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Sociedade Brasileira de Telecomunicações

2010 - VII International Telecommunications Symposium



Implementation of PKIX-P2P with trust-based reputation using the JXTA platform

Nowadays, implement security in P2P systems is a great challenge. The possibility of building an infrastructure of public keys (PKI) operating in P2P envi...

SBrT 2010


Prediction-Based Coding of Speech Signals Using Multiscale Recurrent Patterns

This paper investigates the performance of the multidimensional multiscale parser (MMP) algorithm for speech coding. A new prediction-based scheme is cons...

SBrT 2010


Detection of Panoramic Takes in Soccer Videos Using Phase Correlation and Boosting

We propose an automatic engine for panoramic-take detection which relies on an algorithm based on phase correlation and boosting. The motion between two se...

SBrT 2010


Adaptive Beamforming for Antenna Arrays in Cellular Systems Based on a Duality Between Uplink and Downlink Channels

This paper presents a beamforming algorithm for antenna arrays attending to both power and signal-tointerference-plus-noise (SNIR) ratio constraints. The pr...

SBrT 2010


Mean Weight Behavior for the Generalized Subband Decomposition LMS Algorithm

This paper presents an improved stochastic model for the generalized subband decomposition least-mean-square (GSD-LMS) algorithm. This algorithm is used as...

SBrT 2010