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Sociedade Brasileira de Telecomunicações

2010 - VII International Telecommunications Symposium

A Low-Cost Implementation of High-Order Square M-QAM Detection/Demodulation in a FPGA Device

This paper outlines a low-cost technique for detection/demodulation of high-order square M-ary quadrature amplitude modulation (M-QAM), M = 4, 16, 64, 256,...

SBrT 2010

Ambient Noise Classification for Automatic Speaker Identification

This paper proposes two methods for acoustic ambient noises classification. The classification is based on the Kurtosis coefficient and the Bhattacharyya d...

SBrT 2010

An Adequate Objective Performance Evaluation of Dirac Video Codec Compared to H.264/AVC

Dirac, a relevant new open wavelet-based video codec, has been released recently. The main contribution of this paper is an adequate performance evaluation...

SBrT 2010

Analysing on the Quality of Head Tomographic Images with Power Intensity Variation

Tomography is a non-invasive exam technique that provides a great amount of visual information of virtually inaccessible areas of the body. This paper anal...

SBrT 2010

Analysis of DOP in the Presence of PMD and PDL for RZ/RZ-DPSK Signals in High-Rate Optical Transmission Link

This work analyzed numerically the relationship between DOP, PMD and PDL dispersion effects in high-rate optical communication systems for differential pha...

SBrT 2010