Departamentul de Comunicatii
HOME > PERSONAL > DEPARTAMENT : Maria Kovaci
Maria Kovaci    
Lecturer          


adresa departament  Room B228, 2ndFloor
Bd. Vasile Parvan, nr. 2
300223 Timisoara, Romania
telefon  (0040) 256-40-3308
fax  -
adresa email maria.kovaci@upt.ro






Personal Information

  • Date/Place of Birth: 06.08.1972 / Timisoara

    Studies

    • 2009 Ph. D. in Electronics and Telecommunications;
    • 1999 – 2001 Two years Master, University “Politehnica” of Timisoara, Faculty of Electronic and Telecommunications, Specialization “PNAST”;
    • 1998 - 1999 One year french language Master, University “Politehnica” of Timisoara, Faculty of Electronic and Telecommunications, Specialization “Traitement du Signal”;
    • 1993 – 1998 University “Politehnica” of Timisoara, Faculty of Electronic and Telecommunications, Specialization “Communications”;
    • 1991 – 1993 "Industrial nr.3" two-years post High School of Timisoara, Departement of “Telecommunications, Technician”;
    • 1987 – 1991 "Industrial nr.3" High School of Timisoara, Department of “Electrical-Electronist in Telecommunications”.

    Experience

    • October 2013 - present, Lecturer at the Department of Communication, Faculty of Electronic and Telecommunications, UPT.
    • February 2002 - September 2013, Assist. Prof. at the Department of Communication, Faculty of Electronic and Telecommunications, UPT.
    • October 2000 - present PhD Student at the Department of Communications, Faculty of Electronic and Telecommunications, UPT.
    • September 1999 - present Editorial Secretary of the Scientific Bulletin of the “POLITEHNICA” University of Timisoara, Romania, Transactions on Electronics and Communications.
    • September 1999 - february 2002 Teaching Assistant at the Department of Communication, Faculty of Electronic and Telecommunications, UPT.

    Recent Publications

Thesis

  1. Kovaci Maria, Ph.D. Thesis, " Contributii la analiza si imbunatatirea performantelor turbo codurilor in canale cu fading plat", 2009, coordinator prof. Miranda Nafornita, in Romanian, Politehnica Publishing House, 158 pages, ISSN 1842-7014/ISBN 978-973-625-994-4.
    Foarte bine Scientific referents: prof. Monica Borda (Technical University Cluj-Napoca), conf. Carmen Cerigan (Universitatea Transilvania din Brasov), prof. Alexandru Isar (Politehnica University, Timisoara).
  2. Books

    1. Alexandru Isar, Maria Kovaci, " Securitatea retelelor de calculatoare", 2011, in Romanian, Politehnica Publishing House, 288 pages, ISBN 978-606-554-414-7.

