Estimação de Parâmetros de Canais de Gilbert-Elliott

Igor Moreira, Cecilio Pimentel

DOI: 10.14209/sbrt.2013.50

Evento: XXXI Simpósio Brasileiro de Telecomunicações (SBrT2013)

Keywords: Finite-state Markovian channels fading parameters estimation error probability

Abstract

This paper compares three methods for estimating the parameters of class of finite state Markov channels, specifically the Gilbert Elliot channel (GEC), so as to approximate a discrete fading channel. For this, the method proposed by Wilhelmsson and Milstein and the Baum-Welch algorithm, already used in the literature, are compared with the minimization of the Kullback-Leibler divergence between two probability measures. The accuracy of the GEC obtained with each estimation technique is measured in terms of the autocorrelation function, the throughput of the Go-Back-N protocol and the probability of an unsuccessfully decoding of a block code.

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