XXX Simpósio Brasileiro de Telecomunicações

Correntropy Coefficient, Automatic Modulation Classification, Radio Cognitivo

This article presents a DBA algorithm and the comparison among four methods of determining one of its inputs, the bandwidth demand. For the performance evaluation, we used a XG-PON implemented in the OMNet++ simulation framework. The four methods are: conventional Status Report (SR) and Traffic Monitoring (TM), and TM-based prediction using...

This work has as main goals in research, evaluation and test of the Depth Hallucination process: capture the images, image processing and surface depth visualization. Using the C# (CSharp) programming language, we developed a software that contains all algorithms of this technique and presents a friendly and simple interface. This allows that the...

The increasing demand for rich multimedia services and the scarcity of radio resources has motivated the research of technologies able to increase wireless systems’ capacity without requiring additional spectrum. In this context, direct Device-toDevice (D2D) communication between User Equipments (UEs) is a promising technology. By allowing direct...

This paper presents a novel strategy to implement adaptive Hammerstein filters aiming to circumvent numerical problems arising from the cascade adaptive process inherent to these filters. Such problems are often overcome maintaining one of the filter coefficients fixed, which may significantly impair the convergence speed of the adaptive algorithm....

This paper presents a simulation study of Optical Burst Switching Networks using the hybrid WDM/OCDM technology under Polarization Mode Dispersion (PMD) restrictions. The analysis was carried on through the burst loss probability and average dispersion due to PMD

This paper presents a new adaptive algorithm alternative to the mean-square weight deviation-proportionate ( -proportionate) z2 algorithm. The latter combines a mean-square weight deviation-proportionate gain distribution with a uniform one. Such a strategy is strongly dependent on the measurement noise power level that, in practice, is not readily...

In the last few years, advanced multi-antenna systems attracted a lot of interest as a means to improve the spectral efficiency of conventional cellular networks. This is the case of Coordinated Multi-Point (CoMP) systems in the context of 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE). However, the large amount of signaling required...

The purpose of this paper is to derive a general analytical expression for the correlation coefficient of signals received by two different antennas as a function of the distance between them (baseline distance), the signal bandwidth, and the antenna beamwidth. The two antennas are supposed to be part of a radar system for detecting meteorological...

Reticulados q-ários são obtidos através da Construção A de códigos lineares q-ários. Neste trabalho, mostramos que no estudo de tais reticulados munidos da métricas lp, surge naturalmente uma nova metrica no conjunto Znq, a qual chamamos métrica p-Lee. Para p = 1, esta métrica é a chamada métrica de Lee, largamente estudada na literatura. Para 1 < p ≤...