Journals

2011

[GAN11d] F. Ganhão, M. Pereira, L. Bernardo, R. Dinis, R. Oliveira, and P. Pinto, "Performance of Hybrid ARQ for NDMA Access Schemes with Uniform Average Power Control,"Journal of Communications, Academy Publishers, Vol. 6, No.9, December 2011, pp. 691-699.

[CMMV11] O. Cabral, F. Meucci, A. Mihovska, F.J. Velez and N.R. Prasad, “Integrated Common Radio Resource Management with Spectrum Aggregation over Non-Contiguous Frequency Bands,” Wireless Personal Communications, Vol. 59, No. 3, Aug. 2011, pp. 499-523 (available online DOI: 10.1007/s11277-011-0242-6).

[PCPV11] N. Pais, B.K. Cetin, N. Pratas, F.J. Velez, N.R. Prasad and R. Prasad, “Cost-benefit Aware Routing Protocol for Wireless Sensor Networks with Hybrid Energy Storage System,” Journal of Green Engineering, Vol. 1, No. 2, Jan. 2011, pp. 189-208.

[VNHA11] Fernando J. Velez, Maria del Camino Noguera, Oliver Holland and A. Hamid Aghvami, “Fixed WiMAX Profit Maximisation with Energy Saving through Relay Sleep Modes and Cell Zooming,” Journal of Green Engineering (Special Issue from WPMC 2010), Vol. 1, No. 4, July 2011, pp. 355-381.

2012

[VCMV12]Fernando J. Velez, Orlando Cabral, Francisco Merca and Vasos Vasiliou, “Service Characterisation for Cost Benefit Optimisation of Enhanced UMTS”, Telecomm. Systems, vol. 50, no. 1, pp. 31-45, Jan. 2012.

[OlLD12] R. Oliveira, M. Luís, L. Bernardo, R. Dinis, “Towards Reliable Broadcast in ad hoc Networks”, IEEE Comm. Letters, vol. 16, no. 3, pp 314-317, Mar. 2012.

[PDOC12]M. Pereira, L. Bernardo, R. Dinis, R. Oliveira, P. Carvalho, P. Pinto, “Performance of diversity combining ARQ error control in a TDMA SC-FDE system”, IEEE Trans. on Comms., vol. 60, no. 3, No 9, pp. 735-746, Mar. 2012.

[BoVL12] Luís M. Borges, Fernando J. Velez and António S. Lebres, "Taxonomy for the Characterization and Classification of Wireless Sensor Networks Applications," submitted to IEEE COMST, June 2012.

[BeDi12] M. Beko, R. Dinis “Designing Good Multi-Dimensional Constellations”, IEEE Wireless Comm. Letters, vol. 1, no. 3, pp. 221-224, June 2012.

[GDBO12a] F. Ganhão, R. Dinis, L. Bernardo, R. Oliveira, “Analytical BER and PER Performance of Frequency-Domain Diversity Combining, Multipacket Detection and Hybrid Systems”, IEEE Trans. on Comms., vol. 60, no. 8, pp. 2353-2362, Aug. 2012.

[CNHN12] Raúl Chávez-Santiago, Keith E. Nolan, Oliver Holland, Luca de Nardis, João M. Ferro, Norberto Barroca, Luís M. Borges, Fernando J. Velez, Vânia Gonçalves and Ilangko Balasingham, “Cognitive Radio for Medical Body Area Networks Using Ultra Wideband,” IEEE Wireless Comms., SI on Cognitive Radio – A Practical Perspective, vol. 19, no. 4, pp. 74-81, Aug. 2012.

[Beko12a] M. Beko, “Efficient Beamforming in Cognitive Radio Multicast Transmission’’, IEEE Trans. on Wireless Comms., vol. 11, no. 11, pp. 4108-4117, Nov.2012.

2013

[OLFB13] R. Oliveira, M. Luís, A. Furtado, L. Bernardo, R. Dinis, P. Pinto, “Improving path duration in high mobility vehicular ad hoc networks”, Ad Hoc Networks, vol. 11, no. 1, pp 89-103, Jan. 2013.

[BBVM13] Norberto Barroca, Luís M. Borges, Fernando J. Velez, Filipe Monteiro, Marcin Górski and João Castro-Gomes, “Wireless Sensor Networks for Temperature and Humidity Monitoring within Concrete Structures”, Construction & Building Materials, vol. 19, no. 4, pp 74-81, Mar. 2013.

2014

[LFOD13] M. Luís, A. Furtado, R. Oliveira, R. Dinis, and L. Bernardo, “Towards a Realistic Primary Users Behavior in Single Transceiver Cognitive Networks”, IEEE Communications Letters, Vol. 17, No. 2, pp. 309-312, Feb. 2013.

[GPBD13] F. Ganhão, M. Pereira, L. Bernardo, R. Dinis, R. Oliveira, and P. Pinto, “Performance Analysis of an Hybrid ARQ adaptation of NDMA schemes”, IEEE Trans. on Communications, Vol. 61, No. 8, pp. 3304-3317, Aug. 2013.

[PBDO13a] M. Pereira, L. Bernardo, R. Dinis, R. Oliveira, and P. Pinto, “On the Use of Frequency-Domain Cross-Layer Diversity Techniques to Cope with Lost Packets”, Physical Communication, Elsevier, Vol. 8, pp. 56-68, Sep. 2013.

[PBDO13b] M. Pereira, L. Bernardo, R. Dinis, R. Oliveira, e P. Pinto, “Frequency-Domain Cross-Layer Diversity Techniques: An Efficient Way of Coping with Lost Packets in Broadband Wireless Systems”, IEEE Wireless Communications, Vol. 20, No. 5, pp. 100-108, Oct. 2013.

[PBDO13c] M. Pereira, L. Bernardo, R. Dinis, R. Oliveira, P. Montezuma, and P. Pinto, “Optimization of a p-persistent Network Diversity Multiple Access protocol for a SC-FDE system”, IEEE Trans. on Wireless Communications, Vol. 12, No. 12, pp. 5953-5965, Dec. 2013.

[BBVM13] Norberto Barroca, Luís M. Borges, Fernando J. Velez, Filipe Monteiro, Marcin Górski and João Castro-Gomes, “Wireless Sensor Networks for Temperature and Humidity Monitoring within Concrete Structures,” Construction and Building Materials, vol. 40, no. 0, Mar. 2013, pp. 1156–1166.

[BoVL14 ] Luís M. Borges, Fernando J. Velez and António S. Lebres, “Survey on the Characterization and Classification of Wireless Sensor Networks Applications,” accepted for publication in IEEE Communications Surveys and Tutorials, Mar. 21st, 2014 .

[ROVH14] Daniel Robalo, João Oliveira Fernando J. Velez, Oliver Holland and A. Hamid Aghvami, “Dynamic Configuration and Optimization of WiMAX Networks with Relay Power Savings Modes: Measurement-Based Scenario in a Hilly Region”, submitted to Wireless Personal Commu nications, Feb. 2014.

