Research

Journal articles

  1. Distance estimation in OFDM inter-satellite links
    A.M. Crisan, A. Martian, R. Cacoveanu, D. Coltuc
    Measurement (Elsevier), Volume 154, pp. 107479, March 2020.
    Article Science Direct
  2. Angle-of-Arrival Estimation in Formation Flying Satellites: Concept and Demonstration
    A.M. Crisan, A. Martian, R. Cacoveanu, D. Coltuc
    IEEE Access, Volume 7, pp. 114116 – 114130, August 2019.
    Article IEEE Xplore
  3. Real-time spectrum sensing using software defined radio platforms
    A. Martian
    Telecommunication Systems (Springer), Volume 64, Issue 4, pp. 749–761, April 2017.
    Article SpringerLink
  4. Energy Detection Algorithm for Spectrum Sensing Using Three Consecutive Sensing Events
    C. Vladeanu, C.V. Nastase, A. Martian
    IEEE Wireless Communications Letters, vol. 5, issue 3, pp. 284-287, June 2016.
    Article IEEE Xplore
  5. Access to RF White Spaces in Romania: Present and Future
    A. Martian, R. Crăciunescu, A. Vulpe, G. Suciu, O. Fratu
    Wireless Personal Communications (Springer), vol. 86, issue 3, pp. 693-702, April 2016. SpringerLink
  6. Big Data Processing for Renewable Energy Telemetry Using a Decentralized Cloud M2M System
    G. Suciu, A. Vulpe, A. Martian, S. Halunga, D.N. Vizireanu
    Wireless Personal Communications (Springer), vol. 86, issue 3, pp. 1113-1128, April 2016.
    SpringerLink
  7. Big Data, Internet of Things and Cloud Convergence – An Architecture for Secure E-Health Applications
    G. Suciu, V. Suciu, A. Martian, R. Craciunescu, A. Vulpe, I. Marcu, S. Halunga, O. Fratu
    Journal of Medical Systems (Springer), vol. 39, no. 11, pp. 1-8, September 2015.
    SpringerLink
  8. Evaluation of Spectrum Occupancy in Urban and Rural Environments of Romania
    A. Martian
    Revue Roumaine des Sciences Techniques – Serie Electrotechnique et Energetique, issue 1, pp 87-96, 2014.
    Article
  9. Evaluation of Spectrum Occupancy in an Urban Environment in a Cognitive Radio Context
    A. Martian, C. Vladeanu, I. Marcu, I. Marghescu
    International Journal On Advances in Telecommunications (IARIA), ISSN 1942-2601, vol. 3, no. 3&4, pp 172-181, 2010.
    Article
  10. Radio Coverage Analysis for Mobile Communication Networks using ICS Telecom
    F. Almajanu, C.V. Nastase, A. Martian, I. Marghescu
    Scientific Bulletin UPB, Seria C, vol.78, issue 2, pp.177-190, 2016.
    Article
  11. Convolutional Turbo Encoding Improvements For Different Multiuser Detection Algorithms In Unperferct Reception Conditions
    I. Marcu, S. Halunga, I. Pirnog, A. Martian, C. Oprea
    Scientific Bulletin UPB, Seria C, vol.73, issue 4, pp.181-196, 2011.
    Article

