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A novel re-initialization technique for CMA in the presence of channel noise

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conference contribution
posted on 18.01.2010, 13:52 by Sangarapillai Lambotharan, A.G. Constantinides, Jonathon Chambers, K. Skowratananont
The error surface associated with the constant modulus algorithm (CMA) is multimodel. Therefore, an equalizer adapted with CMA has the potential to converge to a local minimum that has large noise amplification. A technique is, therefore, proposed based upon a solution of linear and quadratic equations to re-initialise the equalizer parameters. Linear equations are obtained from the fact that the retrieved transmitted signal with various delays which correspond to different minima are uncorrelated. The quadratic equations are obtained from the knowledge of the transmitted signal power. Simulations are included to demonstrate the robustness of this new scheme

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Citation

LAMBOTHARAN, S. ... et al, 1998. A novel re-initialization technique for CMA in the presence of channel noise. IN: Conference Record of the Thirty-Second Asilomar Conference on Signals, Systems and Computers, Pacific Grove, California, 1st-4th November 1998, Vol. 1, pp. 489-492

Publisher

© IEEE

Version

VoR (Version of Record)

Publication date

1998

Notes

This is a conference paper [© IEEE]. It is also available at: http://ieeexplore.ieee.org/ Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.

ISBN

0780351487

Language

en

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