[AcRV14] 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,” submitted to Special Issue of the Wireless Personal Communications Journal (from WPMC 2013), Mar. 2014.

Book chapters

2011

[CFV11] Orlando Cabral, João M. Ferro and Fernando J. Velez, “Interoperability Between IEEE 802.11e and HSDPA: Challenges from Cognitive Radio,” Chapter in the book Cognitive Radio Mobile Ad Hoc Networks, edited by F. Richard Yu, Springer, Norwell, MA, USA, 2011 (DOI: 10.1007/978-3-642-15687-8_6).

2012

[KGER12] Thomas Kürner, Paolo Grazioso, Andreas Eisenblätter, Guillaume de la Roche, Fernando J. Velez, Matias Toril, Michal Wagrowski, Mario Garcia-Lozano, and Philipp P. Hasselbach, “Deployment of Next Generation Cellular Networks,” Chapter 10 in the book Pervasive Mobile & Ambient Wireless Communications (COST Action 2100), edited by Roberto Verdone and Alberto Zanella, Springer, London, UK, 2012 (ISBN 978-1-4471-2314-9), pp. 407-460.

[HFAC11] O. Holland, C. Facchini, A. H. Aghvami, O. Cabral, and F.J. Velez, “Opportunistic Load and Spectrum Management for Green Radio,” Chapter in the book Green Radio Communication Networks, edited by E. Hossein, V. Bhargava, G. Fettweis, Cambridge University Press, Cambridge, UK, 2012.

2013

[LODB13] M. Luis, R. Oliveira, R. Dinis, L. Bernardo, “ADVANCES ON MEDIUM ACCESS CONTROL FOR COGNITIVE RADIO NETWORKS”, Nova Publishers, accep. for public., 2013.

2014

[VeMa14] 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.

[WiVe14] 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.

Invited papers

2010

[MCVM10] Fillipo Meucci, Orlando Cabral, Fernando J. Velez, Albena Mihovska, Neeli Rashmi Prasad, “Spectrum Aggregation with Optimal Multi-Band Scheduling,” (invited paper for the Special Session on “Cognition, Cooperation and Flexible Spectrum Usage”) in Proc. of the 13th International Symposium on Wireless Personal Multimedia Communications, Recife, Pernambuco, Brasil, Oct. 2010.

[HACV10] Oliver Holland, Alireza Attar, Orlando Cabral, Fernando J. Velez and A. Hamid Aghvami, "Intra-Operator Spectrum Sharing Concepts for Energy Efficiency and Throughput Enhancement," in Proc. of Second International Workshop on Cognitive Radio and Advanced Spectrum Management 2010 (CogART 2010), Rome, Italy, Nov. 2010.

2011

[BoVL11] Luís M. Borges, Fernando J. Velez and António S. Lebres, “Performance Evaluation of the Schedule Channel Polling MAC Protocol Applied to Health Monitoring in the Context of IEEE 802.15.4,” in Proc. of the 17th European Wireless Conference 2011, Vienna, Austria, Apr. 2011.

[RoVe11] Daniel Robalo, Fernando J.Velez, “Model for the Correlation between Quality of Service and Experience in Cognitive Radio Networks,” in Proc. of Third International Workshop on Cognitive Radio and Advanced Spectrum Management 2011 (CogART 2011), Barcelona, Spain, Oct. 2011.

2012

[VORH12] Fernando J. Velez, João Oliveira, Daniel Robalo, Oliver Holland and A. Hamid Aghvami, “Energy Saving in the Optimization of the Planning of Fixed WiMAX with Relays in Hilly Terrains: Impact of Sleep Modes and Cell zooming,” in Proc. of ISWCS 2012, Paris, France, Aug. 2012.

2013

[TBSB13] Jorge Tavares, Norberto Barroca, Henrique M. Saraiva, Luís M. Borges, Fernando J. Velez, Caroline Loss, Rita Salvado, Pedro Pinho, Ricardo Gonçalves and Nuno Borges Carvalho, “Spectrum Opportunities for Electromagnetic Energy Harvesting from 350 MHz to 3 GHz,” ISMICT 2013, Tokyo, Japan, Mar. 2013.

 

Papers in international conferences

2011

[FLA11a] F. Amaral, R. Dinis, P. Montezuma, “On the Design of Frequency-Domain Receivers for SFN Where the Transmitters Have Different CFO,” in Proc. of IEEE MILCOM’2011, Baltimore, EUA, Nov. 2011.

[FLA11b] F. Amaral, R. Dinis, P. Montezuma, “Approaching the Matched Filter Bound with Coded OFDM and SC-FDE Schemes,” in Proc. of IEEE MILCOM’2011, Baltimore, EUA, Nov. 2011.

[HCVA11] Oliver Holland, Orlando Cabral, Fernando Velez, Adnan Aijaz, Paul Pangalos and A. Hamid Aghvami, “Opportunistic Load and Spectrum Management for Mobile Communications Energy Efficiency,” in Proc. of PIMRC 2011 – 22nd IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, Toronto, Canada, Sep. 2011.

[GaDB11] F. Ganhão, R. Dinis, L. Bernardo, "Analytical Evaluation of Iterative Packet Combining and Multipacket Detection Schemes for SC-FDE," in Proc. of IEEE VTC2011-Fall, San Francisco, USA, Sept. 2011.

[GPBD11] F. Ganhão, M. Pereira, L. Bernardo, R. Dinis, R. Oliveira, and P. Pinto, "Performance of Hybrid ARQ for Network Diversity Multiple Access Schemes," in Proc. of IEEE ICCCN’11, Maui, Havai, USA, Aug. 2011.

[MAR11] M. Beko, “On Energy-based Localization in Wireless Sensor Networks,” in Proc. of IEEE SPAWC, Jun. 2011.

[GDBC11] F. Ganhão, R. Dinis, L. Bernardo, P. Carvalho, R. Oliveira, P. Pinto, “Analytical Performance Evaluation of SC-FDE Modulations with Packet Combining and Multipacket Detection Schemes,” in Proc. of IEEE VTC-Spring'11, Budapest, Hungary, 15-18 May 2011.

[LOBD11] Miguel Luís, Rodolfo Oliveira, Luís Bernardo, Rui Dinis, “A Reliable Broadcast and Unicast MAC Protocol for ad hoc Networks,” in Proc. of IEEE VTC-Spring'11, Budapest, Hungary, 15-18 May 2011.

[OGPL11] R. Oliveira, A. Garrido, R. Pasquini, M. Luís, L. Bernardo, R. Dinis, P. Pinto, “Towards the use of XOR-based Routing Protocols in Vehicular ad hoc Networks,” in Proc. of IEEE VTC-Spring'11, Budapest, Hungary, 15-18 May 2011.

[OlBL11] R. Oliveira, L. Bernardo, M. Luis, “Analysis of Heuristic-based MAC protocols for ad hoc Networks,” in Proc. of IEEE WCNC'11, Mexico, March 2011.

[LuBD11] M. Luis, R. Oliveira, L. Bernardo, R. Dinis, “Maximizing Throughput-Fairness Tradeoff in MAC for ad hoc Networks,” in Proc. of IEEE WCNC'11, Mexico, March 2011.

