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Sociedade Brasileira de Telecomunicações


Mobile Station Location using Genetic Algorithm Optimized Radio Frequency Fingerprinting

Radio Frequency Fingerprinting estimates the mobile station location by comparing a measured radio frequency fingerprint with a set of previously collected...

SBrT 2010


A Traffic Policing Mechanism for Wimax Systems Based on Multifractal Modeling

In this paper, we analyze the queueing performance in terms of loss rate of an OFDM (Orthogonal FrequencyDivision Multiplexing)/TDMA(Time Division Multiplex...

SBrT 2010


Providing Higher Entropy Cryptographic Keys by the Use of Biometrics

In this paper modifications are investigated to a previously introduced Key Regeneration system used to obtain cryptographic keys from biometric data, spec...

SBrT 2010


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


On the Impact of Non-Linear High Power Amplifiers on Coded OFDM

The high peak-to-average power ratio (PAPR) is one of the main disadvantages of OFDM systems, which reduces the transmission efficiency with non-linear pow...

SBrT 2010