Archive for Publications

Fernando J. Velez and Marja Matinmikko, “Technical Approaches for Improved Spectrum Sharing,” Chapter in the book Cognitive Radio Policy and Regulation: Techno-Economic Studies to Facilitate Dynamic Spectrum Access, edited by Arturas Arturas Medeisis, and Oliver Holland, Springer, London, UK, 2014, pp. 117-138.

Dariusz Wiecek and Fernando José Velez, “Case Studies for Advancing CR Deployment,” Chapter in the book Cognitive Radio Policy and Regulation: Techno-Economic Studies to Facilitate Dynamic Spectrum Access, edited by Arturas Arturas Medeisis and Oliver Holland, Springer, London, UK, 2014, pp. 309-348.

Luís M. Borges, Fernando J. Velez and António S. Lebres, “Survey on the Characterization and Classification of Wireless Sensor Networks Applications,” IEEE Communications Surveys and Tutorials, Apr. 2014.

Jessica Acevedo, Daniel Robalo, Fernando J. Velez, “Jessica Acevedo Flores, Daniel Robalo and Fernando J. Velez, “Transmitted Power Formulation for the Optimization of Spectrum Aggregation in LTE-A over 800 MHz and 2 GHz Frequency Bands,” Special Issue of the Wireless Personal Communications Journal (from WPMC 2013), Dec. 2014.

Norberto Barroca, Luís M. Borges,Fernando J. Velez and Periklis Chatzimisios, “IEEE 802.15.4 MAC Layer Performance Enhancement by employing RTS/CTS combined with Packet Concatenation,” in Proc. of IEEE International Conference on Communications (ICC 2014) – Ad-hoc and Sensor Networking Symposium, Sidney, Australia, June 2014.

Daniel Robalo, Fernando J. Velez and Rui R. Paulo and Giuseppe Piro, “Extending the LTE-Sim Simulator with Multi-band Scheduling Algorithms for Carrier Aggregation in LTE-Advanced Scenarios,” accepted for publication in VTC-Spring 2015, Glasgow, Scotland, UK, May 2015.

Caroline Loss, Rita Salvado, Catarina Lopes, Pedro Pinho, Ricardo Gonçalves, Fernando Velez, Jorge Tavares, Henrique Saraiva, Norberto Barroca and Luis Borges, “Developing sustainable communication interfaces through fashion design”, 5th STS Italia Conference A MATTER OF DESIGN Making Society through Science and Technology, Milano, 12-14 June 2014.

Luís M. Borges, Fernando J. Velez Norberto Barroca and António S. Lebres, “Frame Capture and Reliability Based Decider Implementation in the MiXiM IEEE 802.15.4 Framework,” accepted for publication in International Conference on Simulation Tools and Techniques 2014, Lisbon, Portugal, Mar. 2014.

Luís M. Borges, Rodolfo Oliveira and Fernando J. Velez,Two-Phase Contention Window Control Scheme for Decentralized Wireless Networks,” accepted for publication in IEEE Wireless Communications and Networking Conference (WCNC’ 2014), Istambul, Turkey, Apr. 2014.

Jessica Acevedo Flores, Fernando J. Velez, Orlando Cabral, Daniel Robalo, Oliver D Holland, Hamid Aghvami, Filippo Meucci, Albena Mihovska, Neeli Rashmi Prasad and Ramjee Prasad, “Cost/Revenue Performance in an IMT-Advanced Scenario with Spectrum Aggregation Over Non-Contiguous Frequency Bands,” in Proc. of International Conference on Telecommunications 2014 (ICT 2014), Lisboa, Portugal, 5-7 May 2014.

Luís M. Borges, Norberto Barroca, Henrique M. Saraiva, Jorge Tavares, Paulo Gouveia, Fernando J. Velez, Caroline Loss, Luisa Salvado, Pedro Pinho, Ricardo Gonçalves, Nuno Borges Carvalho, Raúl Chávez-Santiago and Ilangko Balasingham, “Design and Evaluation of Multi-Band RF Energy Harvesting Circuits and Antennas for WSNs,” in Proc. of International Conference on Telecommunications 2014 (ICT 2014), Lisboa, Portugal, 5-7 May 2014.

Henrique M. Saraiva, Luis Borges, Norberto Barroca, Jorge Tavares, Paulo T. Gouveia, Fernando J Velez, Caroline Loss, Rita Salvado, Pedro Pinho, Ricardo Gonçalves, Nuno Borges de Carvalho, Raúl Chávez-Santiago and Ilangko Balasingham, “Experimental Characterization of Wearable Antennas and Circuits for RF Energy Harvesting in WBANs,” in Proc. of VTC2014-Spring – IEEE 79th Vehicular Technology Conference: VTC2014-Spring, Seoul, South Korea, May 2014.