      Journal Articles

      1. Kovaci Maria, Balta Horia " A study on turbo coded 16-QAM bit allocation in Rice flat fading channel ", Procedia Computer Science, Vol.56, 2015, pp.300-308, ISSN 1877-0509
      2. Maria Kovaci, Horia Balta " Performance of Turbo Encoders with 64-QAM Modulators Interfacing Systems in Fading Environment ", Scientific Bulletin of the Politehnica University of Timisoara-TRANSACTIONS on ELECTRONICS and COMMUNICATIONS, Vol.60(74), Issue 1, 2015, pp.27-32, ISSN 1583-3380.
      3. Kovaci Maria, Balta Horia, " Turbo Coding over Nakagami-m Fading Channels", International Journal of Advancements in Electronics and Electrical Engineering-IJAEEE, Volume: 4, Issue: 1, Pages: 43-47, Published: 30 April, 2015, ISSN: 2319-7498, Link: The original publication is available at: www.seekdl.org (pdf)
      4. Balta Horia, Isar Alexandru, Isar Dorina, Kovaci Maria, Balint Cornel " The Mirror Equivalence Concept of Convolutional Codes and Turbo-Codes ", Journal of Communication and Computer, Boston, United States, 2012, pp.852-861, ISSN 1548-7709.
      5. Mountassir Jamal, Balta Horia, Oltean Marius, Kovaci Maria, Isar Alexandru " Simulating the WiMAX Physical Layer in Rayleigh Fading Channel", Journal of Wireless Networking and Communications, Vol.1 No. 1, 2011, pp.1-7.
      6. Balta Horia, Isar Alexandru, Lucaciu Radu, Nafornita Miranda, Kovaci Maria " 752 Length ARP and QPP Interleavers for 16-state Duo Binary Turbo Codes", Electrorevue Journal, ISSN 1213-1539, Vol.2 No. 4, 2011, pp.79-85.
      7. Horia Balta, Alexandre De Baynast, Maria Kovaci " On the Encoding of the Multi-Non-Binary Convolutional Codes", Buletinul Stiintific al Universitatii „Politehnica” Timisoara, Seria Electronica si Telecomunicatii, Tom 53-67 Electronica si Telecomunicatii, Fascicola 2, 2008, pp.183-188.
      8. Marius Oltean, Maria Kovaci, Horia Balta, Andrei Campeanu " Multi Binary Turbo Coded WOFDM Performance in Flat Rayleigh Fading Channels", Acta Technica Napocensis – Electronics and Telecommunications, Volum 29, Nr.3/2008, ISSN: 1221-6542, pp.11-16.
      9. Horia Balta, Daniel Bosneagu, Maria Kovaci, Marius Oltean " A Study of the Permutation Schemes Used in the Mobile WIMAX", Acta Technica Napocensis – Electronics and Telecommunications, Volum 29, Nr.3/2008, ISSN: 1221-6542, pp.17-20.
      10. Maria Kovaci, Alexandre De Baynast, Horia Balta, Miranda Nafornita " Performance of Multi Binary Turbo-Codes on Nakagami Flat Fading Channels", Buletinul Stiintific al Universitatii „Politehnica” Timisoara, Seria Electronica si Telecomunicatii, Tom 51-65 Electronica si Telecomunicatii, Fascicola 2, 2006, pp.140-145.
      11. Horia Balta, Maria Kovaci, Alexandre De Baynast, Calin Vladeanu, Radu Lucaciu " A Very General Family of Turbo-Codes: The Multi-Non-Binary Turbo-Codes", Buletinul Stiintific al Universitatii „Politehnica” Timisoara, Seria Electronica si Telecomunicatii, Tom 51-65 Electronica si Telecomunicatii, Fascicola 2, 2006, pp.113-118.
      12. Horia Balta, Catherine Douillard, Maria Kovaci " The Minimum Likelihood APP Based Early Stopping Criterion for Multi-Binary Turbo Codes", Buletinul Stiintific al Universitatii „Politehnica” Timisoara, Seria Electronica si Telecomunicatii, Tom 51-65 Electronica si Telecomunicatii, Fascicola 2, 2006, pp.199-203.
      13. Maria Kovaci, Horia Balta, Miranda Nafornita " Performance of Multi Binary Turbo Codes on Rayleigh Flat Fading Transmission Channels", Analele Universitatii din Oradea, Fascicola Electrotehnica, Sectiunea Electronica, 2006, pp. 64-67.
      14. Horia Balta, Maria Kovaci, Miranda Nafornita " Performance of Multi Binary Turbo Codes on Rice Flat Fading Channels", Analele Universitatii din Oradea, Fascicola Electrotehnica, Sectiunea Electronica, 2006, pp. 17-20.
      15. Horia Balta, Maria Kovaci, Miranda Nafornita " A New Method for the Simulation of the Nakagami Flat Fading (Radio) Transmission Channels", Analele Universitatii din Oradea, Fascicola Electrotehnica, Sectiunea Electronica, 2005, pp. 21-24.
      16. Horia Balta, Maria Kovaci " A study on turbo decoding iterative algorithms", Buletinul Stiintific al Universitatii „Politehnica” Timisoara, Seria Electronica si Telecomunicatii, Tom 49-63, Fascicola 2, 2004, pp. 33-37.
      17. Horia Balta, Maria Kovaci " The Performance of Convolutional Codes used in Turbo Codes", Buletinul Stiintific al Universitatii „Politehnica” Timisoara, Seria Electronica si Telecomunicatii, Tom 49-63, Fascicola 2, 2004, pp.38-43.
      18. Horia Balta, Maria Kovaci " A Comparasion Between Weight Spectrum of Different Convolutional Code Types", Analele Universitatii din Oradea, Fascicola Electrotehnica, Sectiunea Electronica, 2004, pp. 174-179.
      19. Maria Kovaci, Alexandru Isar " Denoising Signals Corrupted by Speckle Noise", Buletinul Stiintific al Universitatii „Politehnica” Timisoara, Seria Electronica si Telecomunicatii, Tom 47-61, Fascicola 1-2, 2002, pp.182-185.

