ÖZGÜR YILMAZ

Department of Mathematics
University of Maryland

College Park, MD 20742

EDUCATION

    Princeton University , Princeton, N.J . Ph.D. in Applied and Computational Mathematics , 1997-2001
    Bogazici University , Istanbul, Turkey. B.S. in Mathematics , 1993-1997
    Bogazici University , Istanbul, Turkey. B.S. in Electrical Engineering , 1992-1997


HONORS AND AWARDS
   
        First Year Merit Fellowship in Natural Sciences and Mathematics, Princeton University (1997).
        Graduate fellowship of Deutsche Akademische Austausch Dienst (DAAD) (1996).
        Graduated with the 1st rank among math majors, 3rd rank among EE majors, and 1st rank among all double major students at Bogazici University
        Undergraduate scholarship of the Turkish Scientific and Technical Research Council (TUBITAK) (1991-1996)
        Undergraduate scholarship of the IELEV Foundation (1992-1997).


RESEARCH INTERESTS

        Applied harmonic analysis, signal processing, information theory


POSITIONS and WORK EXPERIENCE

        University of Maryland, College Park, Department of Mathematics, Avron Douglis Lecturer, 2002-2004
        Princeton University, Program in Applied and Computational Mathematics , Research Associate , 2001-2002.
        AT&T Labs-Research , Shannon Laboratory, Florham Park, N.J. (Summer 2000).
        Siemens Corp. Research , IASP, Princeton, N.J. (Summer 1999).
        Northern Telecom NETAS, Hardware Department, Istanbul, Turkey (Summer1995).


TEACHING EXPERIENCE

        2002-2004: Lecturer at the University of Maryland, College Park for the courses:

            STAT 400 Applied Probability and Statistics (Fall 2002, Spring 2003, and Spring 2004),
            MATH 406 Introduction to Number Theory (Spring 2003, and Spring 2004),
  
        Spring 2001: Teaching Assistant at Princeton University for the course APC 199 (Math Alive).

        2000-2001: Teaching Assistant for the undergraduate certificate program in PACM, Princeton University

        1996-1997: Teaching Assistant at Bogazici University for the courses:

            EE 201 Fundamentals of Electrical Engineering, 
            EE 372 Signals and Systems.


SELECTED TALKS
       

• Seminar and colloquium talks at Princeton University, University of Maryland, University of South Carolina,  Koç
  University, Istanbul, Siemens Corporate Research.       
• International Conference on Sampling Theory and Applications (SampTa), Strobl, Austria, May 2003.
• Joint IDR-IMA Workshop, Minneapolis, MN, April 2001.
• AMS Annual Meeting 2001, New Orleans, LA.
• International Conference on Acoustics, Speech, and Signal Processing (ICASSP), Istanbul, Turkey, June 2000.
  

THESIS       

        Mathematical Properties of Coarse Quantization Schemes in Signal Analysis with New Applications [ ps ] [ pdf ], Princeton University, 2001.
        Advisor: Ingrid Daubechies.



PUBLICATIONS

Journal Papers:

1. Finite frame sigma-delta quantization, (with John J. Benedetto and Alex Powell), in preparation.
2. Averaging property of first-order sigma-delta quantizers, in preparation.
3. Beta encoders for analog-to-digital conversion that are more robust, (with Ingrid Daubechies), to be submitted to IEEE Transactions on Information Theory.
4. On coarse quantization of tight Gabor frame expansions, submitted to International Journal of Wavelets, Multiresolution and Information Processing, Special Issue on ``Sampling Problems Related to Wavelet Theory and Time-Frequency Analysis''.
5. Blind separation of speech signals via time-frequency masking, (with Scott Rickard), accepted for publication in IEEE Transactions on Signal Processing.
6. Coarse quantization of highly redundant time-frequency representations of certain classes of square-integrable functions, Applied and Computational Harmonic Analysis, 14:107--132, 2003.
7. Stability analysis for several sigma-delta methods of coarse quantization of bandlimited functions, Constructive Approximation, 18:599--623, 2002.

Conference Proceedings:

1. Sigma-delta quantization and finite frames, (with John J. Benedetto and Alex Powell), Invited Paper for the International Conference on Acoustics, Speech, and Signal Processing 2004, submitted.
2. On the W-disjoint orthogonality of speech, (with Scott Rickard),  Proceedings of the International Conference on Acoustics, Speech, and Signal Processing 2002, (ICASSP'02), Volume 1, pp. 529--532.
3. Blind Separation of Disjoint Orthogonal Signals: Demixing n Sources From Two Mixtures (with Alex Jourjine and Scott Rickard), Proceedings of the International Conference on Acoustics, Speech, and Signal Processing 2000, (ICASSP'00), Volume 5, pp. 2985--2988. 

OTHER

US Patent 6430528. Method and apparatus for demixing of degenerate mixtures} (with A. Jourjine and S. Rickard).