Desconvolução autodidata concorrente para equalização de canais de comunicações

AUTOR(ES)
DATA DE PUBLICAÇÃO

2001

RESUMO

The Constant Modulus Algorithm {CMA) is recognized as the most widely used algorithm in blind channel equalization practice. However, the CMA cost function exhibits local minima, which often leads to ill-convergence. This thesis proposes the Concurrent Equalizer, in which a Least Mean Square (LMS) equalizer operates cooperatively with a CMA equalizer, controlled through a non-linear link that depends on the system a priori state. Simulation results using M-QAM signalling have shown that the Concurrent Equalizer presents a much lower sensitivity to local minima than the CMA approach

ASSUNTO(S)

convoluções (matematica) teoria da comunicação estatistica telecomunicações comunicações digitais equalizadores (eletronica)

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