Use este identificador para citar ou linkar para este item: http://www.repositorio.ufc.br/handle/riufc/3951
Título: Decision directed adaptive blind equalization based on the constant modulus algorithm
Autor(es): Fernandes, Carlos Alexandre Rolim
Favier, Gérard
Mota, João César Moura
Palavras-chave: Teleinformática
Algoritmos
Data do documento: Jul-2007
Editor: Signal Processing
Citação: FERNANDES, C. A. R. ; FAVIER, G. ; MOTA, J. C. M. (2007)
Abstract: In this paper, new decision directed algorithms for blind equalization of communication channels are presented. These algorithms use informations about the last decided symbol to improve the performance of the constant modulus algorithm (CMA). The main proposed technique, the so called decision directed modulus algorithm (DDMA), extends theCMAto non-CM modulations.Assuming correct decisions, it is proved that the decision directed modulus (DDM) cost function has no local minima in the combined channel-equalizer system impulse response. Additionally, a relationship between theWiener and DDM minima is established. The other proposed algorithms can be viewed as modifications of the DDMA. They are divided into two families: stochastic gradient algorithms and recursive least squares (RLS) algorithms. Simulation results allow to compare the performance of the proposed algorithms and to conclude that they outperform well-known methods.
Descrição: FERNANDES, C. A. R. ; FAVIER, G. ; MOTA, J. C. M. Decision directed adaptive blind equalization based on the constant modulus algorithm. Signal Processing, v. 1, p. 333-346, jul. 2007.
URI: http://www.repositorio.ufc.br/handle/riufc/3951
ISSN: 0165-1684
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