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Iterative Soft Interference Cancellation Aided Minimum Bit Error Rate Uplink Receiver Beamforming

Tan, S., Xu, L., Chen, S. and Hanzo, L. (2006) Iterative Soft Interference Cancellation Aided Minimum Bit Error Rate Uplink Receiver Beamforming At IEEE VTC'06 (Spring), Australia. 07 - 10 May 2006. , pp. 17-21.

Record type: Conference or Workshop Item (Paper)

Abstract

Iterative multiuser receivers constitute an effective solution for transmission over Multiple Access Interference (MAI) infested channels, when invoking a combined multiuser detector and channel decoder. Most reduced-complexity methods in this area use the Complex-valued Minimum Mean Squared Error (CMMSE) Multiuser Detector (MUD). Since the desired output of BPSK systems is real-valued, minimizing the Mean Square Error (MSE) between the beamformer’s desired output and the real part of the beamformer output has the potential of significantly improving the attainable Bit Error Rate (BER) performance. We refer to this MMSE design as the Real-valued MMSE (RMMSE) receiver. In this paper, we explore a new Soft-Input Soft-Output (SISO) interference cancellation multiuser detection algorithm based on the novel Minimum BER (MBER) criterion. We demonstrate that the MBER turbo receiver outperforms both the CMMSE and the RMMSE algorithms, particularly in so-called ‘overloaded’ beamforming systems, where the number of receiver antennas is lower than the number of users supported.

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More information

Published date: 2006
Additional Information: Event Dates: 7-10 May 2006
Venue - Dates: IEEE VTC'06 (Spring), Australia, 2006-05-07 - 2006-05-10
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 262572
URI: http://eprints.soton.ac.uk/id/eprint/262572
PURE UUID: ff031bd7-d72d-4706-9ec2-135c03248953

Catalogue record

Date deposited: 12 May 2006
Last modified: 18 Jul 2017 08:50

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Contributors

Author: S. Tan
Author: L. Xu
Author: S. Chen
Author: L. Hanzo

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