A Stabilized Multichannel Fast RLS Algorithm for Adaptive Transmultiplexer Receivers

NCUIR > College of Electrical Engineering & Computer Science > Graduate Institute of Communication Engineering > journal & Dissertation > Item 987654321/29069

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/29069

Title:	A Stabilized Multichannel Fast RLS Algorithm for Adaptive Transmultiplexer Receivers
Authors:	Chang,DC;Chiu,HC
Contributors:	通訊工程研究所
Keywords:	FILTERBANK TRANSCEIVERS;PERFECT RECONSTRUCTION;DESIGN;SYSTEM;BANK;CHANNELS;PHASE
Date:	2009
Issue Date:	2010-06-29 20:12:33 (UTC+8)
Publisher:	中央大學
Abstract:	The transmultiplexer (TMUX) system has been studied for its application to multicarrier communications. The channel impairments including noise, interference, and distortion draw the need for adaptive reconstruction at the TMUX receiver. Among possible adaptive methods, the recursive least squares (RLS) algorithm is appealing for its good convergence rate and steady state performance. However, higher computational complexity due to the matrix operation is the drawback of utilizing RLS. A fast RLS algorithm used for adaptive signal reconstruction in the TMUX system is developed in this paper. By using the polyphase decomposition method, the adaptive receiver in the TMUX system can be formulated as a multichannel filtering problem, and the fast algorithm is obtained through the block Toeplitz matrix structure of received signals. In addition to the reduction of complexity, simulation results show that the adaptive TMUX receiver has a convergence rate close to that of the standard RLS algorithm and the performance approaches the minimum mean square error solution.
Relation:	CIRCUITS SYSTEMS AND SIGNAL PROCESSING
Appears in Collections:	[Graduate Institute of Communication Engineering] journal & Dissertation

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