On multi-user EXIT chart analysis aided turbo-detected MBER beamformer designs
On multi-user EXIT chart analysis aided turbo-detected MBER beamformer designs
This paper studies the mutual information transfer characteristics of a novel iterative soft interference cancellation (SIC) aided beamforming receiver communicating over both additive white Gaussian noise (AWGN) and multipath slow fading channels. Based on the extrinsic information transfer (EXIT) chart technique, we investigate the convergence behavior of an iterative minimum bit error rate (MBER) multiuser detection (MUD) scheme as a function of both the system parameters and channel conditions in comparison to the SIC aided minimum mean square error (SIC-MMSE) MUD. Our simulation results show that the EXIT chart analysis is sufficiently accurate for the MBER MUD. Quantitatively, a two-antenna system was capable of supporting up to K=6 users at Eb/N0 = 3dB, even when their angular separation was relatively low, potentially below 20º.
Minimum bit error rate, beamforming, multiuser detection, soft interference cancellation, iterative processing, EXIT chart
314-323
Tan, Shuang
e7f739b4-0aa4-494f-ac0d-cd000d10c576
Chen, Sheng
9310a111-f79a-48b8-98c7-383ca93cbb80
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
1 January 2008
Tan, Shuang
e7f739b4-0aa4-494f-ac0d-cd000d10c576
Chen, Sheng
9310a111-f79a-48b8-98c7-383ca93cbb80
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Tan, Shuang, Chen, Sheng and Hanzo, Lajos
(2008)
On multi-user EXIT chart analysis aided turbo-detected MBER beamformer designs.
IEEE Transactions on Wireless Communications, 7 (1), .
(doi:10.1109/TWC.2008.060534).
Abstract
This paper studies the mutual information transfer characteristics of a novel iterative soft interference cancellation (SIC) aided beamforming receiver communicating over both additive white Gaussian noise (AWGN) and multipath slow fading channels. Based on the extrinsic information transfer (EXIT) chart technique, we investigate the convergence behavior of an iterative minimum bit error rate (MBER) multiuser detection (MUD) scheme as a function of both the system parameters and channel conditions in comparison to the SIC aided minimum mean square error (SIC-MMSE) MUD. Our simulation results show that the EXIT chart analysis is sufficiently accurate for the MBER MUD. Quantitatively, a two-antenna system was capable of supporting up to K=6 users at Eb/N0 = 3dB, even when their angular separation was relatively low, potentially below 20º.
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Published date: 1 January 2008
Keywords:
Minimum bit error rate, beamforming, multiuser detection, soft interference cancellation, iterative processing, EXIT chart
Organisations:
Southampton Wireless Group
Identifiers
Local EPrints ID: 265042
URI: http://eprints.soton.ac.uk/id/eprint/265042
PURE UUID: 23290a0f-628d-46e2-8100-da619954eb79
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Date deposited: 17 Jan 2008 10:01
Last modified: 18 Mar 2024 02:34
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Contributors
Author:
Shuang Tan
Author:
Sheng Chen
Author:
Lajos Hanzo
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