Conference proceedings

  1. An Amplify-and-Forward Cooperative Spectrum Sensing Algorithm Using Three Secondary Users for Cognitive Radio
    C. Vladeanu, M.J. Ahmad Al Sammarraie, A. Martian
    Proceedings 14th International Symposium on Signals, Circuits and Systems (ISSCS2019), pp. 1-4, Iasi, Romania, July 2019.
    IEEE Xplore
  2. On the introduction of 5G networks in Romania
    A. Martian, C. Vladeanu, M.J. Ahmad Al Sammarraie
    Proceedings 14th International Conference on Digital Telecommunications (ICDT2019), pp. 8-11, Valencia, Spain, March 2019.
    Best Paper Award Article
  3. A Modified 3EED Spectrum Sensing Algorithm Using an Adaptive Decision Threshold
    M.J. Ahmad Al Sammarraie, A. Martian, C. Vladeanu
    Proceedings 13th International Symposium on Electronics and Telecommunications (ISETC2018), pp. 1-4, Timisoara, Romania, November 2018.
    IEEE Xplore
  4. Inter-Satellite Radio Frequency Ranging in a Hybrid OFDM Communication-Metrology System
    A.M. Crisan, A. Martian, D. Coltuc
    Proceedings 15th IEEE Workshop on Positioning, Navigation and Communications (WPNC2018), pp. 1-5, Bremen, Germany, October 2018.
    IEEE Xplore
  5. Spectrum Sensing Based on Energy Detection Algorithms Using GNU Radio and USRP for Cognitive Radio
    C. Nastase, A. Martian, C. Vladeanu, I. Marghescu
    Proceedings 12th International Conference on Communications (COMM2018), pp. 381-384, Bucuresti, Romania, June 2018.
    IEEE Xplore
  6. Adaptive IED Spectrum Sensing Algorithm for Different Duty Cycle Values
    M.J. Al Sammarraie, A. Martian, C. Vladeanu,
    Proceedings 12th International Conference on Communications (COMM2018), pp. 51-54, Bucuresti, Romania, June 2018.
    IEEE Xplore
  7. DVB-T2 radio coverage analysis in Romania
    A. Martian, M. Dambeanu, C. Oprea, C. Vladeanu, I. Marghescu
    Proceedings 25th Telecommunication Forum (TELFOR2017), pp. 1-4, Belgrade, Serbia, November 2017.
    IEEE Xplore
  8. Pesticide Telemetry Using Potentiostat
    G. Suciu, A. Ganaside, L. Bezdedeanu, R. Coanca, S. Secu, C. Nădrag, A. Martian
    in Fratu O., Militaru N., Halunga S. (eds) Future Access Enablers for Ubiquitous and Intelligent Infrastructures. FABULOUS 2017. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 241, 2018, pp 58-63.
    SpringerLink
  9. Microwave antenna array using new dielectric resonator antenna elements
    M. G. Banciu, N. Militaru, A. Martian, I. Nicolaescu, L. Tuta, D. C. Geambasu, L. Nedelcu, L. Trupina, R. Ramer
    Proceedings 2017 International Semiconductor Conference (CAS), pp. 129-132, Sinaia, Romania, October 2017.
    IEEE Xplore
  10. Relative orientation estimation in formation flying satellites
    A. M. Crisan, A. Martian, D. Coltuc
    Proceedings 2017 International Symposium on Signals, Circuits and Systems (ISSCS), pp. 1-4, Iasi, Romania, July 2017.
    IEEE Xplore
  11. On the Compromise between Delay and Performance of the Three-Event Energy Detection Algorithm in Cognitive Radio Systems
    A. Martian, C. Vladeanu
    Proceedings 12th International Symposium on Electronics and Telecommunications (ISETC16), pp. 111-115, Timisoara, Romania, October 2016.
    IEEE Xplore
  12. Design and development of a satellite on-board communication system with navigation capabilities
    P. Bajenaru, C. Chitu, R. Cacoveanu, A. Crisan, A. Martian
    Proceedings 67th International Astronautical Congress (IAC2016), pp. 1-8, Guadalajara, Mexico, September 2016.
    Scopus
  13. USRP-based Experimental Platform for Energy Detection in Cognitive Radio Systems
    E.I. Dobre, A. Martian, C. Vladeanu
    Proceedings 11th International Conference on Communications COMM2016, pp. 191-194, Bucharest, Romania, June 2016.
    IEEE Xplore
  14. Evaluation of Synchronization Techniques for Inter-satellite Links
    A.M. Crisan, A. Martian, R. Cacoveanu, D. Coltuc
    Proceedings 11th International Conference on Communications COMM2016, pp. 475-480, Bucharest, Romania, June 2016.
    IEEE Xplore
  15. Comparative study of Radio Mobile and ICS Telecom propagation prediction models for DVB-T
    O. Fratu, A. Martian, R. Craciunescu, A. Vulpe, S. Halunga, P. Lazaridis, Z. Zaharis, S. Kasampalis
