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Sociedade Brasileira de Telecomunicações


Simple and Robust Method for OFDM Performance Improvement with Nonlinear Amplification

This work proposes a new technique to be used in orthogonal frequency division multiplexing (OFDM) systems subject to nonlinear power amplification, aiming t...

SBrT 2018


Bipartite HMM Model for Burst Errors Focused on the Generation of Gaps and Clusters

A new Hidden Markov Model (HMM) for burst errors is proposed. This model is based on a compact representation of the error sequence in terms of succeeding p...

SBrT 2013


HMM Modeling of Burst Error Channels by Particle Swarm Optimization of the Likelihood Function

This paper proposes a new strategy for fitting Hidden Markov Models to error processes of channels with memory. Our approach consists of obtaining the anal...

SBrT 2010


Burst-Error Statistics Obtained by ML Estimation of a New Structured Markov Channel Model

A new Markovian model (MM) for burst-error generation has been recently presented by the authors. This model is conveniently structured, with the double pu...

SBrT 2010


Rank codes – the State of Art

The State of Art for rank codes is presented. The theory and applications are considered.

SBrT 2010