Creating and sharing knowledge for telecommunications
... Manuel Alberto Reis de Oliveira Violas

Senior Researcher

Manuel Violas

Academic position: Assistant Professor
Joining date: 01-01-1999
Roles in IT: Senior Researcher
Scientific Area: Optical Communications
Group: Optical Communications and Photonics – Av

Email: Send Email
Address: IT – Aveiro
Instituto de Telecomunicações
Campus Universitário de Santiago
P-3810-193 AVEIRO - PORTUGAL
Tel: +351 234 377 900
Fax: +351 234 377 901


Scientific Achievements

  • PhD, Universidade de Aveiro, 01-01-1999
Supervision of theses
  • Research on Nonlinearities in Radio over Fiber, PhD Student, Zhansheng Liu, 04-2014
Co-Supervision of theses
  • “Cooperative Positioning for Heterogeneous Wireless Systems”, PhD Student, Senka Hadzic, 02-2014
  • Implementação numa FPGA de Técnicas MIMO Projectadas para Sistemas de 4G, MSc Student, TIAGO MIGUEL DE PINA CORREIA, 12-2013
  • M. Violas, J.L. Lourenço, A. Silva, A. Gameiro, AN OFDM Platform for Wireless Systems Testing: Alamouti 2x1 MIMO Example, WSEAS Trans. on Communications, Vol. 13, No. 1, pp. 672 - 682, December, 2014,
    | Abstract
    | BibTex
  • W. Dghais Dghais, V. M. C. Ribeiro, Z. Liu, Z. Vujicic, M. Violas, A. Teixeira, Efficient RSOA Modelling using Polar Complex-Valued Neural Networks, Optics Communications, Vol. ?, No. ?, pp. 1 - 4, September, 2014,
    | Abstract
    | BibTex
  • S. Hadzic, D. Yang, M. Violas, J. Rodriguez, Energy Efficient Mobile Tracking in Heterogeneous Networks using Node Selection, EURASIP Journal on Wireless Communications and Networking, Vol. 2014, No. 2, pp. 1 - 10, January, 2014 | BibTex
  • T. Pereira, M. Violas, J.L. Lourenço, A. Gameiro, A. Silva, C. Ribeiro, An FPGA Implementation of OFDM Transceiver for LTE Applications, Intrnl. Journal On Advances in Systems and Measurements, Vol. 6, No. 1-2, pp. 224 - 234, June, 2013,
    | Abstract
    | Full text (PDF 958 KBs) | BibTex
  • Z. Liu, M. Violas, N.B.C. Carvalho, Modeling and Simulation of a Reflective Semiconductor Optical Amplifier Modulator Using X-Parameters®, IEEE Photonics Technology Letters, Vol. 25, No. 3, pp. 272 - 274, February, 2013 | BibTex
  • Z. Liu, M. Violas, N.B.C. Carvalho, Wideband Dynamic Behavioral Modeling of Reflective Semiconductor Optical Amplifiers Using a Tapped-Delay Multilayer Perceptron, Optics Express, Vol. 21, No. 3, pp. 3354 - 3362, February, 2013 | BibTex
  • Z. Liu, M. Violas, N.B.C. Carvalho, Analysis on Dynamic Characteristics of Reflective Semiconductor Optical Amplifier Based on a Memory Polynomial Model, Microwave and Optical Tech. Letters, Vol. 54, No. 3, pp. 805 - 808, March, 2012,
    | Abstract
    | BibTex
  • D. Wake, A. Nkansah, P. Assimakopoulos, N. J. G. Gomes, M. Violas, Z. Liu, S. Pato, F. M. Ferreira, G. Valicourt, R. Brenot, Rádio sobre Fibra, Revista RTI - Redes, Telecom e Instalações, Vol. -, No. -, pp. 52 - 63, November, 2011 | BibTex
  • Z. Liu, M. Violas, N.B.C. Carvalho, Digital Predistortion for RSOAs as External Modulators in Radio over Fiber Systems, Optics Express, Vol. 19, No. 18, pp. 17641 - 17646, August, 2011,
    | Abstract
    | BibTex
  • Z. Liu, M. Sadeghi, G. Valicourt, R. Brenot, M. Violas, Experimental Validation of a Reflective Semiconductor Optical Amplifier Model Used as a Modulator in Radio Over Fiber Systems, IEEE Photonics Technology Letters, Vol. 23, No. 9, pp. 576 - 578, May, 2011,
    | Abstract
    | BibTex
  • M. Violas, D. Wake, F. Van Dijk, F. Van Dijk, C. Ware, A. Enard, D. Make, Z. Liu, M. Lamponi, R. Brenot, Radio-Over-Fiber Access Network Architecture Based on New Optimized RSOA Devices With Large Modulation Bandwidth and High Linearity, IEEE Trans. on Microwave Theory and Tech., Vol. 58, No. 11, pp. 3248 - 3258, November, 2010,
    | Abstract
    | BibTex
  • G. Valicourt, F. Pommereau, F. Poingt, M. Lamponi, G. H. Duan, M. Violas, R. Brenot, Chirp Reduction in Directly Modulated Multi-Electrode RSOA Devices in Passive Optical Networks, IEEE Photonics Technology Letters, Vol. 22, No. 19, pp. 1425 - 1427, October, 2010,
    | Abstract
    | BibTex
  • D. Wake, A. Nkansah, N. J. G. Gomes, G. Valicourt, R. Brenot, M. Violas, Z. Liu, F. M. Ferreira, S. Pato, A Comparison of Radio over Fiber Link Types for the Support of Wideband Radio Channels, IEEE/OSA Journal of Lightwave Technology, Vol. 28, No. 16, pp. 2416 - 2422, August, 2010,
    | Abstract
    | BibTex
  • M. V. Drummond, R.N. Nogueira, M. Violas, P. Monteiro, C. Sterner, P.-Y. Fonjallaz, All-Optical generation of 40 Gb/s Single Sideband Signals Using a Fiber Bragg Grating, Optics Communications, Vol. 283, No. 12, pp. 2492 - 2495, June, 2010,
    | Abstract
    | BibTex
  • M. V. Drummond, R.N. Nogueira, P. Monteiro, M. Violas, C. Sterner, P.-Y. Fonjallaz, Tunable Optical Dispersion Compensator based on Power Splitting between Two Dispersive Media, IEEE/OSA Journal of Lightwave Technology, Vol. 28, No. 8, pp. 1164 - 1175, April, 2010,
    | Abstract
    | BibTex
  • M. Madureira, D. Fonseca, M. Violas, R. Aguiar, A. Cartaxo, P. Monteiro, Postdetection adjustable simultaneous compensation of DGD and GVD in a 40-Gb/s optical single-sideband system, IEEE Photonics Technology Letters, Vol. 19, No. 18, pp. 1356 - 1358, September, 2007 | BibTex
  • Luís M. R. Teixeira, P. Monteiro, M. Violas, A. Teixeira, J. M. Santos, Adaptive Chromatic Dispersion Compensation Using Electrical Transversal Filters, Revista do Departamento de Electrónica e de Telecomunicações, Universidade de Aveiro, Vol. 4, No. 2, pp. 186 - 190, January, 2004 | BibTex

