AYFER ÖZGÜR
Assistant Professor, EE
Packard Electrical Engineering
350 Serra Mall, Room 261
Stanford, California 94305-9510
E-mail:  aozgur@stanford.edu
Phone: +1 650 723 7368

BIOGRAPHY

I am an assistant professor in the Electrical Engineering Department of Stanford University and a member of ISL. Before joining Stanford, I was a postdoctoral researcher with the Algorithmic Research on Networked Information Group at EPFL, Switzerland. I received my PhD degree in 2009 from the Information Processing Group at the same university. I received my B.Sc. degrees in electrical engineering and physics from Middle East Technical University, Turkey, in 2001 and the M.Sc. degree in electrical engineering from the same university in 2004. From 2001 to 2004, I worked as a hardware design engineer for the Defense Industries Research and Development Institute in Turkey.

My Thesis
Google Scholar

RESEARCH

My research interests are in information and coding theory, wireless communication and networks. I am interested in understanding the fundamental limits of communication in wireless networks and deriving principles for wireless network design. In particular, I am interested in capacity scaling laws and cooperation in large networks and approximate capacity characterizations for relay networks. I am also interested in the challenges involved in translating such fundamental principles to practice. In particular, I am interested in network complexity reduction via wireless network simplification and low-complexity code design for wireless relaying.


TEACHING

STUDENTS

AWARDS

PUBLICATIONS

Monograph:
  • A. Ozgur, O. Leveque, D. Tse, Operating Regimes of Wireless Networks, Foundations and Trends in Networking: Vol. 5: No 1, pp 1-107. [FullText]

Journal Publications:
  1. C. Nazaroglu, A. Ozgur, C. Fragouli, Wireless Network Simplification: The Gaussian N-Relay Diamond Network, IEEE Transactions on Information Theory, 60(10):6329-6341, 2014.
  2. A. Ozgur, S. Diggavi, Approximately Achieving Gaussian Relay Network Capacity With Lattice-Based QMF Codes, IEEE Transactions on Information Theory, 59(12):8275 - 8294, 2013. [Full Text]
  3. A. Ozgur, O. Leveque and D. Tse, Spatial Degrees of Freedom of Large Distributed MIMO Systems and Wireless Ad hoc Networks, IEEE Journal on Selected Areas in Communications, 31(2):202-214, February 2013. [Full Text]
  4. A. Ozgur and O. Leveque, Throughput-Delay Tradeoff for Hierarchical Cooperation in Ad Hoc Wireless Networks, IEEE Transactions on Information Theory, 56(3):1369-1377, 2010. [Full Text]
  5. A. Ozgur, R. Johari, D. Tse, and O. Leveque, Information Theoretic Operating Regimes of Large Wireless Networks. IEEE Transactions on Information Theory, 56(1):427-437, 2010. [Full Text]
  6. A. Ozgur, O. Leveque, and D. Tse, Hierarchical Cooperation Achieves Optimal Capacity Scaling in Ad Hoc Networks. IEEE Transactions on Information Theory, 53(10):3549-3572, 2007. [Full Text]
  7. A. Ozgur, O. Leveque, and E. Preissmann, Scaling Laws for One and Two-Dimensional Random Wireless Networks in the Low Attenuation Regime. IEEE Transactions on Information Theory, 53(10):3573-3586, 2007. [Full Text]

