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Sociedade Brasileira de Telecomunicações


Ascending chain of semigroup rings and encoding

Let B be any finite commutative ring with identity. · · · ⊂ B[X; 1ak Z0] · · · ⊂ B[X; a12 Z0] ⊂ B[X; a1 Z0], where a ∈ {2, 3, 5, 7, · · ·}, k ≥ 1, is the des...

SBrT 2010


Capacity of CSMA under Nakagami Fading

This paper investigates the throughput performance of carrier sense multiple access (CSMA) in a packet radio network and Nakagami fading environment. The app...

SBrT 2010


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 Robust MERRY Channel Shortening Technique for OFDM Systems in PLC Environment Corrupted by Impulsive Noise

This contribution introduces a robust version of the multicarrier equalization by restoration of redundance (MERY) algorithm for data communication through...

SBrT 2010


Microstrip Antennas Array with patch superconductor at High Temperature

New results and the analysis of the resonance frequency and pattern fields of microstrip antennas array, with superconductor patch for different very high ...

SBrT 2010