An accelerated constant modulus algorithm for space-time blind equalization
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Artigo de evento
Date
2015
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European Signal Processing Conference
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4
Authors
Silva M.T.M.
Gerken M.
Miranda M.D.
Gerken M.
Miranda M.D.
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Volume Title
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Abstract
© 2004 EUSIPCO.We address the problem of signal separation using space-time blind equalization techniques. A novel blind algorithm, denoted ACMA (Accelerated Constant Modulus Algorithm), is proposed. It minimizes the constant modulus cost function and is based on a tuner used in adaptive control that sets the second derivative ('acceleration ') of the coefficient estimates. Both the convergence speed and computational complexity of Multiuser ACMA lie between those of the Multiuser Constant Modulus and the Multiuser Shalvi-Weinstein algorithms. Some preliminary results show that the proposed algorithm presents a robust behavior with respect to global minima and tracking capability.
Description
Keywords
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Constant modulus algorithms , Constant modulus cost function , Convergence speed , Equalization techniques , Second derivatives , Shalvi-weinstein algorithms , Signal separation , Tracking capability