Pre-prints:
  1. J. Chen, A. Ozgur, and S. Diggavi, Feedback through Overhearing [ arxiv:1407.7590]
  2. C. T. Li, and A. Ozgur, Channel Diversity needed for Vector Interference Alignment [ arxiv:1402.5326]
  3. B. Chern, F. Farnia, and A. Ozgur, On feedback in Gaussian multi-hop networks, submitted to IEEE Transactions on Information Theory, July 2014.[arxiv:1304.7344]
  4. R. Kolte, A. Ozgur, and A. El Gamal, Capacity Approximations for Gaussian Relay Networks, submitted to IEEE Transactions on Information Theory, July 2014.[arxiv:1407.3841]
  5. R. Kolte, A. Ozgur, and S. Diggavi, When are dynamic relaying strategies necessary in half-duplex wireless networks?, submitted to IEEE Transactions on Information Theory, May 2014.[arxiv:1405.1782]
  6. Y. Dong, F. Farnia, and A. Ozgur, Near Optimal Energy Control and Approximate Capacity of Energy Harvesting Communication, submitted to JSAC Special Issue on Wireless Communications Powered by Energy Harvesting and Wireless Energy Transfer, March 2014.[arxiv:1405.1156]
  7. B. Chern and A. Ozgur, Achieving the Capacity of the N-Relay Gaussian Diamond Network Within log N Bits, submitted to IEEE Transactions on Information Theory, August 2013.[arxiv:1207.5660]

