XXXV Simpósio Brasileiro de Telecomunicações e Processamento de Sinais

This paper presents a new strategy for the mitigation of gaussian impulsive gated noise and double gated binary, using optimal linear systems theory applied to digital communication systems. For the analyzed impulsive noise models, the mean square errors were calculated through signal to noise ratio for different values of  and .

The performance of many parameter estimation algorithms used for direction finding and localization techniques depends on the accuracy of the signal covariance matrix estimate. For a small number of sensors, the commonly used sample covariance matrix estimation procedure may only provide a poor estimate of the unknown true covariance matrix. In...

Much is written about the process of conception of a communication system, considering the different types of modulation, transmission rates as well as the possible services in it Transported. However, the operationalization of the stages of conception of a system of Transmission (which is the fundamental for communication exist in the future) has...

MacWilliams-type identities for linear codes over Zl endowed with the Lee metric are identities relating the Lee weight distributions of codes and its duals. In this work we analyze the smallest instance: Z5, for which the existence of MacWilliamstype identities is an open problem. We show that when restricted to unidimensional codes over Z5,...

Event-Related Potentials (ERP) are biological electrical signals synchronized with sensory, cognitive or motor stimuli and measured by electroencephalographs (EEG). ERP technique allows non-invasive analysis of brain functions. Based on the results obtained by Soto [1], this work extracts ERP parameters using EEGLAB® and ERPLAB® tools based on Matlab®...

This paper presents the development, analyzis and comparison between elliptical and rectangular microstrip patch antennas in order to apply them to the 5th generation technology of wireless communication at the frequency of 28 GHz. The software High Frequency Structure Simulator (HFSS) was used for the simulations and the performance was analysed...

Neste trabalho apresentamos o desenvolvimento de um filtro de ressonância monolítico. O filtro projetado apresenta uma atenuação na ordem de 36 dB na frequência de ressonância de 1.5 GHz e alta transmissão no resto da faixa de frequência. Este filtro também apresenta um bom desempenho quando submetido a potências elevadas. Além disso, o filtro...

O órgão regulador de telecomunicações do Reino Unido, Ofcom, publicou um regulamento que estabelece a potência de transmissão máxima para White Space Devices (WSDs) que operam, em caráter secundário, em uma célula de 100m x 100m do sistema primário de TV digital. A metodologia Ofcom é baseada em uma interferência de entrada única e não impõe...

— Eavesdropping is a major concern in Cognitive Radio relay systems, due to the broadcast nature of these systems. Physical Layer Security (PLS) has been seen as a good alternative to enhance the secrecy performance of these networks. Based on the concept of perfect secrecy, PLS uses an information-theoretic approach to prevent secondary...

A Tomografia por Impedância Elétrica (EIT) tem se tornado popular por apresentar diversas vantagens quando comparada a outros métodos de tomografia. Porem, a resolução de imagens adquiridas através de EIT é bastante pobre. Além disso, a característica não-uniforme das imagens resultantes do uso de técnicas de elementos finitos impede a aplicação...