A New Choice of Penalty Function for Robust Multiuser Detection Based on M--Estimation

A.R. Sharafat | Babak Seyfe

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URL :   http://research.shahed.ac.ir/WSR/WebPages/Report/PaperView.aspx?PaperID=85312
Date :  2005/02/02
Publish in :    IEEE Transactions on Communications

Link :  http://dx.doi.org/10.1109/TCOMM.2004.842001
Keywords :Function, Robust

Abstract :

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In this letter, we propose a new robust MUD, called /spl alpha/ detector, for non-Gaussian noise. We consider the Gaussian-mixture model for non-Gaussian or impulsive noise. Our technique outperforms the decorrelator and the minimax detectors in highly impulsive noise. The proposed method uses a parametric cost function, where the parameter /spl alpha/ is selected using the difference between the asymptotic variance of estimation error of the /spl alpha/ detector and that of the minimax detector.