Research
I work on a wide range of problems in information theory and data communications. My research is inspired by the challenges of wireless networks beyond 5G (B5G) and modern data storage technologies. Below is a list of my active projects.
Wireless Networking:
- Communications beyond 5G, antenna-algorithm co-design, NOMA, UAV-assisted networks, security
Network Information Theory:
- Communications with imperfect feedback, capacity of heterogeneous networks, side-information vs. CSI allocation, ultra low-rate feedback regime
Memory Systems and Data Storage:
- New channel models for DNA storage, capacity results, computationally-efficient codes for emerging data storage technologies
Other Domains and Interdisciplinary Work:
- Optimization and aggregate rank recovery, cyber-security and DNS traffic obfuscation, model sensitivity in environmental engineering
Journal Publications
[J20] A. Ravi, A. Vahid, I. Shomorony, “ Coded Shotgun Sequencing,” IEEE Journal on Selected Areas in Information Theory, 2022.
[J19] A. Vahid, “ Topological Content Delivery with Feedback and Random Receiver Cache,” IEEE Journal on Selected Areas in Information Theory, 2021.
[J18] A. Vahid, S. C. Lin, I. H. Wang, Y. C. Lai, “ Content Delivery over Broadcast Erasure Channels with Distributed Random Cache,” IEEE Journal on Selected Areas in Information Theory, 2021.
[J17] I. Shomorony, A. Vahid, “ Torn-Paper Coding,” IEEE Transactions on Information Theory, 2021.
[J16] M. Johnny, A. Vahid, “ Low-Complexity Blind Interference Suppression with Reconfigurable Antennas,” IEEE Transactions on Wireless Communications, 2021.
[J15] S. C. Lin, I. H. Wang, A. Vahid, “ Capacity of Broadcast Packet Erasure Channels with Single-User Delayed CSI,” IEEE Transactions on Information Theory, 2021.
[J14] A. Vahid, S. C. Lin, I. H. Wang, “ Erasure Broadcast Channels with Intermittent Feedback,” IEEE Transactions on Communications, 2021.
[J13] S. Nassirpour, A. Vahid, “ On the Stability Regions of Intermittent Interference Networks,” IEEE Transactions on Communications, 2021.
[J12] T. Levy, A. Vahid, R. Giryes, “Ranking Recovery from Limited Comparisons using Low-Rank Matrix Completion,” journal of Applied and Computational Harmonic Analysis, 2020.
[J11] S. Nassirpour, A. Vahid, “Embedded Codes for Reassembling Non-Overlapping Random DNA Fragments,” IEEE Transactions on Molecular, Biological, and Multi-Scale Communications, 2020.
[J10] M. Johnny, A. Vahid, “Exploiting Coherence Time Variations for Opportunistic Blind Interference Alignment,” IEEE Transactions on Communication Theory, 2020.
[J9] A. Vahid, “On the Degrees-of-Freedom of Two-Unicast Wireless Networks with Delayed CSIT,” IEEE Transactions on Information Theory, 2019.
[J8] A. Vahid and R. Calderbank, “Throughput Region of Spatially Correlated Interference Packet Networks,” IEEE Transactions on Information Theory, 2019.
[J7] G. Mappouras, A. Vahid, R. Calderbank, D. Sorin, “Extending Flash Lifetime in Embedded Processors by Expanding Analog Choice,” IEEE Transactions on Computer-Aided Design Integrated Circuits and Systems, 2018.
[J6] A. Vahid, V. Aggarwal, S. Avestimehr, A. Sabharwal, “Interference Management with Mismatched Partial Channel State Information,” EURASIP Journal on Wireless Communications and Networking, 2017.
[J5] 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.
[J4] 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.
[J3] 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.
[J2] 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.
[J1] 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
[C27] A. Vahid, “Harnessing Random Receiver Cache in Erasure Interference Channels with Feedback,” IEEE Global Communications Conference (GLOBECOM), 2021.
[C26] A. Vahid, “Distortion-Based Outer-Bounds for Channels with Rate-Limited Feedback,” International Symposium on Information Theory (ISIT), 2021.