Conference Publications:
  1. R. Kolte and A. Ozgur, Fast near-optimal subnetwork selection in layered relay networks, to be presented at the Allerton Conference on Communication, Control and Computing, October 2014.
  2. J. Chen, A. Ozgur, and S. Diggavi, Feedback through Overhearing, to be presented at the Allerton Conference on Communication, Control and Computing, October 2014.
  3. J. Chen, S. Yang, A. Ozgur, and A. Goldsmith, Outdated CSIT can achieve full DoF in heterogeneous parallel channels, in Proc. IEEE Int. Symposium on Information Theory, July 2014.
  4. Y. Dong, A. Ozgur, Approximate capacity of energy harvesting communication with finite battery, in Proc. IEEE Int. Symposium on Information Theory, July 2014.
  5. C. T. Li, A. Ozgur, Channel Diversity needed for Vector Interference Alignment, in Proc. IEEE Int. Symposium on Information Theory, July 2014.
  6. R. Kolte, A. Ozgur, H. Permuter, The capacity region of a class of deterministic state-dependent z-interference channels, in Proc. IEEE Int. Symposium on Information Theory, July 2014.
  7. R. Kolte, A. Ozgur, H. Permuter, Deterministic Z-interference channels with unidirectional partial cribbing, in Proc. 48th Annual Conference on Information Sciences and Systems (CISS), March 2014.
  8. R. Kolte, A. Ozgur, A. El Gamal, Optimized Noisy Network Coding for Gaussian Relay Networks, in Proc. International Zurich Seminar on Communications, February 2014.
  9. F. Farnia, A. Ozgur, On feedback in Gaussian multi-hop networks, in Proc. IEEE Information Theory and Applications Workshop, San Diego, February 2014.
  10. S. Brahma, C. Fragouli, A. Ozgur, On the Structure of Approximately Optimal Schedules for Half-Duplex Diamond Networks, in Proc. of Allerton Conference on Communication, Control and Computing, October 2013.
  11. R. Kolte, A. Ozgur, Improved Capacity Approximations for Gaussian Relay Networks, in Proc. IEEE Information Theory Workshop, Seville, Spain, 2013.
  12. B. Chern, A. Ozgur, On Information Flow and Feedback in Relay Networks, in Proc. IEEE Information Theory Workshop, Seville, Spain, 2013.
  13. A. Merzakreeva, A. Ozgur, O. Leveque, Telescopic beamforming for large wireless networks, in Proc. IEEE Int. Symposium on Information Theory, Istanbul, July 2013. [Full Text]
  14. R. Kolte, A. Ozgur, Generalized Diversity-Multiplexing Tradeoff of Half-Duplex Relay Networks, in Proc. IEEE Int. Symposium on Information Theory, Istanbul, July 2013. [Full Text]
  15. A. Ozgur, A Scaling Law Approach to Wireless Relay Networks, in Proc. IEEE Information Theory and Applications Workshop, San Diego, February 2013. [Full Text]
  16. B. Chern, A. Ozgur, Achieving the Capacity of the N-Relay Gaussian Diamond Network Within log N Bits, in Proc. IEEE Information Theory Workshop (ITW), Lausanne, September 2012. [Full Text]
  17. A. Ozgur, S. Diggavi, Dynamic QMF for Half-Duplex Relay Networks, in Proc. IEEE Int. Symposium on Information Theory, Boston, July 2012. [Full Text]
  18. S. Brahma, A. Ozgur, C. Fragouli, Simple schedules for half-duplex networks, in Proc. IEEE Int. Symposium on Information Theory, Boston, July 2012. [Full Text]
  19. A. Merzakreeva, A. Ozgur, O. Leveque, Hierarchical Beamforming for Large One-Dimensional Wireless Networks, in Proc. IEEE Int. Symposium on Information Theory, Boston, July 2011. [Full Text]
  20. A. Sengupta, S. Brahma, A. Ozgur, C. Fragouli, S. Diggavi, Graph-based codes for quantize-map-and-forward relaying, in Proc. IEEE International Information Theory Workshop (ITW 2011), Paraty, Brazil, October 16-20, 2011. [Full Text]
  21. C. Nazaroglu, A. Ozgur, C. Fragouli, Wireless Network Simplification: the Gaussian N-Relay Diamond Network, in Proc. IEEE Int. Symposium on Information Theory, St.Petersburg, July 2011. [Full Text]
  22. C. Nazaroglu, A. Ozgur, J. Ebrahimi, C. Fragouli, Network simplification: the Gaussian diamond network with multiple antennas, in Proc. IEEE Int. Symposium on Information Theory, St.Petersburg, July 2011. [Full Text]
  23. A. Ozgur, O. Leveque and D. Tse, Beyond Multi-hop: Optimal Cooperation in Large Wireless Networks, invited paper in Proc. Int. Conference on Computer Communications and Networks (ICCCN 2010), Zurich, August 2010. [Full Text]
  24. A. Ozgur, S. Diggavi, Approximately Achieving Gaussian Relay Network Capacity with Lattice Codes, Proc. IEEE Int. Symposium on Information Theory, Austin, June 2010. [Full Text]
  25. A. Ozgur, O. Leveque and D. Tse, Linear Capacity Scaling in Wireless Networks: Beyond Physical Limits?, Proc. IEEE Information Theory and Applications Workshop, San Diego, Feb 2010. [Full Text]
  26. A. Ozgur, D. Tse, Achieving Linear Scaling with Interference Alignment, Proc. IEEE Int. Symposium on Information Theory, Seoul, July 2009. [Full Text]
  27. A. Ozgur, R. Johari, D. Tse, O. Leveque, Information Theoretic Operating Regimes of Large Wireless Networks, Proc. IEEE Int. Symposium on Information Theory, Toronto, July 2008.
  28. A. Ozgur, O. Leveque, Throughput-Delay Tradeoff for Hierarchical Cooperation in Ad Hoc Wireless Networks, Proc. Int. Conference on Telecommunications, St Petersburg, June 2008.
  29. A. Ozgur, O. Leveque and D. Tse, Exact Capacity Scaling of Extended Wireless Networks, Proc. IEEE Int. Symposium on Information Theory, Nice, July 2007.
  30. A. Ozgur, O. Leveque and D. Tse, Hierarchical Cooperation Achieves Linear Capacity Scaling in Ad Hoc Networks, Proc. IEEE Infocom Conference, May 2007.
  31. A. Ozgur, O. Leveque and D. Tse, How does the Information Capacity of Ad Hoc Networks Scale?, invited paper in Proc. Allerton Conference on Communication, Control and Computing, October 2006.
  32. A. Ozgur and O. Leveque, Scaling Laws for Two-Dimensional Random Ad-Hoc Wireless Networks, Proc. IEEE Int. Zurich Seminar on Communications, Zurich 2006.