        Conference Articles

        1. Andy Vesa, Maria Kovaci, Lucian Trifina, Horia Balta," Memory 4 Triple-Binary Turbo Codes of Rate 0.6", 20th International Conference on Methods and Models in Automation and Robotics (MMAR2015), 24-27 Aug, Miedzyzdroje, Poland 2015, pp. 817-822, ISBN:978-1-4799-8701-6
        2. Radu Lucaciu, Maria Kovaci, Janos Gal, Horia Balta," On the Binary Allocation of Modulator Symbol in the Case of Turbo Coded 32-QAM Rectangular Modulation", 20th International Conference on Methods and Models in Automation and Robotics (MMAR2015), 24-27 Aug, Miedzyzdroje, Poland 2015, pp. 175-179, ISBN:978-1-4799-8701-6
        3. Radu Lucaciu, Maria Kovaci, Janos Gal, Adrian Mihaescu, Horia Balta," On the Turbo Coded Bits Allocation Mode for the 64-QAM Square Modulation", 38th International Conference on Telecommunications and Signal Processing (TSP2015), 09-11 Jul, Prague, Czech Republic 2015, pp. 205-209, ISBN:978-1-4799-8497-8
        4. Daniela Ionescu, Maria Kovaci, " The Shape Factor Influence on the Control Process of Multiferroic Nanoparticle Configurations in GHz Range ", 3rd edition of ModTech International Conference(ModTech2015), 17-20 June, 2015. Mamaia, Romania, 6 pag.
        5. Daniela Ionescu, Maria Kovaci, " Field Control of Multiferroic Spherical Core-Shell Nanocomposites with Applications in Microwave Range ", 3rd edition of ModTech International Conference(ModTech2015), 17-20 June, 2015. Mamaia, Romania, 6 pag.
        6. Kovaci Maria, Balta Horia," Turbo codes performance on Rice flat fading environment", 11th International Symposium on Electronics and Telecommunications (ISETC2014), 14-15 Nov, Timisoara 2014, 4 pag., ISBN:978-1-4799-7266-1
        7. Ionescu Daniela, Kovaci Maria," Performances of the planar ferrite phase shifters based on microwave garnets ", IEEE 11th International Symposium on Electronics and Telecommunications (ISETC2014), 14-15 Nov, Timisoara 2014, 4 pag., ISBN:978-1-4799-7266-1
        8. Ionescu Daniela, Kovaci Maria," Waveguide digital phase shifters filled with TT1 to TT86 ferrites for UHF and SHF radio bands-Parameter optimization ", IEEE 11th International Symposium on Electronics and Telecommunications (ISETC2014), 14-15 Nov, Timisoara 2014, 4 pag., ISBN:978-1-4799-7266-1
        9. Ionescu Daniela, Kovaci Maria, " Controlled Properties of the Thin Films of Ni0.5Zn0.5Fe2O4- BaTiO3 Ferrite-Ferroelectric Nanocomposites-Simulational Study ", Proceedings of The 17th International Conference on Innovative Manufacturing Engineering International Conference, IManE 2013, May 23-24, Iasi, Romania, ISBN-13: 978-3-03785- 786-1; published in Applied Mechanics and Materials, Vol. 371 (2013), pp. 383-388, online available at www.scientific.net, (2013) Trans Tech Publications, Switzerland doi:10.4028/www.scientific.net/AMM.371.383, http://www.scientific.net/AMM.371.383, ISI Proceedings: WOS:000334556900075
        10. Ionescu Daniela, Kovaci Maria, " Simulation Determination of the Electromagnetic Parameters for the CdCr2S4 Multiferroic Relaxor in GHz Range ", Proceedings of The 17th International Conference on Innovative Manufacturing Engineering International Conference, IManE 2013, May 23-24, Iasi, Romania, ISBN-13: 978-3-03785-786-1; published in Applied Mechanics and Materials, Vol. 371 (2013), pp. 389-393, online available at www.scientific.net, (2013) Trans Tech Publications, Switzerland doi:10.4028/www.scientific.net/AMM.371.389, http://www.scientific.net/AMM.371.389, ISI Proceedings: WOS:000334556900076
