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Helder A. Pereira

Researcher at Federal University of Campina Grande

Publications -  52
Citations -  421

Helder A. Pereira is an academic researcher from Federal University of Campina Grande. The author has contributed to research in topics: Network topology & Optical switch. The author has an hindex of 10, co-authored 48 publications receiving 379 citations. Previous affiliations of Helder A. Pereira include Federal University of Pernambuco & Universidade de Pernambuco.

Papers
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Journal ArticleDOI

OSNR model to consider physical layer impairments in transparent optical networks

Helder A. Pereira, +3 more
- 01 Oct 2009 - 
TL;DR: A model that considers several physical impairments in all-optical networks based on optical signal-to-noise degradation and shows the impact of each impairment on network performance in terms of blocking probability as a function of device parameters is proposed.
Journal ArticleDOI

SIMTON: A Simulator for Transparent Optical Networks

Daniel A. R. Chaves, +3 more
TL;DR: SIMTON as discussed by the authors is an event-driven simulation software implemented in C++ which takes into account optical device characteristics for the evaluation of network blocking probability in wavelength routed transparent optical networks.
Journal ArticleDOI

Wavelength Assignment for Physical-Layer-Impaired Optical Networks Using Evolutionary Computation

Carmelo J. A. Bastos-Filho, +4 more
- 01 Mar 2011 - 
TL;DR: The main idea is to determine the wavelength activation order for a first-fit algorithm that balances the impact of the physical layer effects by using a training algorithm inspired by evolutionary concepts.
Journal ArticleDOI

Novel strategies for sparse regenerator placement in translucent optical networks

Daniel A. R. Chaves, +4 more
- 01 Dec 2012 - 
TL;DR: MU-RP presented remarkable results and outperformed all previous approaches in all cases, while MSU-RP obtained a slightly superior or similar performance when compared to previous approaches presented in the literature.
Proceedings ArticleDOI

Heuristic algorithms for regenerator assignment in dynamic translucent elastic optical networks

Daniel A. R. Chaves, +4 more
TL;DR: Two heuristics to perform regenerator assignment in translucent elastic optical networks are proposed: the first one tries to use the modulation format with the highest spectral efficiency, whereas the other one aims to transmit the optical signal as far as possible before it undergoes into a regeneration process.