Decodificador de máxima verosimilitud asistida por procesado digital de señal

Abstract

This paper deals with the problem of ISI communications channels and the existing tradeoff between channel modeling and channel equalizers. We focus the problem of a TCM system with a 2/3 convolutional coder and PSK-8 signaling. The new scheme reported by the authors supports the weigthed likelihood decoder at every branch by a DSP channel model. This architecture shows a better performance than the classic equalizers both in robustness and resulting complexity.