        11. Kovaci Maria, Balta Horia," Performance of Trellis Termination Methods for RSC Component Encoders of Turbo Codes", IEEE 10th International Symposium on Electronics and Telecommunications (ISETC2012), 15-16 Nov, Timisoara 2012, 4 pag., ISBN:978-1-4673-1176-2, ISI Proceedings: WOS:000318702700025
        12. Ionescu Daniela, Kovaci Maria, " Derived Mixture Law for the Ferrite - Ferroelectric Nanocomposites with Controllable Properties", IEEE 10th International Symposium on Electronics and Telecommunications (ISETC2012), 15-16 Nov, Timisoara 2012, 4 pag., ISBN:978-1-4673-1176-2, ISI Proceedings: WOS:000318702700095
        13. Ionescu Daniela, Kovaci Maria, " Method for calculating the electrical parameters evolution in a ferroelectric liquid crystal phase ", Proceedings of the 16th International Conference "Modern Technologies, Quality and Innovation - New face of TMCR" (ModTech2012), 24-26 May, 2012. Sinaia, Romania, ModTech Publishing House, Iasi, ISSN 2069-6736, pp. 469-472
        14. Ionescu Daniela, Kovaci Maria, " Study of the speed for data transfer in the doped permalloy included in the grid racetrack memories ", Proceedings of the 16th International Conference "Modern Technologies, Quality and Innovation - New face of TMCR" (ModTech2012), 24-26 May, 2012, Sinaia, Romania, ModTech Publishing House, Iasi, ISSN 2069-6736, pp. 473-476
        15. Mountassir Jamal, Balta Horia, Kovaci Maria, Isar Alexandru " Study of multiple access schemes in 3GPP LTE OFDMA vs. SC-FDMA ", International Conference onApplied Electronics (AE 2011), Pilsen, Czech Republic, September, 7-8, 2011, pp. 1-4.
        16. Balta Horia, Kovaci Maria, Isar Alexandru, Nafornita Miranda, Balta Maria " ARP and QPP interleaves selection based on the convergence of iterative decoding process for the construction of 16-state Duo Binary Turbo Codes ", 34th International Conference on Telecommunications and Signal Processing (TSP 2011), Budapest, Hungary, August, 18-20, 2011, pp. 116-120.
        17. Ionescu Daniela, Kovaci Maria " About the negative permittivity of some metamaterial composites — Simulational study ", IEEE 17th International Symposium for Design and Technology in Electronic Packaging (SIITME2011), Timisoara, Romania, October, 20-23, 2011, pp. 197-200.
        18. Ionescu Daniela, Bogdan Ion, Kovaci Maria " Simulation determination of the negative permeability for the metamaterials based on Sr(ZnTi)Fe10O19 hexaferrite ", IEEE 17th International Symposium for Design and Technology in Electronic Packaging (SIITME2011), Timisoara, Romania, October, 20-23, 2011, pp. 201-206.
        19. Kovaci Maria, Balta Horia, Nafornita Miranda, Balta Maria " QPP interleavers selection based on convergence of iterative turbo-decoding process at small block size ", IEEE International Symposium on Signal, Circuits and Systems, ISSCS 2011, Iasi, Romania, June 30-July 1, 2011, pp. 399-402.
