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Sociedade Brasileira de Telecomunicações


An Optimal Path Stability Achieved By a Cross-Layer Proposal for Wireless Networks

This article presents an adaptive cross-layer solution for wireless networks. The main objective is to estimate the impact that different physical layer vari...

SBrT 2010


Distributed Autonomic Inference Machine for Wireless Sensor Networks

Wireless Sensor Networks (WSNs) offer data to Intelligence Ambient system, but, due the big number of sensor nodes and data heterogeneity, it can be overlo...

SBrT 2010


Improving VoIP Quality over Satellite Transmission with Dynamic Bandwidth

This work presents a dynamic bandwidth allocation scheme for DVB-RCS satellite standard aiming to avoid the conflict that arise when VoIP transmission with ...

SBrT 2010


A speech database for the study of Lombard effect in Brazilian Portuguese

The Lombard effect is related to the change in the way people speak in noisy environments in order to compensate the degradation of the audio signal. There...

SBrT 2010


Traffic Influence in Distributed Networks Using Cooperation and Set-Membership Filtering

This paper investigates the influence of data loss in the performance of cooperative adaptive filters in distributed networks. The algorithms analyzed are...

SBrT 2010