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), 314-323.

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Description/Abstract

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.

Item Type: Article
ISSNs: 1536-1276
Divisions: Faculty of Physical Sciences and Engineering > Electronics and Computer Science > Comms, Signal Processing & Control
ePrint ID: 265042
Date Deposited: 17 Jan 2008 10:01
Last Modified: 27 Mar 2014 20:09
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/265042

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