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MBER Space-Time Decision Feedback Equalization assisted Multiuser Detection for Multiple Antenna Aided SDMA Systems

MBER Space-Time Decision Feedback Equalization assisted Multiuser Detection for Multiple Antenna Aided SDMA Systems
MBER Space-Time Decision Feedback Equalization assisted Multiuser Detection for Multiple Antenna Aided SDMA Systems
This paper proposes a space-time decision feedback equalization (ST-DFE) assisted multiuser detection (MUD) scheme for multiple receiver antenna aided space division multiple access systems. A minimum bit error rate (MBER) design is invoked for the MUD, which is shown to be capable of improving the achievable bit error rate performance and enhancing the attainable system capacity over that of the standard minimum mean square error (MMSE) design. An adaptive implementation of the MBER ST-DFE assisted MUD is proposed using a stochastic gradient-based least bit error rate algorithm, which is demonstrated to consistently outperform the classical least mean square (LMS) algorithm, while achieving a lower computational complexity than the LMS algorithm for the binary signalling scheme. Our simulation results demonstrate that the MBER ST-DFE assisted MUD is more robust to channel estimation errors as well as to potential error propagation imposed by decision feedback errors, compared to the MMSE ST-DFE assisted MUD. Index Terms—Decision feedback equalizer, minimum bit error rate, minimum mean square error, multiple antennas, multipleinput multiple-output, multiuser detection, space-division multiple access, space-time processing.
1053-587X
3090-3098
Chen, S.
ac405529-3375-471a-8257-bda5c0d10e53
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
Livingstone, A.
9899a7a8-8517-4b86-9d15-cd52d57efbfc
Chen, S.
ac405529-3375-471a-8257-bda5c0d10e53
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
Livingstone, A.
9899a7a8-8517-4b86-9d15-cd52d57efbfc

Chen, S., Hanzo, L. and Livingstone, A. (2006) MBER Space-Time Decision Feedback Equalization assisted Multiuser Detection for Multiple Antenna Aided SDMA Systems. IEEE Transactions on Signal Processing, 54 (8), 3090-3098.

Record type: Article

Abstract

This paper proposes a space-time decision feedback equalization (ST-DFE) assisted multiuser detection (MUD) scheme for multiple receiver antenna aided space division multiple access systems. A minimum bit error rate (MBER) design is invoked for the MUD, which is shown to be capable of improving the achievable bit error rate performance and enhancing the attainable system capacity over that of the standard minimum mean square error (MMSE) design. An adaptive implementation of the MBER ST-DFE assisted MUD is proposed using a stochastic gradient-based least bit error rate algorithm, which is demonstrated to consistently outperform the classical least mean square (LMS) algorithm, while achieving a lower computational complexity than the LMS algorithm for the binary signalling scheme. Our simulation results demonstrate that the MBER ST-DFE assisted MUD is more robust to channel estimation errors as well as to potential error propagation imposed by decision feedback errors, compared to the MMSE ST-DFE assisted MUD. Index Terms—Decision feedback equalizer, minimum bit error rate, minimum mean square error, multiple antennas, multipleinput multiple-output, multiuser detection, space-division multiple access, space-time processing.

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Published date: August 2006
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 262864
URI: https://eprints.soton.ac.uk/id/eprint/262864
ISSN: 1053-587X
PURE UUID: 31e419cd-a079-49ef-a32d-100663c6f8b8
ORCID for L. Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

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Date deposited: 24 Jul 2006
Last modified: 06 Jun 2018 13:14

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Contributors

Author: S. Chen
Author: L. Hanzo ORCID iD
Author: A. Livingstone

University divisions

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