Daniel Robalo and Fernando J. Velez, “Model for Mapping between the Quality of Service and Experience for Wireless Multimedia Applications,” in Proc. of VTC2014-Spring – IEEE 79th Vehicular Technology Conference: VTC2014-Spring, Seoul, South Korea, May 2014.

 

Journal Papers

Wonhoon Jang, Nelson V. Silva, Arnaldo S. R. Oliveira, Nuno Borges Carvalho, “Analysis on in-band distortion caused by switching amplifiers”, IET Microwaves, Antennas & Propagation, October 2013.

André Prata, Nuno Borges Carvalho, Arnaldo S. R. Oliveira, “An Agile Digital Radio System for UHF White Spaces”, IEEE Microwave Magazine, January 2014, vol. 15, nº 1.

Conference Papers

Norberto Barroca, Paulo T. Gouveia and Fernando J. Velez, “Impact of Switching Latency Times in Energy Consumption of IEEE 802.15.4 Radio  Transceivers,”  in  Proc.  of  The  9th  Conference  on Telecommunications –  Conftele 2013, Castelo Branco, Portugal, May 2013.

Norberto Barroca, Luís M. Borges, Jorge Tavares, Fernando J. Velez, Raúl Chavéz-Santiago and Ilangko Balasingham “Identification of the Opportunistic  Radio  Frequency  Bands  for  Energy  Harvesting  in Wireless  Body  Area  Networks,”  in  Proc.  of  the  9th  Conference  on Telecommunications –  Conftele 2013, Castelo Branco, Portugal, May 2013.

Norberto  Barroca,  Fernando  J.  Velez  and  Periklis  Chatzimisios, “Block Acknowledgment Mechanisms for the optimization of channel use  in  Wireless  Sensor  Networks”,  in  Proc.  of  the  24th  Annual  IEEE International  Symposium  on  Personal,  Indoor  and  Mobile  Radio Communications (PIMRC 2013), London, UK, September 2013.

Norberto  Barroca,  Henrique  M.  Saraiva,  Paulo  T.  Gouveia,  Jorge Tavares,  Luís  M.  Borges,  Fernando  J.  Velez,  Caroline  Loss,  Rita Salvado,  Pedro  Pinho,  Ricardo  Gonçalves,  Nuno  Borges  Carvalho, Raúl  Chavéz-Santiago,  Ilangko  Balasingham,  “Antennas  and  Circuits for Ambient RF Energy Harvesting in Wireless Body Area Networks”, in  Proc.  of  the  24th  Annual  IEEE  International  Symposium  on  Personal,  Indoor  and  Mobile  Radio  Communications  (PIMRC  2013), London, UK, September 2013.

Henrique  M.  Saraiva,  Luís  M.  Borges,  Norberto  Barroca,  Paulo  T. Gouveia,  Jorge  Tavares,  Fernando  J.  Velez,  Caroline  Loss,  Rita Salvado,  Pedro  Pinho,  Ricardo  Gonçalves,  Nuno  Borges  Carvalho, Raúl  Chavéz-Santiago,  Ilangko  Balasingham,  “Experimental Characterization  of  Wearable  Antennas  and  Circuits  for  RF  Energy Harvesting  in  WBANs”,  submitted  to  The  IEEE  79th  Vehicular Technology Conference: VTC2014-Spring, Seoul, Korea, February 2014.

Norberto Barroca, Fernando J. Velez and Periklis Chatzimisios, “IEEE 802.15.4 MAC Layer Performance Enhancement by employing RTS/CTS combined with Packet Concatenation”, submitted to IEEE International Conference on Communications (ICC), Sydney, Australia, Jun. 2014.

Luís M. Borges, Rodolfo Oliveira and Fernando J. Velez, “A Two-Phase Contention Window Control Scheme for Decentralized Wireless Networks”, submitted to the IEEE Wireless Communications and Networking Conference (WCNC 2014), Istanbul, Turkey, April 2014.

Rodolfo Oliveira, Luís M. Borges, and Fernando J. Velez, “A Double Stage Random Access Scheme for Decentralized Single Radio Cognitive Networks”, in Proc. of The Tenth International Symposium on Wireless Communication Systems (ISWCS’13), Ilmenau, Germany, August 2013.

Luís M. Borges, Fernando J. Velez, António S. Lebres and Norberto Barroca, “Frame Capture Effect and Reliability Based Decider Implementation in the MiXiM IEEE 802.15.4 Simulator Framework”, submitted to the 7th International ICST Conference on Simulation Tools and Techniques (SIMUTools 2014), Lisbon, Portugal, March 2014.

Jessica Acevedo Flores, Daniel Robalo and Fernando J. Velez, “Transmitted Power Formulation for the Implementation of Spectrum Aggregation in LTE-A over 800 MHz and 2 GHz Frequency Bands,” in Proc. of WPMC 2013 – International Symposium on Wireless Personal Multimedia Communications, Atlantic City, New Jersey, USA, June 2013.