About

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I received my M.Sc. and Ph.D. from the School of Electrical and Computer Engineering at Cornell University working with Professor Salman Avestimehr. From September 2014 to July 2017, I worked as a postdoctoral research scientist with Professor Robert Calderbank. My research interests include network information theory, wireless communications, coding theory, and data storage.

Curriculum Vitae

Research

I work on projects in information theory, the theory of communications, and in data storage. Below is a list of my active projects.

Wireless Communications:

  • Information flow with limited feedback bandwidth
  • Information flow with delayed channel knowledge
  • Informational bottlenecks in multi-hop wireless networks

Memory Systems and Data Storage:

  • Tolerating shift errors in racetrack memory
  • Coding for lifetime
  • Coding for reliability and performance optimization
  • DNA archival storage

Journal Publications and Preprints

T. Levy, A. Vahid, R. Giryes, “Ranking Recovery from Limited Comparisons using Low-Rank Matrix Completion,” under review.

A. Vahid, “On the Degrees-of-Freedom of Two-Unicast Wireless Networks with Delayed CSIT,” to appear in IEEE Transactions on Information Theory.

A. Vahid, “Capacity Results for Finite-Field X-Channels with Delayed CSIT,” submitted to IEEE Transactions on Information Theory.

A. Vahid and R. Calderbank, “Throughput Region of Spatially Correlated Interference Packet Networks,” submitted to IEEE Transactions on Information Theory.

A. Vahid, V. Aggarwal, S. Avestimehr, A. Sabharwal, “Interference Management with Mismatched Partial Channel State Information,” EURASIP Journal on Wireless Communications and Networking, 2017.

A. Vahid, M. A. Maddah-Ali, S. Avestimehr “Binary Fading Interference Channel with No CSIT,” IEEE Transactions on Information Theory, vol. 63, no. 6, pp. 3565-3578, 2017.

A. Vahid and R. Calderbank, “Two-User Fading Interference Channel with Local Delayed CSIT,” IEEE Transactions on Information Theory, vol. 62, no. 9, pp. 4910-4923, 2016.

A. Vahid, M. A. Maddah-Ali, S. Avestimehr “Approximate Capacity Region of the MISO Broadcast Channels with Delayed CSIT,” IEEE Transactions on Communications, vol. 64, no. 7, pp. 2913-2924, 2016.

A. Vahid, M. A. Maddah-Ali, S. Avestimehr “Capacity Results for Binary Fading Interference Channels With Delayed CSIT,” IEEE Transactions on Information Theory, vol. 60, no. 10, pp. 6093-6130, 2014.

A. Vahid, C. Suh, S. Avestimehr “Interference Channels with Rate-Limited Feedback,” IEEE Transactions on Information Theory, vol. 58, no. 5, pp. 2788-2812, 2012.



Conference Publications

A. Vahid, “Finite Field X-Channels with Delayed CSIT and Common Messages,” accepted to International Symposium on Information Theory (ISIT), 2018.

A. Vahid, R. Calderbank, “ARQ for Interference Packet Networks,” accepted to International Symposium on Information Theory (ISIT), 2018.

G. Mappouras, A. Vahid, R. Calderbank, D. Sorin, “Jenga: Efficient Fault Tolerance for Stacked DRAM,” proceedings of IEEE International Conference on Computer Design (ICCD), 2017.

A. Vahid, R. Calderbank, “When does spatial correlation add value to delayed channel state information?,” proceedings of International Symposium on Information Theory (ISIT), 2016.

G. Mappouras, A. Vahid, R. Calderbank, D. Sorin, “Methuselah Flash: Rewriting Codes for Extra-Long Storage Lifetime,” proceedings of the 46th Annual IEEE/IFIP International Conference on Dependable Systems and Networks (DSN 2016).

A. Eslami, A. Velasco, A. Vahid, G. Mappouras, R. Calderbank, D. Sorin, “Writing without Disturb on Phase Change Memories by Integrating Coding and Layout Design,” proceedings Memory Systems, 2015.

A. Vahid, I. Shomorony, R. Calderbank, “Informational Bottlenecks in Two-Unicast Wireless Networks with Delayed CSIT,” proceedings Allerton Conference, 2015.

A. Vahid and R. Calderbank, “Impact of local delayed CSIT on the capacity region of the two-user interference channel,” proceedings IEEE International Symposium on Information Theory, 2015.