    Proceedings 10th IEEE International Symposium on Broadband Multimedia Systems and Broadcasting (BMSB 2015), Ghent, Belgium, June 2015.
    IEEE Xplore
  16. An Accurate Average Energy Detection Algorithm for Spectrum Sensing in Cognitive Radio Systems
    C.V. Nastase, A. Martian, C. Vladeanu, I. Marghescu
    Proceedings 11th International Symposium on Electronics and Telecommunications (ISETC14), pp.131-134, Timisoara, Romania, November 2014.
    IEEE Xplore
  17. Spectrum Sensing based on Spectral Correlation for Cognitive Radio Systems
    A. Martian, B.T. Sandu, O. Fratu, I. Marghescu. R. Craciunescu
    Proceedings Global Wireless Summit WirelessVitae2014, pp.1-4, Aalborg, Denmark, May 2014.
    IEEE Xplore
  18. Real-time Spectrum Sensor based on USRP
    A. Martian
    Proceedings 10th International Conference on Communications (COMM2014), pp. 429-432, Bucharest, Romania, May 2014.
    IEEE Xplore
  19. Data Collection for Spectrum Sensing Algorithms based on USRP
    V.C. Stanciu, A. Martian, C. Socoteanu, I. Marghescu
    Proceedings 10th International Conference on Communications (COMM2014), pp. 403-406, Bucharest, Romania, May 2014.
    IEEE Xplore
  20. Cognitive radio testing framework based on USRP
    A. Martian, L. Petrică, O. Radu
    Proceedings 21st Telecommunications Forum (TELFOR) 2013, pp. 212-215, Belgrade, Serbia, November 2013.
    IEEE Xplore
  21. Network Cloud simulator for modelling trust in Cognitive Radio applications
    G. Suciu, C. Voicu, G. Todoran, A. Martian, S. Halunga, C. Butca
    Proceedings 21st Telecommunications Forum (TELFOR 2013), pp. 345-348, Belgrade, Serbia, November 2013.
    IEEE Xplore
  22. Perspectives on Dynamic Spectrum Access Procedures in TV White Spaces
    A. Martian, R. Craciunescu, A. Vulpe, O. Fratu, I. Marghescu
    Proceedings 16th International Symposium on Wireless Personal Multimedia Communications (WPMC2013), pp 1-5, Atlantic City, New Jersey, USA, June 2013.
    IEEE Xplore
  23. Spectral Occupancy Measurements in Rural and Urban Environments: Analysis and Comparison
    A. Martian, C. Vladeanu, O. Fratu, I. Marghescu, S. El Assad
    Proceedings 9th Advanced International Conference on Telecommunications (AICT 2013), pp 78-83, Rome, Italy, June 2013.
    Best Paper Award Article 
  24. Transition from Analog to Digital Broadcasting: A spectral efficiency review
    E. Zainea, A. Martian, I. Marcu, O. Fratu
    Proceedings 10th International Symposium on Electronics and Telecommunications (ISETC12), pp. 171-175, Timisoara, Romania, November 2012.
    IEEE Xplore
  25. A New ML Detector for Trellis-Coded Spatial Modulation Using Hard and Soft Estimates
    C. Vladeanu, A. Martian, A.F. Paun, S. El Assad
    Proceedings 10th International Symposium on Electronics and Telecommunications (ISETC12), pp. 143-147, Timisoara, Romania, November 2012.
    IEEE Xplore
  26. EXIT Charts Analysis for Turbo-TCM Schemes Using Non-Binary RSC Encoders
    C. Vladeanu, A. Martian, S. El Assad
    Proceedings 8th Advanced International Conference on Telecommunications (AICT 2012), pp. 150-155, Stuttgart, Germany, May 2012.
    Article
  27. On the QAM Parallel Turbo-TCM Schemes using Recursive Convolutional GF(2N) Encoders
    A.F. Paun, C. Vladeanu, I. Marghescu, S. El Assad, A. Martian
    Proceedings 18th European Signal Processing Conference (EUSIPCO 2010), Aalborg, Denmark, August 2010.
    IEEE Xplore
  28. Analysis of frequency spectrum usage from a cognitive radio perspective
    A. Martian, A. Achim, O. Fratu, I. Marghescu
    Proceedings 3rd International Workshop on Cognitive Radio and Advanced Spectrum Management (COGART 2010), Rome, Italy, November 2010.
    IEEE Xplore
  29. On the Availability of CDMA Channels for Secondary Users
    O. Fratu, S. Halunga, C. Perju, A. Martian, I. M. Marcu
    Proceedings 3rd International Workshop on Cognitive Radio and Advanced Spectrum Management (COGART 2010), Rome, Italy, November 2010.
    IEEE Xplore
  30. Spectrum Occupancy in an Urban Environment: A Cognitive Radio Approach
    A. Martian, I. Marcu, I. Marghescu
    Proceedings 6th Advanced International Conference on Telecommunications (AICT 2010), pp. 25-29, Barcelona, Spain, May 2010.
    IEEE Xplore

