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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Transient and Steady-State Analysis of the Affine Combination of Two Adaptive Filters

Texto completo
Autor(es):
Candido, Renato [1] ; Silva, Magno T. M. [1] ; Nascimento, Vitor H. [1]
Número total de Autores: 3
Afiliação do(s) autor(es):
[1] Univ Sao Paulo, Dept Elect Syst Engn, Escola Politecn, Sao Paulo - Brazil
Número total de Afiliações: 1
Tipo de documento: Artigo Científico
Fonte: IEEE TRANSACTIONS ON SIGNAL PROCESSING; v. 58, n. 8, p. 4064-4078, AUG 2010.
Citações Web of Science: 34
Resumo

In this paper, we propose an approach to the transient and steady-state analysis of the affine combination of one fast and one slow adaptive filters. The theoretical models are based on expressions for the excess mean-square error (EMSE) and cross-EMSE of the component filters, which allows their application to different combinations of algorithms, such as least mean-squares (LMS), normalized LMS (NLMS), and constant modulus algorithm (CMA), considering white or colored inputs and stationary or nonstationary environments. Since the desired universal behavior of the combination depends on the correct estimation of the mixing parameter at every instant, its adaptation is also taken into account in the transient analysis. Furthermore, we propose normalized algorithms for the adaptation of the mixing parameter that exhibit good performance. Good agreement between analysis and simulation results is always observed. (AU)

Processo FAPESP: 08/04828-5 - Processamento de sinais para aplicações em áudio
Beneficiário:Vitor Heloiz Nascimento
Linha de fomento: Auxílio à Pesquisa - Regular