tailieunhanh - Báo cáo hóa học: "Iterative Refinement Methods for Time-Domain Equalizer Design"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Iterative Refinement Methods for Time-Domain Equalizer Design | Hindawi Publishing Corporation EURASIP Journal on Applied Signal Processing Volume 2006 Article ID 43154 Pages 1-12 DOI ASP 2006 43154 Iterative Refinement Methods for Time-Domain Equalizer Design Gliner Arslan 1 Biao Lu 2 Lloyd D. Clark 3 4 and Brian L. Evans5 1 Silicon Laboratories Corporate Headquarters 7000 West William Cannon Drive Austin TX 78735 USA 2 Schlumberger Sugar Land Product Center 110 Schlumberger Drive Sugar Land TX 77478 USA 3 Schlumberger Austin Systems Center 8311 N FM 620 Road Austin TX 78726 USA 4TICOM Geomatics 9130 Jollyville Road Austin TX 78759 USA 5 Department of Electrical and Computer Engineering The University of Texas Austin TX 78712-1084 USA Received 1 December 2004 Revised 23 May 2005 Accepted 2 August 2005 Commonly used time domain equalizer TEQ design methods have been recently unified as an optimization problem involving an objective function in the form of a Rayleigh quotient. The direct generalized eigenvalue solution relies on matrix decompositions. To reduce implementation complexity we propose an iterative refinement approach in which the TEQ length starts at two taps and increases by one tap at each iteration. Each iteration involves matrix-vector multiplications and vector additions with 2 X 2 matrices and two-element vectors. At each iteration the optimization of the objective function either improves or the approach terminates. The iterative refinement approach provides a range of communication performance versus implementation complexity tradeoffs for any TEQ method that fits the Rayleigh quotient framework. We apply the proposed approach to three such TEQ design methods maximum shortening signal-to-noise ratio minimum intersymbol interference and minimum delay spread. Copyright 2006 Guner Arslan et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. .

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