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Sociedade Brasileira de Telecomunicações

2010 - VII International Telecommunications Symposium



A New Deblurring Algorithm for Textual Document Images

Documents digitalized by portable cameras or flatbed scanners may exhibit some blurred areas. Most deblurring algorithms are hard to implement and slow. Of...

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


An Innovation-Based Algorithm for Energy Conservation in Multihop Wireless Sensor Networks

We propose an energy-efficient algorithm for sensing a process f(x,y,t) using a multihop Wireless Sensor Network (WSN). The innovation-based algorithm aims ...

SBrT 2010


An Open Source HMM-based Text-to-Speech System for Brazilian Portuguese

Text-to-speech (TTS) is currently a mature technology that is used in many applications. Some modules of a TTS depend on the language and, while there are m...

SBrT 2010


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