[ROVP11] Daniel Robalo, João Oliveira, Fernando J. Velez, Valeria Petrini, Marina Barbiroli, Claudia Carciofi, Paolo Grazioso, Franco Fuschini, “Experimental characterisation of WiMAX propagation in different environments,” in Proc. of EuroCon-2011/Conftele’ 2011 – 8th Conference on Telecommunications, Lisbon, Portugal, Apr. 2011.

[ROVP11a] D.R. Robalo, J. Oliveira, F. J. Velez, V. Petrini, M. Barbiroli, C. Carciofi, P. Grazioso, F. Fuschini, “Experimental propagation characterisation for WiMAX at 3.5 GHz in different environments”, in Proc. of URSI Seminar of the Portuguese Committee, Lisbon, Portugal, Nov. 2011.

2012

[Beko12b] M. Beko, “Efficient Convex Optimization for Beamforming in Cognitive Radio Multicast Transmission,” in Proc. of IEEE ICC 2012, Ottawa, Canada, June 2012.

[BTDL12] M. Beko, S. Tomic, R. Dinis, V. Lipovac, “Convex Optimization-based Beamforming in Cognitive Radio Multicast Transmission,” in Proc. of VTC2012-Fall, Québec, Canada, Sep. 2012.

[GDBO12b] F. Ganhão, R. Dinis, L. Bernardo, R. Oliveira, “Performance Evaluation and Comparison between Iterative DS-CDMA and NDMA”, in Proc. of VTC2012-Fall, Québec, Canada, Sep. 2012.

[FOLD12] A. Furtado, R. Oliveira, M. Luís, R. Dinis, L. Bernardo, P. Montezuma, “The Impact of Transmission Errors in MAC Schemes for Distributed Wireless Networks”, in Proc. of 35th Sarnoff Symp., NJ, USA, 2012.

[GBDB12] F. Ganhão, L. Bernardo, R. Dinis, G. Barros, E. Santos, A. Furtado, R. Oliveira, P. Pinto, “Energy-Efficient QoS Provisioning in Demand Assigned Satellite NDMA Schemes”, in Proc. of 21st ICCCN, Munich, Germany, 2012.

[LFOD12] M. Luís, A. Furtado, R. Oliveira, R. Dinis, L. Bernardo, “Energy Sensing Parameterization Criteria for Cognitive Radios,”in Proc. of ISWCS 2012, Paris, France, 2012.

FeVe12a] João M. Ferro and Fernando J. Velez, “Combined Hop Count and Received Signal Strength Routing Protocol for Mobility-enabled,” in Proc. of VTC2012-Fall (Works. on Green Inform. and Comms.), Québec, Canada, Sep. 2012.

[HNNM12] Oliver D Holland, Luca De Nardis, Keith Nolan , Arturas Medeisis, Peter Anker, Leo Minervini, Fernando J. Velez, Marja Matinmikko, John Sydor, “Pluralisitic Licensing,” in Proc. of DySPAN 2012, Bellevue, Washington, USA, Oct. 2012.

[VORH12] Fernando J. Velez, João Oliveira and Daniel Robalo, Oliver Holland and A. Hamid Aghvami, “Cost/Revenue Optimization of WiMAX Networks with Relay Power Saving Modes: Measurement-Based Scenario in a Hilly Region,” in Proc. of Globecom 2012, Anaheim, CA, USA, Dec. 2012.

2013

[BaGV13] Norberto Barroca, Paulo T. Gouveia and Fernando J. Velez, “Impact of Switching Latency Times in Energy Consumption of IEEE 802.15.4 Radio Transceivers,”Conftele 2013, Castelo Branco, Portugal, May 2013.

[BBTV13] 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,” Conftele 2013, Castelo Branco, Portugal, May 2013.

[FlRV12] 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,” submitted to WPMC 2013, New Brunswick, NJ, USA, June 2013.

[VGBD13a] J. Vieira, F. Ganhão, L. Bernardo, R. Dinis, M. Beko, R. Oliveira, and P. Pinto, “Energy-Efficient QoS Provisioning in Random Access Satellite NDMA Schemes”, in Proc. of the IEEE International Conference on Computer Communication Networks (ICCCN’13), Nassau, Bahamas, Jul. 30 - Aug. 2, 2013.

[GBBD13] F. Ganhão, G. Barros, L. Bernardo, R. Dinis, P. Carvalho, J. Vieira, R. Oliveira, and P. Pinto, “A soft-handover scheme for LEO Satellite networks”, in Proc. of the IEEE 78th Vehicular Technology Conference (VTC2013-Fall), Las Vegas, USA, Sep. 2-5 , 2013.

[LODB13b] M. Luis, R. Oliveira, R. Dinis, and L. Bernardo, “Optimization of a Decentralized Medium Access Control Scheme for Single Radio Cognitive Networks”, in Proc. of the 13th Int. Conf. on Next Generation Wired/Wireless Advanced Networking (New2An’13), S. Petersburg, Russia, Aug. 28-30, 2013.

[GaBD13] F. Ganhão, L. Bernardo, and R. Dinis, “Type II Hybrid-ARQ for DS-CDMA: A Discrete Time Markov Chain Wireless MAC Model”, in Proc. of the 13th Int. Conf. on Next Generation Wired/Wireless Advanced Networking (New2An’13), S. Petersburg, Russia, August 28-30, 2013.

[VGBD13b] J. Vieira, F. Ganhão, L. Bernardo, R. Dinis, M. Beko, R. Oliveira, and P. Pinto, “Random Access NDMA MAC Protocols for Satellite Networks”, in Proc. of the 13th Int. Conf. on Next Generation Wired/Wireless Advanced Networking (New2An’13), S. Petersburg, Russia, August 28-30, 2013.

[CDAB13] P. Carvalho, R. Dinis, V. Astúcia, M. Beko, “On the Use of Multiple Grossly Nonlinear Amplifiers for Highly Efficient Linear Amplification of Multilevel Constellations”, in Proc. of IEEE VTC’2013 (Fall), Las Vegas, USA, Sep. 2013.

[MADB13] P. Montezuma, V. Astúcia, R. Dinis, M. Beko, “Efficient Amplification and Detection of Multilevel SC-FDE Signals Based on BPSK Components”, in Proc. of IEEE MILCOM’2013, San Diego, USA, Nov. 2013.

[MADi13] P. Montezuma, V. Astúcia, R. Dinis, “On the use of Multiple Amplifiers and Antennas for efficient Directive Transmission with large Constellations”, in Proc. of IEEE MILCOM’2013, San Diego, USA, Nov. 2013.

[GuDM13] J. Guerreiro, R. Dinis, P. Montezuama, “On The Optimum Performance of Multicarrier Optical Signals with Nonlinear Phase Distortion,” in Proc. of IEEE GLOBECOM’2013, Atlanta, USA, Dec. 2013.

