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Sociedade Brasileira de Telecomunicações


On Indoor Coverage Models for Industrial Facilities

It is shown analytical and measurement results in order to compare five different indoor path loss propagation models in industrial environments: one-slope...

SBrT 2010


A New Model for VoIP Traffic Generation

In this work a new model for VoIP traffic generation is proposed. The innovation of this model consists in modeling the user behavior instead of the aggreg...

SBrT 2010


Speaker Recognition Using Dynamic Features and The Null Space Combination of Classifiers in The Sub-band Domain

This paper investigates the inclusion of dynamic features in the input vectors used by the multiple classification scheme which employ the null space to co...

SBrT 2010


Cyclotomic Basis for Computing the Discrete Fourier Transform

This paper presents a new fast algorithm for computing an N-point discrete Fourier transform. The algorithm meets the Heideman multiplicative complexity low...

SBrT 2010


Demonstrating the security vulnerabilities of the Identity-based Key Management scheme for MANETs

The next generation of mobile communications will merge the well-known infrastructured wireless networks and the infrastructureless mobile ad hoc networks....

SBrT 2010