        20. Balta Horia, Isar Alexandru, Kovaci Maria, Nafornita Miranda, Balta Maria " Double-binary RSC convolutional codes selection based on convergence of iterative turbo-decoding process ", IEEE International Symposium on Signal, Circuits and Systems, ISSCS 2011, Iasi, Romania, June 30-July 1, 2011, pp. 395-398.
        21. Mountassir Jamal, Balta Horia, Oltean Marius, Kovaci Maria, Isar Alexandru " A Physical Layer Simulator for WiMAX in Rayleigh Fading Channel ", 6th International Symposium on Applied Computational Intelligence and Informatics, SACI 2011, Timisoara, Romania, May, 19-21, 2011, pp. 281-284.
        22. Horia Balta, Maria Kovaci, Miranda Nafornita, Maria Balta " Multi-Binary Turbo-Code Design based on Convergence of Iterative Turbo-Decoding Process ", the 5th European Conference on Circuits and Systems for Communications (ECCSC’10), Belgrade, Serbia, November, 23-25, 2010, pp. 240-243.
        23. Marius Oltean, Maria Kovaci, Jamal Mountassir, Alexandru Isar, Petru Lazar " A physical layer simulator for WiMAX ", 9th IEEE International Symposium of Electronics and Telecommunications, ISETC 2010, Timisoara, Romania, November, 11-12, 2010, pp. 133-136.
        24. Ioan Eugen Andor, Lucian Ardelean, Horia Balta, Maria Kovaci, Marius Oltean, Alexandru Isar " A Study of the Permutation Schemes Used in Mobile Wireless Communications ", 9th IEEE International Symposium of Electronics and Telecommunications, ISETC 2010, Timisoara, Romania, November, 11-12, 2010, pp. 169-172.
        25. Maria Kovaci, Horia Balta " Comparing the Performance of Duo-Binary Turbo Codes on Rice Flat Fading Channel ", 9th IEEE International Symposium of Electronics and Telecommunications, ISETC 2010, Timisoara, Romania, November, 11-12, 2010, pp. 217-220.
        26. Maria Balta, Miranda Nafornita, Maria Kovaci, Horia Balta " Designing Convolutional Codes used in Multi-Binary Turbo Codes ", The 8th International Conference on Communication, COMM 2010, Bucuresti, Romania, June, 10-12, 2010, pp. 195-198.
        27. Maria Kovaci, Horia Balta " Comparing the Performance of Duo-Binary Turbo Codes on Rayleigh Channel ", OPTIM 2010, 12th International Conference on Optimization af Electrical and Electronic Equipment, Brasov, Romania, May, 20-22, 2010, pp. 953-956.
        28. Corina Nafornita, Alexandru Isar, Maria Kovaci " Increasing Watermarking Robustness using Turbo Codes ", 6th IEEE International Symposium on Inteligent Signal Processing, WISP 2009, Budapest, Hungary, August, 26-28, 2009, pp. 113-118.
        29. Maria Kovaci, Horia Balta, Miranda Nafornita " On Using Turbo Codes Over Rice Flat Fading Channels ", IEEE International Symposium on Signal, Circuits and Systems, ISSCS 2009, Iasi, Romania, July, 09-10, 2009, pp. 461-464.
        30. Maria Kovaci, Horia Balta " On Using Turbo Coding over Rayleigh Flat Fading Channels ", The 4th International Conference on Engineering Technologies-ICET 2009, Novi Sad, April 28-30, 2009, pp. 149-153.
        31. Horia Balta, Maria Kovaci, Ciprian Botiz, Cristian Poenaru" Bit Decoding Versus Symbol Decoding in Multi-Binary Turbo Decoders ", The 4th International Conference on Engineering Technologies-ICET 2009, Novi Sad, April 28-30, 2009, pp. 145-147.
        32. Marius Oltean, Maria Kovaci, Horia Balta, Andrei Campeanu " Multi Binary Turbo-Coded Wavelet OFDM in Flat Fading Channels", Workshop on Signal Processing Systems for Wireless Communications (SPSWC’08), 2-3 July 2008, Cluj Napoca.