[TSDG13] S. Teodoro, A. Silva, R. Dinis, A. Gameiro, “Iterative Interference Alignment Techniques for Broadband Wireless Systems with Limited Feedback,” in Proc. of IEEE ICSPCS’2013, Gold Coast, Australia, Dec. 2013.

[SiDM13] F. Silva, R. Dinis, P. Montezuma, “An Efficient Channel Estimation and Tracking Technique for Single Frequency Networks with SC-FDE Modulations,” in Proc. of IEEE ICSPCS’2013, Gold Coast, Australia, Dec. 2013.

[PDNR13] P. Pedrosa, R. Dinis, F. Nunes, A. Rodrigues, “Decision-directed Estimation of Phase Noise in Iterative Frequency-domain Equalization Schemes,” in Proc. of IEEE ICSPCS’2013, Gold Coast, Australia, Dec. 2013.

[TBDL13a] S. Tomic, M. Beko, R. Dinis, V. Lipovac, “RSS-based Localization in Wireless Sensor Networks using SOCP Relaxation,” in Proc. of IEEE 14th Workshop on Signal Processing Advances in Wireless Communications (SPAWC), Darmstadt, Germany, June 16-19, 2013.

[TBDL13b] S. Tomic, M. Beko, R. Dinis, V. Lipovac, G. Dimic, “RSS-based Localization in Wireless Sensor Networks with Unknown Transmit Power and Path Loss Exponent using SDP Relaxation’’, in Proc. of WSEAS International Conference on Applied Electromagnetics, Wireless and Optical Communications (ELECTROSCIENCE '13), Dubrovnik, Croatia, June 25-27, 2013. ISBN: 978-960-474-308-7.

[OlBV13] 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, Aug. 2013.

[BaVP13a] Norberto Barroca, Fernando J. Velez and Periklis Chatzimisios, “Block Acknowledgment Mechanisms for the optimization of channel use in Wireless Sensor Networks,” in Proc. of PIMRC 2013 – The 24th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, London, United Kingdom, Sep. 2013.

[BSGT13] 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 and Ilangko Balasingham, “Antennas and Circuits for Ambient RF Energy Harvesting in Wireless Body Area Networks,” in Proc. of PIMRC 2013 – The 24th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, London, United Kingdom, Sep. 2013.

2014

[BVBL14] 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,” in Proc. of International Conference on Simulation Tools and Techniques 2014, Lisbon, Portugal, Mar. 2014.

[BoOV14] Luís M. Borges, Rodolfo Oliveira and Fernando J. Velez,Two-Phase Contention Window Control Scheme for Decentralized Wireless Networks,” in Proc. of IEEE Wireless Communications and Networking Conference (WCNC’ 2014), Istambul, Turkey, Apr. 2014.

[FVCR14] Jessica Acevedo Flores, Fernando J. Velez, Orlando Cabral, Daniel Robalo, Olliver Holland, Hamid. H. Aghvami, F. Meucci, A. Mihovska, N. R. Prasad and R. Prasad, “Cost/Revenue Performance in an IMT-Advanced Scenario with Spectrum Aggregation over Non-Contiguous Frequency Bands,” in Proc. of the International Conference on Telecomunications 2014 (ICT 2014), Lisbon , Portugal, May 2014.

[BBST14] Luís M. Borges, Norberto Barroca, Henrique M. Saraiva, Jorge Tavares, Paulo T. Gouveia, Fernando J. Velez, Carol Loss, Rita Salvado, Pedro Pinho, Ricardo Gonçalves, Nuno Borges Carvalho, Raúl Chavéz-Santiago and Ilangko Balasingham, “Design and Evaluation of Multi-Band RF Energy Harvesting Circuits and Antennas for WSNs”, in Proc. of the International Conference on Telecomunications 2014 (ICT 2014), Lisbon , Portugal, May 2014.

[C44-RoVe14] Daniel Robalo, Fernando J. Velez, "A Model for Mapping between the Quality of Service and Experience for Wireless Multimedia Applications", in Proc. of the 2014 IEEE 79th Vehicular Technology Conference (VTC2014-Spring), Seoul, Korea, May 2014.

[SBBT14] Henrique M. Saraiva, Luís M. Borges, Norberto Barroca, Jorge Tavares, Paulo T. Gouveia, Fernando J. Velez, Carol Loss, Rita Salvado, Pedro Pinho, Ricardo Gonçalves, Nuno Borges Carvalho, Raúl Chavéz-Santiago and Ilangko Balasingham, “Experimental Characterization of Wearable Antennas and Circuits for RF Energy Harvesting in WBANs”, in Proc. of the 2014 IEEE 79th Vehicular Technology Conference (VTC2014-Spring), Seoul, Korea, May 2014.

[BBVP14] 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”, accepted for publication in the IEEE International Conference on Communications (ICC 2014), Sidney, Australia, June 2014.

[AML14] A. Furtado, M. Luis, L. Irio, R. Oliveira, R. Dinis, L. Bernardo, “Detection of Licensed Users' Activity in a Random Access Ultra Wideband Cognitive System”, accepted for publication in 2014 IEEE International Conference on Ultra-Wideband, Paris, France, Sep. 2014.

[TBDR14a] S. Tomic, M. Beko, R. Dinis, M. Raspopovic, ``Distributed RSS-based Localization in Wireless Sensor Networks using Convex Relaxation’’, in Proc. of International Conference on Computing, Networking and Communications (ICNC), Hawaii, USA, Feb. 3-6, 2014. http://dx.doi.org/10.1109/ICCNC.2014.6785449

 

Portuguese Conferences

2011

[ROVP11a] D.R. Robalo, J. Oliveira, F. J. Velez, V. Petrini, M. Barbiroli, C. Carciofi, P. Grazioso, F. Fuschini, “Experimental propagation characterisation for WiMAX at 3.5 GHz in different environments”, in Proc. of URSI Seminar of the Portuguese Committee, Lisbon, Portugal, Nov. 2011.

2012

[LODB12] M. Luís, R. Oliveira, R. Dinis, L. Bernardo, “Interference Distribution of a CDMA Cognitive Radio Network,” Doctoral Conference on Computing, Electrical and Industrial Systems (DoCEIS'12), Caparica, Portugal, Feb. 27-29, 2012.

[FeVe12b] João M. Ferro and Fernando J. Velez, “Cost-Based Optimisation of the Routing for Wireless Sensor Networks in the Presence of Mobility,” in Proc. of CONTROLO’12, Madeira Island, Portugal, July 2012.

[BFBT12] Norberto Barroca, João M. Ferro, Luís M. Borges, Jorge Tavares and Fernando J. Velez, “Electromagnetic Energy Harvesting for Wireless Body Area Networks with Cognitive Radio Capabilities”, in Proc. of URSI Seminar of the Portuguese Com., Lisbon, Portugal, Nov. 2012.

2013

[FLOD13] A. Furtado, M. Luis, R. Oliveira, R. Dinis and L. Bernardo, “Channel Availability Assessment for Cognitive Radios”, in Proc. of the 4th Doctoral Conf. on Computing, Electrical and Industrial Systems (DoCEIS’13), Caparica, Portugal, April 15-17, 2013.