Currently running projects4

Acronym Name Funding Agency Start date Ending date
Mob-5G Componentes e serviços para redes 5G P2020 01-01-2018 01-12-2020
ORCIP Optical Radio Convergence Infrastructure for Communications and Power Delivering PO Centro 01-05-2017 01-05-2020
PURE-5GNET Cooperative Multi-band Access Strategies for 5G Ultra Dense Networks IT, FCT 01-04-2016 01-03-2018
RETIOT Utilização de Tecnologias de Reflectometría no melhoramento do futuro Internet das Coisas e Sistemas Ciber-Físicos P2020 01-01-2017 01-12-2019

Closed Projects19

Acronym Name Funding Agency Start date Ending date
ATLAS All-optical Terabit per second Lambda-Shifted transmission EU 01-01-2000 31-12-2002
BENEFIC Best ENergy EFficiency solutions for heterogeneous multI-core Communicating systems QREN 01-01-2014 01-06-2015
CelCop Multicell Cooperation for Future Wireless Systems IT/LA 01-06-2011 01-10-2013
COPWIN Coordinated MultiPoint Strategies for Future Wireless Networks FCT/PTDC 01-07-2013 01-01-2016
CROWN Co-operative Radio over Fibre for Wireless Networks FCT/PTDC 01-03-2011 01-02-2014
DiNEq Digital Nonlinear Equalization in Very-High Speed Coherent Optical Transmission Systems FCT/PTDC 01-07-2013 01-06-2015
DiRecTRadio All-Digital Reconfigurable System-on-Chip Transmitter for Cognitive Radio Systems IT/LA 01-07-2011 01-06-2013
ETOBLU Terminal Optical Equipments for Single Side Band ADI 01-09-2003 28-02-2005
ETOBLU Terminal Equipments for Optical Single Side Band Transmission Siemens Networks SA 01-10-2004 31-12-2006
FUTON Fibre Optic Networks for Distributed, Extendible Heterogeneous Radio Architectures and Service Provisioning EU/FP7 01-01-2008 01-06-2010
FUTON Fibre Optic Networks for Distributed, Extendible Heterogeneous Radio Architectures and Service Provisioning EU/FP7 01-01-2008 01-06-2010
FUTON ibre-Optic Networks for Distributed Extendible Heterogeneous Radio Architectures and Service EC/FP7 01-01-2008 01-12-2010
HETCOP Joint Cooperative and Cognitive Strategies for Heterogeneous Wireless Systems IT/LA 01-04-2014 01-07-2016
ISIS InfraStructures for broadband access in wireless/photonics and Integration of Strengths in Europe EU 01-01-2006 31-12-2008
OPTRONET OPtimized Transponders for Robust NETworks ADI, Nokia Siemens Networks SA 01-01-2006 30-06-2008
OPTRONET OPtimized Transponders for Robust Optical NETworks ADI 01-01-2006 01-06-2008
PHOTON Distributed and Extendible Heterogeneous Radio Architectures using FCT/PTDC 01-11-2007 01-11-2010
THE MOST Transimpedance Highly Efficient Micro & millimetrewave Optical Smart Transceiver ADI 01-01-2003 31-12-2006
TOBLU Single Side Band Optical Transmission FCT/POSI 01-01-2001 30-06-2004