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On multi-user EXIT chart analysis aided turbo-detected MBER beamforming designs

Tan, S., Chen, S. and Hanzo, L. (2008) On multi-user EXIT chart analysis aided turbo-detected MBER beamforming designs IEEE Transactions on Wireless Communications, 7, (1), pp. 314-323.

Record type: Article


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 20?. Index Terms—Minimum bit error rate, beamforming, multiuser detection, soft interference cancellation, iterative processing, EXIT chart.

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Published date: January 2008
Organisations: Southampton Wireless Group


Local EPrints ID: 265042
PURE UUID: 23290a0f-628d-46e2-8100-da619954eb79

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Date deposited: 17 Jan 2008 10:01
Last modified: 18 Jul 2017 07:30

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

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