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Sociedade Brasileira de Telecomunicações

2010 - VII International Telecommunications Symposium



Blind Source Separation in Polarization Division Multiplexed Optical Systems

Polarization division multiplexing systems is a promising technique, able to double the capacity of next generation optical communication systems. However,...

SBrT 2010


Empirical Investigation of Compressed Sensing applicability to Lossy Audio Compression

Compressive sampling is a new framework that exploits sparsity of a signal in a transform domain to perform sampling below the Nyquist rate. In this paper...

SBrT 2010


Analysis of multi-homed SCTP and delay-centric transmission for VoIP traffic in lossy networks

Nowadays a number of Internet access possibilities can be simultaneously available to fixed or mobile users. Adequate selection of the most appropriate comm...

SBrT 2010


Non-Parametric VSS-NLMS Algorithm With Control Parameter Based on the Error Correlation

The behavior of variable step-size least-mean-square (VSSLMS) algorithms is strongly affected by measurement noise. Thereby, aiming to maintain an adequate...

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