AVIK SENGUPTA

Ph.D., Electrical Engineering

Virginia Tech, Blacksburg, VA.

Wireless@VT and The Hume Center for National Security & Technology

I have a Ph.D. in Electrical Engineering from Virginia Tech with a focus on wireless communication systems. I worked with Wireless@VT and The Hume Center for National Security & Technology, and was co-advised by Dr. T. Charles Clancy and Dr. Ravi Tandon. My Ph.D. dissertation is based on caching and efficient content distribution in next generation 5G wireless networks. When I'm not distributing content in wireless networks, I'm either playing the guitar, tinkering with my camera and/or consuming all things food!

My research interests lie in PHY/MAC layer design of Wireless Communication Systems. I have a strong background in mathematical modeling and analysis of wireless communication systems with a focus on information theory, reinforcement learning with applications in communication systems and cross-layer optimization.

Research Interests

  • Efficient caching and content distribution in 5G wireless systems by characterizing the fundamental limits of caching networks. Application of reinforcement learning techniques to optimally cache and distribute content in such networks.
  • Interference mitigation and capacity maximization for LTE Cellular and D2D networks.
  • Dynamic spectrum access, spectrum sharing and cognition in LTE cellular networks.
  • Study of security and latency related limits in IoT based wireless sensor networks.

Education

Virginia Tech

Fall 2012 - Fall 2016

Ph.D. in EE
GPA: 3.94 / 4

Kansas State University

Fall 2010 - Spring 2012

Master of Science in ECE
Master's Thesis
GPA: 3.89 / 4

West Bengal University of Technology

Fall 2006 - Spring 2010

Bachelor of Technology in ECE
GPA: 8.87 / 10

Work Experience

Interim Engineering Intern - LTE Modem Systems

Qualcomm CDMA Technologies Inc., San Diego, CA | May 2016 - August 2016

QCT LTE Modem Systems Receiver Design: Worked on LTE-A receiver demod algorithm design for TM3 (open loop spatial multiplexing) for 4x4 MIMO with a focus on performance vs. complexity trade-offs. Duties also include running system-level simulations on C-SIM, a bit-exact LTE-A simulator (using Python wrapper).

Graduate Research Assistant

Virginia Tech, Blacksburg, VA | August 2012 - Present

PhD candidate and GRA affiliated to Wireless@VT and Hume Center for National Security and Technology at Virginia Tech. Primary research focus is on fundamental limits of caching and content distribution in 5G wireless networks, latency trade-offs under secrecy constraints in delay limited IoT networks.

Research Intern - Wireless Access Lab

FutureWei Technologies (Huawei Research), Bridgewater, NJ | May 2014 - August 2014

LTE Radio Resource Management Design and System Level Simulations. Worked on downlink power control in multi-eNodeB LTE-A network and interference mitigation.

LTE Simulation Engineer Intern

BlackBerry, Irving, TX | May 2013 - August 2013

Design and simulation of LTE Device-to-Device (D2D) discovery and synchronization. Study of channel models for LTE D2D use cases. Design and analysis of PHY layer signal design for off-network LTE D2D discovery and joint synchronization.

Network Engineer II Intern

Spring Nextel, Overland Park, KS | May 2012 - August 2012

Study on the impact of MIMO on 3G and 4G LTE networks, 1xEVDO RSSI analysis using data from RF Cockpit.

Graduate Research and Teaching Assistant

Kansas State University | August 2010 - September 2012

GRA in WiCom Research Group, Kansas State University. Main research was based on developing Redundant Residue Number System based Space Time Block Codes for Quasi-Static MIMO Wireless Channels.
Teaching duties included maintaining office hours and grading for Wireless Communications, Communication Systems I, Electronic Circuits and Control & Circuit Theory I; as well as instructing Micro-controller Laboratory at weekly laboratory meetings, grading lab work and final projects by students.

Publications

Google Scholar Profile

Journal Publications

Published Papers

  1. Fundamental Limits of Caching with Secure Delivery

    A. Sengupta, R. Tandon and T. C. Clancy
    IEEE Trans. On Information Forensics and Security, vol. 10, issue 2, pp 355-370, 13 January 2015.
    Related Talk: Information Theory of Coded Caching, Wireless@VT Seminar, April 2015.

  2. Dynamic Resource Allocation for Cooperative Spectrum Sharing in LTE Networks

    A. Kumar, A. Sengupta, R. Tandon and T. C. Clancy
    IEEE Transactions on Vehicular Technology, vol. 64, issue 11, pp 5232-5245, 18 December 2014.

  3. Performance of Systematic RRNS based Space-Time Block Codes with Probability-Aware Adaptive Demapping

    A. Sengupta, B. Natarajan
    IEEE Trans. On Wireless Communications, vol. 12, issue 5, pp 2458-2469, May 2013.

  4. Redundant Residue Number System based Space-Time Block Codes

    A. Sengupta, B. Natarajan
    Elsevier Physical Communication, vol. 12, pp 1-15, 30 September 2014.

  5. Modelling a Voice Activated Speaker Identification System using MFCC-Pitch-Formant Vector

    A. Sengupta, R. Ghosh
    Journal of The Institution of Engineers (India): Series B, vol. 93, issue 1, pp 51-56, 1 March 2012.
    (Sir Thomas Ward Memorial Prize for Best Paper, 2013 Indian Engineering Congress.)

Preprints

  1. Learning-Aided Collaborative Caching in Small Cell Networks

    A. Sengupta, S. Amuru, R. Tandon, R. M. Buehrer and T. C. Clancy
    Under Submission: IEEE/ACM Trans. On Networking, October 2016.
    Related Talk: Cache Aided Networks: From Practice to Theory? , Wireless@VT Seminar, September 2016.