[BaGV13b] Norberto Barroca, Paulo T. Gouveia and Fernando J. Velez, “Impact of Switching Latency Times in Energy Consumption of IEEE 802.15.4 Radio Transceivers,” Actas do 7.º Congresso do Comité Português da URSI - ''Um mar sem fronteiras: desafios tecnológicos'', Lisboa, Portugal, Nov. 2013.

[BaVP13b] Norberto Barroca, Fernando J. Velez and Periklis Chatzimisios, “Block Acknowledgment Mechanisms for the optimization of channel use in Wireless Sensor Networks,” Actas do 7.º Congresso do Comité Português da URSI - ''Um mar sem fronteiras: desafios tecnológicos'', Lisboa, Portugal, Nov. 2013.

[TBSB13b] Jorge Tavares, Norberto Barroca, Henrique M. Saraiva, Luís M. Borges, Fernando J. Velez, Caroline Loss, Rita Salvado, Pedro Pinho, Ricardo Gonçalves and Nuno Borges Carvalho, “Spectrum Opportunities for Electromagnetic Energy Harvesting from 350 MHz to 3 GHz,” Actas do 7.º Congresso do Comité Português da URSI - ''Um mar sem fronteiras: desafios tecnológicos'', Lisboa, Portugal, Nov. 2013.

[SBBT13] Henrique M. Saraiva, Norberto Barroca, Luís M. Borges, 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 Devices for RF Energy Harvesting in WBANs,” Actas do 7.º Congresso do Comité Português da URSI - ''Um mar sem fronteiras: desafios tecnológicos'', Lisboa, Portugal, Nov. 2013.

[FlRV13a] Jessica Acevedo Flores, Daniel Robalo, Fernando J. Velez, “Transmitted Power Formulation for the Implementation of Spectrum Aggregation in LTE-A over 800 MHz and 2 GHz Frequency Bands,” Actas do 7.º Congresso do Comité Português da URSI - ''Um mar sem fronteiras: desafios tecnológicos'', Lisboa, Portugal, Nov. 2013.

2014

[Migu14] Miguel Duarte, Antonio Furtado, M. Luis, Luis Bernardo, Rui Dinis and Rodolfo Oliveira, “Practical Assessment of Energy-based Sensing through Software Defined Radio Devices”, in Proc. of the 5th Doctoral Conf. on Computing, Electrical and Industrial Systems (DoCEIS’14), Caparica, Portugal, April 7-9, 2014.

[TBDR14b] S. Tomic, M. Beko, R. Dinis, M. Raspopovic, “Distributed RSS-based Localization in Wireless Sensor Networks with Asynchronous Node Communication” , in Proc. of 5th Doctoral Conference on Computing, Electrical and Industrial Systems (DoCEIS'14), Lisbon, Portugal, Apr. 7-9, 2014. http://dx.doi.org/10.1007/978-3-642-54734-8_57

 

Contributions to COST - TERRA

2011

[TERRA10] F. Meucci, O. Cabral, F. J. Velez, A. Mihovaska and N. R. Prasad, “Spectrum Aggregation with Multi-Band User Allocation over Two Frequency Bands,” 1st Meeting of the Management Committee of COST TERRA- Techno-Economic Regulatory Framework for Radio Spectrum Access for Cognitive Radio Software Defined Radio, WG2,Brussels, Belgium, Aug. 2010.

[TERRA11] O. Cabral, F. Meucci, A. Mihovska, F.J. Velez and N.R. Prasad, “Integrated Common Radio Resource Management with Spectrum Aggregation over Non-Contiguous Frequency Bands,” 2nd Meeting of the Management Committee of COST TERRA- Techno-Economic Regulatory Framework for Radio Spectrum Access for Cognitive Radio Software Defined Radio, WG2, Lisbon, Portugal, Jan. 2011.

[TERRA11a] Oliver Holland, Orlando Cabral, Fernando Velez, Adnan Aijaz, Paul Pangalos and A. Hamid Aghvami, “Opportunistic Load and Spectrum Management for Mobile Communications Energy Efficiency,” 3rd Meeting of the Management Committee of COST TERRA- Techno-Economic Regulatory Framework for Radio Spectrum Access for Cognitive Radio Software Defined Radio, Brussels, WG2, Belgium, Jun. 2011.

[TERRA11b] Daniel Robalo, Fernando J. Velez, “Characterization of Parameters for Wireless Networks Services and Applications,” 3rd Meeting of the Management Committee of COST TERRA- Techno-Economic Regulatory Framework for Radio Spectrum Access for Cognitive Radio Software Defined Radio, WG1, Brussels, Belgium, Jun. 2011.

2012

[COST12d] Norberto Barroca, João M. Ferro, Luís M. Borges, Jorge Tavares and Fernando J. Velez, “Electromagnetic Energy Harvesting for Wireless Body Area Networks with Cognitive Radio Capabilities,”6th Meeting of the Management Committee of COST TERRA- Techno-Economic Regulatory Framework for Radio Spectrum Access for Cognitive Radio Software Defined Radio, WG2, Brussels, Belgium, Nov. 2012.

[COST12e] Jessica Acevedo Flores, Daniel Robalo and Fernando J. Velez, “Transmitted Power Formulation for the Implementation of Spectrum Aggregation in LTE-Advanced over 800 MHz and 2 GHz Frequency Bands,” 6th Meeting of the Management Committee of COST TERRA- Techno-Economic Regulatory Framework for Radio Spectrum Access for Cognitive Radio Software Defined Radio, WG2, Brussels, Belgium, Nov. 2012.

2013

[COST13d] Norberto Barroca, Periklis Chatzimisios and Fernando J. Velez, Block acknowledgement and piggyback mechanisms for the optimization of channel use in wireless sensor networks with cognitive radio capabilities, 7th Meeting of the Management Committee of COST TERRA- Techno-Economic Regulatory Framework for Radio Spectrum Access for Cognitive Radio Software Defined Radio, WG2, Thessaloniki, Greece, Apr. 2013.

[COST13c] Jessica Acevedo Flores, Daniel Robalo and Fernando J Velez, “Cost/Revenue Performance of LTE Employing Spectrum Aggregation with Multi-Band User Allocation over Two Frequency Bands,”.8th Meeting of the Management Committee of COST TERRA- Techno-Economic Regulatory Framework for Radio Spectrum Access for Cognitive Radio Software Defined Radio, WG2, Biel, Switzerland, Nov. 2013.

[COST13e] No âmbito do relatório da STSM de Norberto Barroca a Tessalónica e da missão resultante ao IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs), IEEE 802 Meeting, Dallas, Texas, USA, 14th Nov. 2013, Fernando J. Velez apresentou um resumo do trabalho desenvolvido, sobre Two innovative energy efficient IEEE 802.15.4MAC sub-layer protocols: employing RTS/CTS and multi-channel scheduled channel polling with packet concatenation,” (Norberto Barroca, Luís Miguel Borges, Periklis Chatzimisios and Fernando J. Velez) no 8th Meeting of the Management Committee of COST TERRA em Biel, Switzerland, Nov. 2013.

