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Sociedade Brasileira de Telecomunicações

2010 - VII International Telecommunications Symposium



EGPRS2 Deployment as a Resource-saving Feature for Voice

EGPRS2 is part of the GERAN evolution standardized in 3GPP GERAN Release 7 and it allows higher throughput rates per timeslot due to the adoption of higher ...

SBrT 2010


Electromagnetic Interference Simulation of a Cell Phone in an Aircraft System Using Domain Decomposition Method

Laboratorial experiments to investigate the behavior of numerous embedded avionics installations to onboard electromagnetic interference (EMI) are extremel...

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


Enhancement of Data Rate for User Cooperation

In this paper, we propose a different scheme based on user cooperation diversity, in which we obtain an increase in the data rate. In particular, we presen...

SBrT 2010


Evaluation of the Effects of Co-Channel Interference on the Bit Error Rate for QPSK and M-QAM Modulations

In this paper, a performance analysis for QPSK, 16- QAM and 64-QAM, modulations in the presence of co-channel interference is made. At first, an expression...

SBrT 2010