  2. Improved Approximation of Storage-Rate Tradeoff for Caching with Multiple Demands

    A. Sengupta, R. Tandon
    arXiv preprint: 1606.04202, 14 June 2016. (In Revision: IEEE Trans. on Communications, September 2016)

  3. Cloud and Cache Aided Wireless Networks: Fundamental Latency Trade-Offs

    A. Sengupta, R. Tandon and O. Simeone
    arXiv preprint: 1605.01690, 6 May 2016. (Under submission: IEEE Trans. on Information Theory, May 2016)

  4. Fundamental Limits of Caching with Secure Delivery

    A. Sengupta, R. Tandon and T. C. Clancy
    arXiv preprint: 1312.3961, 11 December 2014. (Extended version of IEEE TIFS publication)

  5. Layered Caching for Heterogeneous Storage

    A. Sengupta, R. Tandon
    Under Submission: IEEE Trans. on Wireless Communications, December 2016.

Conference Publications

Published Papers

  1. Pipelined Fronthaul-Edge Content Delivery in Fog Radio Access Networks

    A. Sengupta, R. Tandon and O. Simeone
    Accepted at IEEE Globecom Workshops: Workshop on Emerging Technologies for 5G Wireless Cellular Networks, Dec 2016.

  2. Layered Caching for Heterogeneous Storage

    A. Sengupta, R. Tandon and T. C. Clancy
    Accepted at the 50th Asilomar Conference on Signals, Systems and Computers, Pacific Grove, CA, 6-9 November 2016.

  3. Malware Propagation in Fully Connected Networks: A Netflow-Based Analysis

    K. M. Straub, A. Sengupta, J. M. Ernst, R. W. McGwier, M. Watchorn, R. Tilley and R. Marchany
    Accepted at IEEE Military Communications Conference (MILCOM), Baltimore, MD, November 2016.

  4. Cloud RAN and Edge Caching: Fundamental Performance Trade-Offs

    A. Sengupta, R. Tandon and O. Simeone
    IEEE International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), Edinburgh, UK, July 2016.

  5. Cache Aided Wireless Networks: Tradeoffs between Storage and Latency

    A. Sengupta, R. Tandon and O. Simeone
    50th Annual Conference on Information Sciences and Systems (CISS), Princeton, NJ, 16-18 March 2016.

  6. Improved Approximation of Storage-Rate Tradeoff for Caching via New Outer Bounds

    A. Sengupta, R. Tandon and T. C. Clancy
    IEEE International Symposium on Information Theory (ISIT), pp 1691-1695, Hong Kong, 14-19 June 2015.

  7. Beyond Cut-Set Bounds - The Approximate Capacity of D2D Networks

    A. Sengupta, R. Tandon
    Information Theory and Applications Workshop (ITA), pp 78-83, San Diego, CA, 1-6 February 2015.

  8. Learning Distributed Caching Strategies in Small Cell Networks

    A. Sengupta, S. Amuru, R. Tandon, R. M. Buehrer, T. C. Clancy
    IEEE International Symposium on Wireless Communications Systems (ISWCS), pp 917-921, Barcelona, Spain, 26 August 2014.

  9. Secure Caching with Non-Uniform Demands

    A. Sengupta, R. Tandon and T. C. Clancy
    Global Wireless Summit (VITAE), pp 1-5, Aalborg, Denmark, May 2014.

  10. Decentralized Caching with Secure Delivery

    A. Sengupta, R. Tandon and T. C. Clancy
    IEEE International Symposium on Information Theory (ISIT), pp 41-45, Honolulu, HI, June 29 - July 4 2014.

  11. Fundamental Limits of Caching with Secure Delivery

    A. Sengupta, R. Tandon and T. C. Clancy
    IEEE International Conference on Communications (ICC) - Wireless Physical Layer Security Workshop, pp 771-776, Sydney, Australia, 10-14 June 2014.

  12. An Orthogonal Spectrum Sharing Scheme for Cognitive LTE Networks

    A. Padaki, A. Sengupta, M. Abdelbar, W. H. Tranter, J. H. Reed
    SDR WinnComm, pp 50-59, Chicago, IL, March 2014.

  13. On the Performance of Redundant Residue Number System Codes Assisted STBC Design

    A. Sengupta, D. Zhu, B. Natarajan
    IEEE International Conference on Computing, Networking and Communications (ICNC), pp 1051-1055, Maui, HI, 30 January 2012.

Preprints

  1. Cache aided wireless networks: Tradeoffs between Storage and Latency

    A. Sengupta, R. Tandon and O. Simeone
    arXiv preprint: 1512.07856, 24 December 2015. (Extended version of paper presented at CISS 2016)

Patent

System And Method For Heterogenous Spectrum Sharing Between Commercial Cellular Operators And Legacy Incumbent Users In Wireless Networks

Ashwin Amanna, Joseph Mitola III, T. C. Clancy, J. H. Reed, R. W. McGweir, A. Sengupta, A. Kumar
United States Patent Application: 13/835,012, Mar. 15, 2013.

Described herein are systems and methods for telecommunications spectrum sharing between multiple heterogeneous users, which leverage a hybrid approach that includes both distributed spectrum sharing, spectrum-sensing, and use of geo-reference databases.

Contact Me

Address: 476 Durham Hall,
1145 Perry Street, Blacksburg, VA 24060
Phone: (302) 690-4165
E-Mail: aviksg at vt dot edu