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Sociedade Brasileira de Telecomunicações

2010 - VII International Telecommunications Symposium



Quantum Permanent Compromise Attack to Blum-Micali Pseudorandom Generator

This paper presents a quantum permanent compromise attack to the Blum-Micali pseudorandom generator whose security is based on the assumption of intractabil...

SBrT 2010


Comparative Analysis of PMD and PDL on DOP in Optical Communication Systems for NRZ, RZ and CSRZ Signals

This paper presents a numerical analysis of the dispersive effects of light polarization in optical fibers. This study analyzed the behavior of the degree ...

SBrT 2010


Performance of WHT-STC-OFDM in Mobile Frequency Selective Channel

High data rate systems usually employ Orthogonal Frequency Division Multiplexing and Space-Time Coding to improve the performance on a mobile time-variant ...

SBrT 2010


Node Deployment by Stochastic Point Processes in Wireless Sensor Networks

Node deployment plays an important role in the design of wireless sensor networks (WSNs). Many important properties such as coverage, connectivity, data fi...

SBrT 2010


A UWB Power Delay Profile Data Acquisition for Indoor Environments Using a Spectrum Analyser

This paper presents a measurement system for indoor characterization of UWB channels. The presented method uses a scalar network analyzer (SNA) or a spectr...

SBrT 2010