Iterative Soft Interference Cancellation Aided Minimum Bit Error Rate Uplink Receiver Beamforming
Iterative Soft Interference Cancellation Aided Minimum Bit Error Rate Uplink Receiver Beamforming
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.
17-21
Tan, S.
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Xu, L.
5802ae7f-4a22-4308-a6d8-8d8ae171553d
Chen, S.
9310a111-f79a-48b8-98c7-383ca93cbb80
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
2006
Tan, S.
6ee9d7e3-0cd0-41b9-805e-9c4edba790b6
Xu, L.
5802ae7f-4a22-4308-a6d8-8d8ae171553d
Chen, S.
9310a111-f79a-48b8-98c7-383ca93cbb80
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
Tan, S., Xu, L., Chen, S. and Hanzo, L.
(2006)
Iterative Soft Interference Cancellation Aided Minimum Bit Error Rate Uplink Receiver Beamforming.
IEEE VTC'06 (Spring), Melbourne, Australia.
07 - 10 May 2006.
.
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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Published date: 2006
Additional Information:
Event Dates: 7-10 May 2006
Venue - Dates:
IEEE VTC'06 (Spring), Melbourne, 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
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Date deposited: 12 May 2006
Last modified: 18 Mar 2024 02:33
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Contributors
Author:
S. Tan
Author:
L. Xu
Author:
S. Chen
Author:
L. Hanzo
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