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Sociedade Brasileira de Telecomunicações

2010 - VII International Telecommunications Symposium



User Cooperation Using Multiple Antennas

This paper proposes user cooperation strategy using multiple antennas technology (MIMO). In a first model we used a Code Division Multiple Access (CDMA) sy...

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


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


Comparison of the Performance of Rain Attenuation Prediction Methods for Terrestrial Links

This paper presents the results of a comparative tests between rain attenuation prediction methods for terrestrial links. To perform the tests, experimenta...

SBrT 2010


OFDM Point-to-Multipoint Links at ISM 5 GHz Band: Experimental and Analytical Results

It is developed a case study, unifying theoretical and practical aspects, concerning planning and implementation of orthogonal frequency division multiplex...

SBrT 2010