[C25] A. Narayan Ravi, A. Vahid, I. Shomorony, “Capacity of the Torn Paper Channel with Lost Pieces,” International Symposium on Information Theory (ISIT), 2021.
[C24] M. A. Farahani, A. Vahid, A. E. Goodwell, “Evaluating Ecohydrological Model Sensitivity to Forcing Variability with an Information Theory-Based Approach,” American Geophysical Union (AGU) Fall Meeting, 2020. Interdisciplinary work in environmental engineering.
[C23] I. Shomorony, A. Vahid, “Communicating over the Torn-Paper Channel,” IEEE Global Communications Conference (GLOBECOM), 2020.
[C22] S. C. Lin, I. H. Wang, A. Vahid, “Capacity of Erasure Broadcast Channels with Single-User Delayed CSI and Common Messages,” IEEE Global Communications Conference (GLOBECOM), 2020.
[C21] M. Johnny, A. Vahid, “Embedding Information in Radiation Pattern Fluctuations,” Proceedings of International Symposium on Information Theory (ISIT), 2020.
[C20] S. Nassirpour, A. Vahid, “Throughput, Delay, and Complexity Tradeoffs in Interference Channels,” 10th IEEE Annual Computing and Communication Workshop and Conference (CCWC), 2020. Winner Best Paper Award.
[C19] A. Vahid, I. H. Wang, S. C. Lin, “Capacity results for erasure broadcast channels with intermittent feedback,” IEEE Information Theory Workshop (ITW), 2019.
[C18] Mappouras, A. Vahid, R. Calderbank, D. Sorin, “GreenFlag: Protecting 3D-Racetrack Memory from Shift Errors,” 49th Annual IEEE/IFIP International Conference on Dependable Systems and Networks (DSN). Runner-up Best Paper Award.
[C17] S. C. Lin, I. H. Wang, A. Vahid, “No Feedback, No Problem: Capacity of Erasure Broadcast Channels with Single-User Delayed CSI,” International Symposium on Information Theory (ISIT), 2019.
[C16] A. Vahid, “Finite Field X-Channels with Delayed CSIT and Common Messages,” International Symposium on Information Theory (ISIT), 2018.
[C15] A. Vahid, R. Calderbank, “ARQ for Interference Packet Networks,” International Symposium on Information Theory (ISIT), 2018.
[C14] 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.
[C13] A. Vahid, R. Calderbank, “When does spatial correlation add value to delayed channel state information?,” proceedings of International Symposium on Information Theory (ISIT), 2016.
[C12] 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).
[C11] 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.
[C10] A. Vahid, I. Shomorony, R. Calderbank, “Informational Bottlenecks in Two-Unicast Wireless Networks with Delayed CSIT,” proceedings Allerton Conference, 2015.
[C9] 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.
[C8] 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.
[C7] A. Vahid, M. Ali Maddah-Ali, S. Avestimehr, “Binary Fading Interference Channel with No CSIT,” proceedings IEEE International Symposium on Information Theory, 2014.
[C6] A. Vahid, M. Ali Maddah-Ali, S. Avestimehr, “Communication Through Collisions: Opportunistic Utilization of Past Receptions,” proceedings IEEE Infocom, 2014.
[C5] A. Vahid, M. Ali Maddah-Ali, S. Avestimehr, “Approximate Capacity of the Two-User MISO Broadcast Channel with Delayed CSIT,” proceedings Allerton Conference, 2013.
[C4] A. Vahid, M. Ali Maddah-Ali, S. Avestimehr, “Binary Fading Interference Channel with Delayed Feedback,” proceedings IEEE International Symposium on Information Theory, 2012.
[C3] A. Vahid, M. Ali Maddah-Ali, S. Avestimehr, “Interference Channel with Binary Fading: Effect of Delayed Network State Information,” proceedings Allerton Conference, 2011.
[C2] A. Vahid, V. Aggarwal, S. Avestimehr, A. Sabharwal, “On the Capacity of Multi-hop Wireless Networks with Partial Network Knowledge,” proceedings Allerton Conference, 2010.
[C1] 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.”