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A low complexity subband adaptive equaliser for broadband MIMO channels

Bale, V. and Weiss, S. (2004) A low complexity subband adaptive equaliser for broadband MIMO channels. In: International Workshop on Spectral Methods and Multirate Signal Processing, 2004-09-11 - 2004-09-12.

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Abstract

This paper addresses trained adaptation of broadband multiple-input multiple-output (MIMO) equalisers operating in severely time-dispersive environments which result in slow convergence and poor performance for least mean squares (LMS) type algorithms. We present a subband approach, which enhances a normalised LMS (NLMS) convergence by prewhitening of the input signals and reduces its computational complexity. Equalisation based on the recursive least squares (RLS) algorithm in the time domain is prohibitive due to its high complexity, which can be drastically reduced by the subband approach to an extend such that the overall RLS cost for convergence may be much lower than the subband NLMS. The performance of the various systems is compared in simulations.

Item type: Conference or Workshop Item (Paper)
ID code: 38885
Keywords: low complexity, subband, adaptive equaliser, broadband, mimo channels, Electrical engineering. Electronics Nuclear engineering
Subjects: Technology > Electrical engineering. Electronics Nuclear engineering
Department: Faculty of Engineering > Electronic and Electrical Engineering
Depositing user: Pure Administrator
Date deposited: 02 Apr 2012 15:52
Last modified: 01 Feb 2019 18:18
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URI: https://strathprints.strath.ac.uk/id/eprint/38885
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