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Sociedade Brasileira de Telecomunicações

2013 - XXXI Simpósio Brasileiro de Telecomunicações



Pre-FFT Adaptive Spatial Filter Applied to OFDM Systems

This paper proposes an adaptive spatial filter scheme in time-domain (pre-FFT), aimed to improve the performance and the capacity of OFDM systems. This strat...

SBrT 2013


Eletromagnetic Survey for Measurement of the Concentration of Aqueous Substances

This paper shown a analysis of concentration of aqueous substances through of variation of eletric permissivity. In order to investigate this variation of ...

SBrT 2013


Modelagem Tensorial Para Estimação de Parâmetros em Arranjos L-shape de Antenas Vetoriais

This paper presents a tensorial approach for the modeling and estimation of parameters in L-shape vector antenna arrays. Making use of the PARAFAC decomposit...

SBrT 2013


LR-Aided Detection for Large-MIMO System via Ant Colony Optimisation

In this work heuristic ant colony optimisation (ACO) procedure is deployed in conjunction with lattice reduction (LR) technique aiming to improve the perfo...

SBrT 2013


Remote Monitoring of Electrocardiogram Signals Transmitted in a ZigBee Network

This work proposes a remote monitoring system of ECG signals. The ECG signal is generated with an algorithm called ecgsyn, and it is transmitted in a real ...

SBrT 2013