2014

[COST14] Fernando J. Velez, Multi-band Scheduling and Spectrum Aggregation, the final workshop of COST-TERRA "5 years of CR policy development – lessons learned and the road ahead", Vilnius, Lithuania, 29th April 2014.

 

Contributions to COST - IC0902

2011

[Oliv11] Rodolfo Oliveira, "An Overview of Opportunistic-CR," 4th Meeting of the Management Committee of COST IC0902 - Cognitive Radio and Networking for Cooperative Coexistence of Heterogeneous Wireless Networks, Aachen, Germany, May 2011.

2012

[COST12_f] O. Cabral, F. Meucci, A. Mihovaska, F. J. Velez and N. R. Prasad, “Integrated Common Radio Resource Management with Spectrum Aggregation over Non-Contiguous Frequency Bands”, 7th Management Committee Meeting & 3rd IC0902 Workshop, Ohrid, Macedonia, Sep. 2012.

[COST12_g] António Furtado, Miguel Luís, Rodolfo Oliveira, Luís Bernardo and Rui Dinis, “Interference Caused by Primary Users in a Single-Radio Cognitive Network Scenario,” 7th Management Committee Meeting & 3rd IC0902 Workshop, Ohrid, Macedonia, Sep. 2012.

[COST12f] O. Cabral, F. Meucci, A. Mihovaska, F. J. Velez and N. R. Prasad, “Integrated Common Radio Resource Management with Spectrum Aggregation over Non-Contiguous Frequency Bands”, 7th Management Committee Meeting & 3rd IC0902 Workshop, Ohrid, Macedonia, Sep. 2012.

[COST12g] António Furtado, Miguel Luís, Rodolfo Oliveira, Luís Bernardo and Rui Dinis, “Interference Caused by Primary Users in a Single-Radio Cognitive Network Scenario,” 7th Management Committee Meeting & 3rd IC0902 Workshop, Ohrid, Macedonia, Sep. 2012.

2013

 [COST13f] Miguel Luís, Rodolfo Oliveira, Luís Bernardo and Rui Dinis, “Modeling Heterogeneity of SUs in a Distributed MAC for CRNs,” Final Management Committee Meeting & 4th IC0902 Workshop, Rome, Italy, Oct. 2013.

 

Contributions to COST - IC1004

2011

[COST11] Norberto Barroca, Fernando J. Velez, João M. Ferro, Luís M. Borges, António S. Lebres, “Block Acknowledgment Mechanism for Wireless Sensor Networks,” 1st Scientific Meeting of COST IC 1004 - Cooperative Radio Communications for Green Smart Environments, TD(11)01001, Lund, Sweden, June 2011.

[COST11a] Fernando J. Velez, Maria del Camino Noguera, Oliver Holland and A. Hamid Aghvami, “Fixed WiMAX Profit Maximisation with Energy Saving through Relay Sleep Modes and Cell Zooming,” 2st Meeting of the Management Committee of COST IC 1004 - Cooperative Radio Communications for Green Smart Environments, TD(11)02040, Lisbon, Portugal, October 2011.

2012

[COST12a] O. Cabral, F. Meucci, A. Mihovaska, F. J. Velez and N. R. Prasad, “Integrated Common Radio Resource Management with Spectrum Aggregation over Non-Contiguous Frequency Bands”, 3rd Meeting of the Management Committee of COST IC 1004 - Cooperative Radio Communications for Green Smart Environments, TD(12)03016, Barcelona, Spain, Feb. 2012.

[COST12b] J. M. Ferro and Fernando J. Velez, “Cost-based optimization of the Routing for Wireless Sensor Netwroks in the Presence of Mobility”, 3rd Meeting of the Management Committee of COST IC 1004 - Cooperative Radio Communications for Green Smart Environments, TD(12)03024, Barcelona, Spain, Feb. 2012.

[COST12c] Fernando J. Velez, João Oliveira and Daniel Robalo, Oliver Holland and A. Hamid Aghvami, “Energy Saving in the Optimization of the Planning of Fixed WiMAX with Relays in Hilly Terrains: Impact of Sleep Modes and Cell Zooming”, 5th Meeting of the Management Committee of COST IC 1004 - Cooperative Radio Communications for Green Smart Environments, TD(12)05025, Bristol, UK, Sep. 2012.

2013

[COST13] Jorge Tavares, Norberto Barroca, Henrique M. Saraiva, Luís M. Borges, Fernando J. Velez, Caroline Loss, Rita Salvado, Pedro Pinho, Ricardo Gonçalves and Nuno Borges Carvalho, “Spectrum Opportunities for Electromagnetic Energy Harvesting from 350 MHz to 3 GHz,” 6th Meeting of the Management Committee of COST IC 1004 - Cooperative Radio Communications for Green Smart Environments, TD(13)06078, Málaga, Spain, Feb. 2013.

[COST13f] Norberto Barroca, Fernando J. Velez and Periklis Chatzimisios, “Block Acknowledgment Mechanisms for the optimization of channel use in Wireless Sensor Networks,” 8th Meeting of the Management Committee of COST IC 1004 - Cooperative Radio Communications for Green Smart Environments, TD(13)08057, Ghent, Belgium, Sep. 2013.

[COST13e] 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 and Ilangko Balasingham, “Antennas and Circuits for Ambient RF Energy Harvesting in Wireless Body Area Networks,” 8th Meeting of the Management Committee of COST IC 1004 - Cooperative Radio Communications for Green Smart Environments, TD(13)08068, Ghent, Belgium, Sep. 2013.

[COST13a] Daniel Robalo and Fernando J. Velez, “ Wireless Networks Services and Applications Parameters Characterization and Model for the mapping between the Quality of Service and Experience for multimedia applications ,” 8th Meeting of the Management Committee of COST IC 1004 - Cooperative Radio Communications for Green Smart Environments, TD(13)08069, Ghent, Belgium, Sep. 2013.

2014

[COST13g] Jessica Acevedo Flores, Daniel Robalo, Fernando J. Velez, “Transmitted Power Formulation for the Implementation of Spectrum Aggregation4in LTE-A over 800 MHz and 2 GHz Frequency Bands,” 9th Meeting of the Management Committee of COST IC 1004 - Cooperative Radio Communications for Green Smart Environments, TD(13)09079, Ferrara, Italy, Feb. 2014.

[COST13h] Jessica Acevedo Flores, Fernando J. Velez, Orlando Cabral, Daniel Robalo, Oliver Holland, A. Hamid Aghvami, Filippo Meucci, Albena Mihovska, Neeli R. Prasad and Ramjee Prasad, “Cost/Revenue Performance in an IMT-Advanced Scenario with Spectrum Aggregation Over Non-Contiguous Frequency Bands,” 9th Meeting of the Management Committee of COST IC 1004 - Cooperative Radio Communications for Green Smart Environments, TD(13)09080, Ferrara, Italy, Feb. 2014.

