-deficient" scenarios, when the number of users is higher than the number of receiver antennas. The simulation results demonstrate that the proposed scheme is capable of attaining a BER performace close to the ideal scenario of the Maximum Likelihood (ML) MUD associated with perfect channel knowledge.

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More information

Published date: 5 June 2011
Additional Information: Event Dates: June 5-9, 2011
Venue - Dates: IEEE International Conference on Communications, Japan, 2011-06-05 - 2011-06-09
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 271899
URI: https://eprints.soton.ac.uk/id/eprint/271899
PURE UUID: 1f42f322-618e-4535-a3ee-037212eb292d
ORCID for Jiankang Zhang: ORCID iD orcid.org/0000-0001-5316-1711
ORCID for Lajos Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 12 Jan 2011 20:26
Last modified: 06 Sep 2017 16:33

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Contributors

Author: Jiankang Zhang ORCID iD
Author: Sheng Chen
Author: Xiaomin Mu
Author: Lajos Hanzo ORCID iD

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