        33. Daniel Bosneagu, Horia Balta, Maria Kovaci, Marius Oltean " Permutations in Communications", Workshop on Signal Processing Systems for Wireless Communications (SPSWC’08), 2-3 July 2008, Cluj Napoca.
        34. Maria Kovaci, Horia Balta, Alexandre De Baynast, Miranda Nafornita " Performance Comparison of Punctured Turbo Codes and Multi Binary Turbo Codes ", IEEE International Symposium on Signal, Circuits and Systems, ISSCS 2007, Iasi, Romania, July, 12-13, 2007, pp. 485-488.
        35. Horia Balta, Maria Kovaci, Lucian Trifina " A Reduced Memory MAP Algorithm for Turbo Codes ", Proceedings of the 8th International Conference on Development and Application Systems, Suceava, 25-27 May, 2006, pp. 164-168.
        36. Horia Balta, Maria Kovaci " The Turbo-codes Performances in the (Radio) Rice Flat Fading Channels", The Military Technical Academy, The 31st, internationally attended scientific conference "Modern Technologies in the XXI Century", Bucharest 03-04 November, 2005, pp. 10.1-10.6.
        37. Horia Balta, Maria Kovaci, Alexandre De Baynast " Performance of Turbo-Codes on Nakagami Flat Fading (Radio) Transmission Channels",IEEE International Signals, Systems and Computers, Conference Record of the Thirty-Ninth Asilomar Conference Pacific Grove, California, on October 28 - November 1, 2005, pp. 606-610.
        38. Maria Kovaci, Horia Balta, Miranda Nafornita " The Performance of Interleavers used in Turbo Codes", IEEE International Symposium SCS, ISSCS’2005, Iasi, July, 14-15, 2005, pp. 363-366.
        39. Horia Balta, Maria Kovaci, Miranda Nafornita " A Study on Turbo Coding Systems with pi/4 Shifted DQPSK Modulation ", IEEE International Symposium SCS, ISSCS’2005, Iasi, July, 14-15, 2005, pp. 367-370.
        40. Maria Kovaci, Horia Balta " Non-Binary Turbo Codes Interleavers ", The 36-th International Scientific Symposium of the Military Equipment & Technologies Research Agency, Bucharest, May 26-27, 2005, pp. 208-213.
        41. Horia Balta, Maria Kovaci " A Study on Non-Binary Turbo Codes", The 36-th International Scientific Symposium of the Military Equipment & Technologies Research Agency, Bucharest, May 26-27, 2005, pp. 214-219.
        42. Horia Balta, Maria Kovaci " Turbo-Coduri: Constructie, performante, perspective", Academia fortelor terestre "Nicolae Balcescu" Sibiu a VIII-a Sesiune de Comunicari Stiintifice, 11 iunie, 2004, pp. 27-34.
        43. Horia Balta, Maria Kovaci " Studiu asupra preciziei curbelor BER construite prin simularea functionarii turbo-codurilor", Academia fortelor terestre "Nicolae Balcescu" Sibiu a VIII-a Sesiune de Comunicari Stiintifice, 11 iunie, 2004, pp. 35-42.
        44. Maria Kovaci, Dorina Isar, Alexandru Isar " Denoising SAR Images", IEEE International Symposium SCS’2003, Iasi, July, 10-11, 2003, pp. 281-284.

        Interests

        • Signal Processing
        • Interleavers design
        • Iterative decoding
        • Flat fading wireless channels (Rice, Rayleigh, Nakagami)
        • Turbo-codes

        Hobbies

        • Music, Lecture, Sports


        Departamentul de Comunicatii
        Bd. Vasile Parvan, nr. 2, 300223 Timisoara, Romania
        Telefon: (0040) 256-40-3301