[COST13i] Norberto Barroca, Luís M. Borges and Fernando J. Velez, “IEEE 802.15.4 MAC Layer Performance Enhancement by employing RTS/CTS combined with Packet Concatenation,” 9th Meeting of the Management Committee of COST IC 1004 - Cooperative Radio Communications for Green Smart Environments, TD(13)09079, Ferrara, Italy, Feb. 2014.

 

Talks

[Velez11] Fernando J. Velez, WG2 chair, “WG2: CR/SDR Coexistence Studies in COST-TERRA: Overview and Current Status”, invited speaker in the 11th Meeting of SE 43 (Cognitive radio systems – white spaces, CEPT-ECC), Lisbon, Portugal, 19th Sep. 2011.

[VeMa11] Fernando Velez, WG2 Chair & Marja Matinmikko, WG2 Vice-chair, "CR/SDR Co-existence Studies", invited speakers in the Workshop on CR/SDR Business Scenarios, Regulatory Policy and Standardization (from COST TERRA), in the context of SDR’11-WInnComm-Europe (2011 Wireless Innovation Forum European Conference on Communications Technologies and Software Defined Radio – Driving the Future of Radio Communications and Systems Worldwide), Brussels, Belgium, 22nd June 2011.

[VeAl11] Fernando J. Velez and Helder Alves, “WG2: CR/SDR Coexistence Studies: Overview and Current Status,” Workshop on White Spaces, Instituto de Telecomunicações, Aveiro, portugal, Dec. 2011.

PhD thesis

2011

[Cabr11] Orlando Manuel Brito Cabral, Optimization of the Interoperability and Dynamic Spectrum Management in Mobile Communications Systems Beyond 3G, PhD thesis, Universidade da Beira Interior, Covilhã, Portugal, Sep. 2011.

2013

[Pere13] M. Pereira, “Time Diversity Solutions to Cope With Lost Packets”, PhD Thesis in Electrical Engineering, Univ. Nova de Lisboa, Jan. 2013.

[Borg12]Luís Miguel Moreira Borges, Enhanced Two-phase Contention Window MAC Protocol for Wireless Sensor Networks Applications, PhD Thesis in Electrical and Computer Engineering, Universidade da Beira Interior-Instituto de Telecomunicações, Feb. 2013, Orientação Fernando J. Velez e António Sérgio Lebres.

2014

[Barr14] Norberto José Gil Barroca, Innovative Energy-efficient Wireless Sensor Network Applications and MAC Sub-layer Protocols Employing RTS/CTS with Packet Concatenation, PhD Thesis in Electrical and Computer Engineering, Universidade da Beira Interior-Instituto de Telecomunicações, Jan. 2014.

Msc thesis

2011

[Alve11] Helder Roberto Rodrigues Alves , Cognitive Radio Systems for the Efficient Sharing of TV White Spaces with LTE, MSc thesis, Universidade da Beira Interior, Covilhã, Portugal, Nov. 2011.

2012

[Furt12] A. Furtado, “Análise de Desempenho de Acesso ao Meio em Redes de Rádio Cognitivo”, Dissert. de Mestrado, Univ. Nova de Lisboa, 2012.

[Gonç12] A. Gonçalves, “Controlo de Acesso ao Meio Fiável para Redes ad hoc”, Dissert. de Mestrado, Univ. Nova de Lisboa, 2012.

2013

[Gouv13] Paulo Renato Neves Torres Gouveia, Convergência de Redes Sem Fios para Comunicações M2M e Internet das Coisas em Ambientes Inteligentes, MSc thesis, Universidade da Beira Interior, Covilhã, Portugal, Nov. 2013.

[Sara13] Henrique Morais Saraiva, Desenvolvimento de Dispositivos de Recolha de Energia Electromagnética Integrados em Vestuário e Aplicados a Redes sem Fios de Área Corporal, MSc thesis, Universidade da Beira Interior, Covilhã, Portugal, Nov. 2013.

 [Este13] Francisco Manuel de Oliveira Esteves, “Implementation of a Cognitive Radio Access System”, Dissert. de Mestrado, Univ. Nova de Lisboa, Monte da Caparica, Portugal, 2013.

[Irio13] Luis Miguel do Rosário Irio, “Mobilidade em Redes de Rádio Cognitivo”, Dissert. de Mestrado, Univ. Nova de Lisboa, Monte da Caparica, Portugal, 2013.

[Duar14] Miguel Filipe Batista Duarte, “Spectrum Sensing Through Software Defined Radio”, Dissert. de Mestrado, Univ. Nova de Lisboa, Monte da Caparica, Portugal, 2014.

 

Awards

Fernando Velez, menção honrosa no Prémio ANACOM URSI Portugal 2011", com o trabalho “Fixed WIMAX Profit Maximisation with Energy Saving Through Relay Sleep Modes and Cell Zooming “, Nov. 2011.

Seminars

Organization of the Seminar “Iterative Processing for Cooperative Communications Allowing Intra-Link Errors”, by Prof. Tad Matsumoto (distinguished lecturer da VTS Society) and Prof. Khoirul Anwar (both from JAIST – Japan Advanced Institute of Science and Technology), Instituto Superior Técnico, Lisbon, Portugal, 18 Out. 2011 (15 people attended).

Organization of the Seminar “Coexistencia entre sistemas primarios na banda UHF: Microphones sem fios vs. DVB-T (SEAMCAT)”, by Prof. Rogério Dionsio (Instituto Politécnico de Castelo Branco), Universidade da Beira Interior, Covilhã, Portugal, 20 Jul. 2011 (6 people attended).

Reports

2012

[EsOB12] Francisco Esteves, Rodolfo Oliveira and Luís Bernardo, MadWiFi Implementation Assessment for A Cognitive Radio Scenario ,” UNINOVA/FCT/UNL, PTDC/EEA-TEL/115981/2009, Dec 2012.

FlRV12] 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, Instituto de Telecomunicações, PTDC/EEA-TEL/115981/2009, Nov 2012.

[RVCC12] Daniel Robalo, Fernando J. Velez, Orlando Cabral, Marilia Curado, Susana Sargento, Deployment Scenarios and Characterization Parameters for Concatenated Multiple Mesh Networks Applications, Instituto de Telecomunicações, PTDC/EEA-TEL/115981/2009, Covilhã, Portugal, Jan. 2012.

[RoVe12] Daniel Robalo, Fernando Velez, Report on a unified model for the mapping between the Quality of Service and Experience in multimedia applications, Instituto de Telecomunicações, Covilhã, Portugal, Mar. 2012.

[HNNM12] Oliver D Holland, Luca De Nardis, Keith Nolan , Arturas Medeisis, Peter Anker, Leo Minervini, Fernando J. Velez, Marja Matinmikko, John Sydor, “Pluralistic Licensing: The Core Concept and its Application to Next Generation Networks,” COST TERRA Internal Report, Oct. 2012.

2013

[MAD2013] Madwi's Test Framework Implementation, Technical Report, UNINOVA, June 2013.

 

Laboratory Prototypes

  • LABmac – development of a testbed to characterize cognitive contention-based medium access control.