Books

  1. Utilizarea eficientă a spectrului de radiofrecvență. Evaluarea stadiului actual și perspective
    A. Martian
    Ed. Politehnica Press, București, România, 2017. (ISBN 978-606-515-781-1)
  2. Comunicații mobile: aspect teoretice și experimentale
    I. Marcu, C. Oprea, A. Marțian, O. Fratu, I. Marghescu
    Ed. Politehnica Press, București, România, 2018. (ISBN 978-606-515-837-5)

Book chapters

  1. Performance Analysis of MUSIC and Capon DOA Estimation Algorithms in Cognitive Radio Networks
    C.V. Nastase, O. Fratu, A. Martian, I. Marghescu
    in Future Access Enablers for Ubiquitous and Intelligent Infrastructures (Springer), Volume 159 of the series Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering pp 142-148, December 2015.
    SpringerLink

Posters / Presentations

  1. A. Martian, Prototyping of a system for synchronization, positioning and communication of two satellites that fly in formation“, NIDays, Bucharest, Romania, October 2016.
  2. A. Martian, R. Craciunescu, A. Vulpe, O. Fratu, Access to RF White Spaces in Romania: Present and Future, 3rd Annual CTIF-SEE Meeting, Bucharest, Romania, 11-12 September 2014.
  3. A. Martian, R. Craciunescu, B.T. Sandu, O. Fratu, “UHF Broadcasting in Romania”, 3rd IEEE BTSGOLD WORKSHOP, Brasov, Romania, 19-20 May 2014.
  4. A. Rusu-Casandra, A. Paun, B. Mocanu, R. Tapu, A. Martian, C. Stanciu, R. Badea, “Comparison of software-defined Galileo E1 receiver architectures”, 6th International Colloquium – Scientific and Fundamental Aspects of GNSS / Galileo, 25-27 October 2017, Valencia, Spain.

Research projects

  1. “RF spectrum occupancy evaluation system for the introduction of 5G networks (SPECTRUM-5G)”, research project UEFISCDI, PN-III P1-1.1-PD-2016, no. PD154/10.10.2018, project manager A. Martian (2018-2020), project website: http://spectrum5g.radio.pub.ro.
  2. “RF spectrum sensing system (DET-RF)”, research grant UPB-GEX2017, nr. 34/25.09.2017, grant manager A. Martian (2017-2018).
  3. “Sistem informatic integrat pentru managementul activităților (SIIMA)”, UEFISCDI Solutions research project nr. 8Sol/2018, project manager O. Fratu (2018-2021).
  4. “Platform of multi-agent intelligent systems for water quality monitoring on the romanian sector of Danube and of the Danube Delta (MultiMonD2)”, UEFISCDI CDI Complex Project nr. 33PCCDI/2018, project manager O. Fratu (2018-2020).
  5. “Telemetry system for inteligent agriculture (SmartAgro)”, subsidiary contract nr. 8592 / 08.05.2018 from the project ”Ecosistem de cercetare, inovare și dezvoltare de produse și servicii TIC pentru o societate conectată la Internet of Things – NETIO” cod MySmis 105976, Programul Operațional Competitivitate 2014-2020, Axa prioritară 1: Cercetare, dezvoltare tehnologică și inovare (CDI) în sprijinul competitivității economice și dezvoltării afacerilor, Domeniul major de intervenţie: Parteneriate pentru transfer de cunoștințe, contract nr. 53/05.09.2016, UPB responsible I. Marcu (2018-2020).
  6. “Platformă software integrată pentru analiza malware a terminalelor mobile (ToR-SIM)”, UEFISCDI Solutions research project nr. 5Sol/2017, project manager O. Fratu (2017-2020).
  7. eWall for Active Long Living (eWALL), FP7 project nr. 610658, financed by the European Commission, project manager Ramjee Prasad (2013-2016).
  8. “Galileo Vector Processing for Difficult signal Conditions (GavPro)”, ESA EGEP programme, project manager Alexandru Rusu (2015-2016).
  9. “Modeling hybrid communication-navigation systems for formation flying satellites (HybridNAVCOM),” CDI research project no. 363-2013 financed by the Romanian Space Agency (ROSA), project manager Remus Cacoveanu (2015-2016).
  10. “Advanced antennas for space communications (ADANSPACE),” CDI research project no. 240-2013 financed by the Romanian Space Agency (ROSA), project manager Mihai Banciu (2013-2016).
  11. “Scalable Radio Transceiver for Instrumental Wireless Sensor Networks (SaRaT-IWSN), PCCA UEFISCDI research project, project manager Simona Halunga (2012-2016).
  12. “Detection systems for cosmic radiation using new technologies (DETCOS),” UEFISCDI PNCDI II contract no. 82-104/01.10.2008, project manager Octavian Fratu (2008-2011).
  13. “Hybrid wireless access system with unique addressing (SAWHAU),” PNCDI II Partnerships research project no. 12-126/01.10.2008, project manager Octavian Fratu (2008-2011).
  14. New convolutional coding schemes with reduced complexity operating over higher order Galois fields for channel error correction,” CNCSIS-UEFISCSU research project, PN-II-RU-TE, no. 18/12.08.2010, project manager Călin Vlădeanu (2010-2013).
  15. “Evolution, implementation and transition arrangements for DVB digital broadcasting in terms of efficient use of the frequency spectrum (DVB),” Reference Terms contract no. 106/08.08.2011, project manager Octavian Fratu (2011-2014).
  16. Cognitive Radio Technology and the efficient use of RF spectrum,” CNCSIS-UEFISCSU research project, PN-II-IDEI, no. 116/01.10.2007, project manager Ion Marghescu (2007-2010).

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