XXXVIII Simpósio Brasileiro de Telecomunicações e Processamento de Sinais

This paper presents a study about the operation of a fully optical device based on nonlinear directional couplers based on crystal fiber dual-core. It analyzed the transmission and interaction of energy between the pulses of the waveguides through pulse width modulation, taking into account the input power, pulse modulation and phase difference. The...

A combinatorial approach was recently proposed for the design of multidimensional signal constellations for fading channels. Albeit flexible and guaranteeing full signal space diversity, the technique adopts the exponentially complex optimal maximum likelihood (ML) detection. In this work, we propose two low complexity detection algorithms, a sub-optimal...

Independent Component Analysis (ICA) methods are widely used in the linear Blind Source Separation (BSS) problem. Nevertheless, for some practical cases, the linear assumption is not valid, requiring nonlinear mixing models. The Post-Nonlinear is one of the few nonlinear models in which ICA is able to perform source separation. In previous works, an...

In this paper, we propose a two-stage tensor-based semi-blind receiver for joint channel, phase noise (PN) and symbol estimation for frequency-selective MIMO systems in the presence of PN impairments. In the first stage, the frequency-selective MIMO channel is directly estimated through a tensor-based alternating least squares (ALS) algorithm that fits a...

A Non-Orthogonal Multiple Access (NOMA)-based Wireless Powered Communication Network (WPMC) system is studied in this work where, at each time frame, an access point firstly performs Wireless Power Transfer (WPT) to energize the battery of mobile terminals (phase 1) and then, receives information from terminals in uplink by employing NOMA (phase 2).We...

In this article we employ a reinforcement learning solution called Upper Confidence Bound (UCB) over the framework of Multi-Armed Bandit (MAB) to solve User Equipment (UE) pairing problem in Full Duplex (FD) network. In the context of the total data rate maximization problem, our proposed solution is capable of learning the best UE pair iteratively by...

This work is focused on the development of a new effective strategy to implement Volterra filters using flexible or configurable hardware platforms such as field-programmable gate arrays (FPGAs). The proposed strategy is based on multiple-constant-multiplication (MCM) techniques, which utilize shifts, sums, and hardware reuse for effectively carrying out...

The Aedes aegypti mosquito is the transmitter of diseases like dengue, zika, chikungunya, and urban yellow fever, which affect millions of people every year. The main control for these diseases is done by searching and eliminating the mosquitos breeding grounds. In this work we introduce a comprehensive database of aerial videos recorded with a drone,...

This work introduces enhanced versions of the temporal compressive resource allocation technique, which is applied for power line communication systems when the periodically time varying behavior of electric power systems is taken into account. The enhancements are accomplished by introducing two changes that increase the effectiveness of the resource...

Fifth generation (5G) mobile networks are adopting several techniques to provide higher data rates while meeting strict latency requirements. Advanced compression techniques and distributed data processing are among them supporting cost efficient network deployments. Also, the usage of machine learning techniques to optimize telecommunication systems is...