Computational Applications

  • Multi-Channel-SCP MAC (MC-SCP-MAC) protocol implementation in the MiXiM Framework from OMNeT++.
  • Sensor Block Acknowledgment MAC (SBACK-MAC) protocol implementation in the MiXiM Framework from OMNeT++.
  • Mathematica© program for the computation of the Unified model for the mapping between the Quality of Service and Experience in multimedia applications.
  • Mathematica© program for the computation of the average SINR within a LTE-A cell.
  • Mathematica© program for the computation of the SINR as a function of distance for LTE-A systems.
  • Mathematica© program for the computation of the transmitter power for different cell radii and constant SINR.
  • Matlab© package for single radio cognitive network simulation.
  • Matlab© package for characterization of the performance of a single radio cognitive network.
  • Matlab© package for simulation of a realistic energy-based sensing.
  • NS-2© code for simulating a contention-based cognitive radio able to estimate the activity of the primary users.
  • Matlab© collision Probability Model for a Two-Phase Contention Scheme for Scheduled Channel Polling
  • Matlab© double Stage Random Access Scheme for Decentralized Single Radio Cognitive Networks
  • Omnet ++ Frame Capture and Reliability Based Decider Implementation in the MiXiM IEEE 802.15.4 Framework
  • LTE-Sim – ICRRM entity for Spectrum Aggregation in LTE-A over 800 MHz and 2.6 GHz Frequency Bands

Models

  • Formulation for average signal to interference-plus noise ratio applied to the Implementation of Spectrum Aggregation in LTE-A over 800 MHz and 2 GHz Frequency Bands.
  • Collision Probability Model for a Two-Phase Contention Scheme for Scheduled Channel Polling.
  • Unified model for the mapping between the Quality of Service and Experience in multimedia applications.
  • Model for the interference caused to PUs in a single-radio cognitive network.
  • Model for the throughput achieved by Sus in a single-radio cognitive network.
  • Model for a realistic energy-based detection process.
  • A Double Stage Random Access Scheme for Decentralized Single Radio Cognitive Networks
  • Frame Capture and Reliability Based Decider Implementation in the MiXiM IEEE 802.15.4 Framework
  • Formulation for average signal to interference-plus noise ratio applied to the Implementation of Spectrum Aggregation in LTE-A over 800 MHz and 2.6 GHz Frequency Bands

Organization of Workshops and Seminars

Workshop 20 Years of Instituto de Telecomunicações (10th Anniversary of IT-Covilhã), Faculdade de Engenharia, Universidade da Beira Interior (UBI), Maio 2012. The audience included 75 attendees. The following divulging article was published:

Fernando J. Velez, Abel Gomes and Carlos Salema, “Highlights on the Workshop 20 Years of Instituto de Telecomunicações (Tenth Anniversary of IT-Covilhã),” IEEE Vehicular Technology Magazine (Society News), Vol. 7, No. 4, Dec. 2012.

Organization of the Seminar “Iterative Processing for Cooperative Communications Allowing Intra-Link Errors”, by Prof. Tad Matsumoto (distinguished lecturer da VTS Society) and Prof. Khoirul Anwar (both from JAIST – Japan Advanced Institute of Science and Technology), Instituto Superior Técnico, Lisbon, Portugal, 18 Out. 2011 (15 people attended).

Organization of the Seminar “Coexistencia entre sistemas primarios na banda UHF: Microphones sem fios vs. DVB-T (SEAMCAT)”, by Prof. Rogério Dionsio (Instituto Politécnico de Castelo Branco), Universidade da Beira Interior, Covilhã, Portugal, 20 Jul. 2011 (6 people attended).

Workshop 20 Years of Instituto de Telecomunicações (10th Anniversary of IT-Covilhã), Faculdade de Engenharia, Universidade da Beira Interior (UBI), May 2012 (there were 75 attendees) . The following divulging article was published:

  • Fernando J. Velez, Abel Gomes and Carlos Salema, “Highlights on the Workshop 20 Years of Instituto de Telecomunicações (Tenth Anniversary of IT-Covilhã),” IEEE Vehicular Technology Magazine (Society News), Vol. 7, No. 4, Dec. 2012.

Organisation of the 16º Seminário da RTCM – Rede Temática de Comunicações Móveis, Universidade da Beira Interior, Covilhã, Portugal, 15th Fe b. 2013 (there were 50 attendees).

Support of the organisation of the 17º Seminário da RTCM – Rede Temática de Comunicações Móveis, Faculdade de Ciências da Universidade do Porto, Porto, Portugal, 19th Jul. 2013 (there were 45 attendees).

Support of the organisation of the I Mini Jornadas de Engenharia Electrotécnica e de Computadores, Departamento de Engenharia Electromecânica, Faculdade de Engenharia, Universidade da Beira Interior, Covilhã, Portugal, 14th Nov. 2013 (there were 60 attendees).

Organisation of the 1st Workshop from the CREaTION Project in Research Lines of Excellence (um evento da Semana de C&T do Ciência Viva), Instituto de Telecomunicações, Departamento de Engenharia Electromecânica, Faculdade de Engenharia (Sala dos Conselhos, manhã), Faculdade de Ciências da Saúde (Anfiteatro Verde, almoço e tarde), Universidade da Beira Interior, 18th Nov. 2013 (there were 50 attendees).

Organisation of the Seminar on Vehicular and Distributed Cognitive Radio Networks, M2M Communications and Internet of Everything, Instituto de Telecomunicações, Departamento de Engenharia Electromecânica, Faculdade de Engenharia (Sala dos Conselhos), Universidade da Beira Interior, 25th Nov. 2013 (there were 35 attendees).

Organisation of the Machine-to-Machine and Internet of Everything: Standardization and research challenges, Instituto de Telecomunicações – Covilhã, Faculdade de Engenharia da Universidade da Beira Interior, 14 th Jan. 2014 (there were 30 attendees).

Organization of The Final workshop of COST-TERRA "5 years of CR policy development – lessons learned and the road ahead", which was held 29 April 2014 in Vilnius, Lithuania.

Organisation of the International Conference on Telecommunications 2014, Lisbon, May 2014 (technically sponsored by IEEE ComSoc). The members from OPPORTUNISTIC-CR were TPC co-chairs, EDAS co-chairs and organized the following initiatives:

  • Keynote speeches:
  1. Prof. Lajos Hanzo, Large-Scale MIMOs, Coherent versus Non-Coherent Detection and the Spatial Modulation Saga
  2. Prof. Elvino de Sousa, Future Cellular Systems: A Unified Infrastructure and Spectrum Framework
  • Tutorials:
  1. Dr. Periklis Chatzimisios, Dr. Athanassios Iossifides, ΙΕΕΕ 802.11... Long Live the King (moving from WiFi to 5G)
  2. Giusepe Piro , The LTE-Sim simulator

Posters

Miguel Luís, António Furtado, Rodolfo Oliveira, Rui Dinis, Luis Bernardo, “Energy Sensing Parameterization Criteria for Cognitive Radios”, Poster apresentado na Summer School em Cognitive Radio, no âmbito do projecto COST IC 0902, Paris, Julho 2012.

 

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