A. Vahid, G. Mappouras, A. Velasco, R. Calderbank, D. Sorin, “Virtual Cells and Concatenated Codes for Flash Memory,” Fifth Non-Volatile Memories Workshop (NVMW), 2015.

A. Vahid, M. Ali Maddah-Ali, S. Avestimehr, “Binary Fading Interference Channel with No CSIT,” proceedings IEEE International Symposium on Information Theory, 2014.

A. Vahid, M. Ali Maddah-Ali, S. Avestimehr, “Communication Through Collisions: Opportunistic Utilization of Past Receptions,” proceedings IEEE Infocom, 2014.

A. Vahid, M. Ali Maddah-Ali, S. Avestimehr, “Approximate Capacity of the Two-User MISO Broadcast Channel with Delayed CSIT,” proceedings Allerton Conference, 2013.

A. Vahid, M. Ali Maddah-Ali, S. Avestimehr, “Binary Fading Interference Channel with Delayed Feedback,” proceedings IEEE International Symposium on Information Theory, 2012.

A. Vahid, M. Ali Maddah-Ali, S. Avestimehr, “Interference Channel with Binary Fading: Effect of Delayed Network State Information,” proceedings Allerton Conference, 2011.

A. Vahid, V. Aggarwal, S. Avestimehr, A. Sabharwal, “On the Capacity of Multi-hop Wireless Networks with Partial Network Knowledge,” proceedings Allerton Conference, 2010.

A. Vahid and S. Avestimehr, “The Two-User Deterministic Interference Channel with Rate-Limited Feedback,” proceedings IEEE International Symposium on Information Theory, 2010.



PhD Thesis

A. Vahid, “The Impact of Imperfect Feedback on the Capacity of Wireless Networks.”

Awards


  • New Faculty Research Award, CU Denver, 2019.
  • Creative Research Collaborative (CRC) Fellowship, CU Denver, 2018.
  • Young Upwardly Mobile Professor (YUMP) Award, CU Denver, 2018.
  • Outstanding PhD Thesis Research Award, Cornell University, 2015.
  • Qualcomm Innovation Award Winner (Innovation Title: Collaborative Interference Management), 2013.
  • Director's PhD Teaching Assistant Award, Cornell University, 2011.
  • Jacobs Scholar Fellowship, School of ECE, Cornell University, 2009.
  • Ranked 2nd among over 360,000 participants in Iranian National University Entrance Exam, 2004.
  • Silver medal, Iranian National Physics Olympiad, 2003.

Recent News


  • August 2019: I will give a talk on “Capacity Results for Erasure Broadcast Channels with Intermittent Feedback,” at ITW, Visby, Sweden.
  • May 2019: I will give a talk on “Improving High Performance Memory through Information Theory,” at the CS Department.
  • April 2019: Our paper “GreenFlag: Protecting 3D-Racetrack Memory from Shift Errors,” has been nominated as a best paper award candidate at DSN 2019!
  • April 2019: Our paper “No Feedback, No Problem: Capacity of Erasure Broadcast Channels with Single-User Delayed CSI,” has been accepted for presentation at ISIT 2019.
  • March 2019: I received the 2019 New Faculty Research Award.
  • March 2019: Our paper “On the Degrees-of-Freedom of Two-Unicast Wireless Networks with Delayed CSIT,” has been accepted for publication in IEEE Transactions on Information Theory.

Students

I welcome applications from prospective Ph.D. students. If you are interested in working with me, please send me an email describing your research interests and background. Please include your detailed CV, your transcript(s), and GRE/TOEFL scores. I particularly encourage students of color, women, and students from other underrepresented groups to apply.

I am also interested in working with graduate and undergraduate students for short-term projects.

Contact


Email:
alireza.vahid@ucdenver.edu
The best way to reach me is via email. Please use your official email address.

Office:
2423 North Classroom Building – University of Colorado Denver

Teaching

Engineering Probability and Statistics, ELEC 3817, Spring'19, CU Denver
Digital Communications, ELEC 5248, Spring'19, CU Denver
Random Processes for Engineers, ELEC 5617, Fall'18, CU Denver
Digital Communications, ELEC 5248, Spring'18, CU Denver
Information Theory, ELEC 5250, Fall'17, CU Denver
Data+ Project, Duke University
  • Big Data Analytics mentor. Watch the video for our work here.
  • Visit the Data+ website here.
Random Signals in Communication and Signal Processing, Cornell University
  • Winner of the Director's PhD Best Teaching Award

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