XXXV Simpósio Brasileiro de Telecomunicações e Processamento de Sinais

We evaluate the performance of an energy con- strained cognitive full-duplex network coding based scheme. The secondary cooperative network is composed of two energy- constrained full-duplex users that cooperate to transmit their independent information to a common destination. The secondary users do not have sources of energy and they harvest...

This paper presents the development of a new interrogation technique for optical fiber sensors based on long period grating (LPG). The technique is a simple and robust mathematical model, that considers all the LPG’s spectral parameters, such as the bandwidth, the resonance wavelength, and the attenuation depth. The validation of this technique...

This article describes a method for segmenting images of the dorsal hand for the purpose of locating and extracting the pixels that compose the veins region in the images. Thus, it is possible to identify a person using veins information as a biometric feature. The article also describes the steps of a complete biometric system. At the end, we...

Currently, physical objects are integrated and con- nected in the networks to provide services for people perform- ing the well-known Internet of Things (IoT) paradigm. IoT environments are characterized by a high degree of devices heterogeneity and network protocols, where each object may have different processing capabilities or different...

Phantom mode has been proposed to improve G.fast applications. However, the most of the phantom mode systems deploy the first phantom layer only. Nevertheless, this work analyses the feasibility of a system, which deploys an additional phantom mode level, called second phantom layer. The entire system, first and second layers and differential...

Verification process in digital television (DTV) pro- duction often includes a tuning and decoding check, which ensure that assembled devices are capable to reproduce audio and video. Poor test signals conditions, however, may cause device rejection, leading to losses of time and money for the manufacturer. This work proposes a real time DTV test...

This work investigates an alternative approach to the problem of blind equalization. The approach is based on complexity measures and is inspired by preceding successful application of the same framework to the problem of blind source separation. We draw the relationship between algorithmic com- plexity, a measure for randomness within the area of...

Este trabalho apresenta um estudo sobre antenas impressas do tipo microstrip ou microlinha, construídas sobre um substrato convencional de Fenolite, também muito usado em eletrônica. As antenas são projetadas para operar a 2,4 GHz. Mostra-se um projeto evolutivo de um elemento radiante para um agregado de dois elementos radiantes. Em primeiro...

The wavelet shrinkage approach has been considered a method of low computational cost and reasonable performance in signal denoising. However, this method is not entirely adaptive, because of its dependence on parameters such as the wavelet function and scale. This paper aims to evaluate the relation between the performance of the method and...

This article presents the development of a text dependent speaker verification algorithm, which alias the Mel Frequency Cepstrum Coeficients with parameters calculated from the glottal signal using Hidden Markov Models to identify the stochastic pattern of these measurements. The glottal signal is generated when the air flow passes through the...