Anubhab Chowdhury

I am a Ph.D. student at the Dept. of ECE, Indian Institute of Science. My advisor is Prof. Chandra R. Murthy. My current research focus is on cell-free massive MIMO systems. Here is a short video about my research work. Here is the link to my new webpage https://sites.google.com/view/anubhab-chowdhury/home.

I completed my M. Tech. in Communication Engineering from the Electronics and Electrical Engineering Department, Indian Institute of Technology, Guwahati. I obtained my B.Tech. in Electronics and Communication Engineering from Jalpaiguri Govt. Engineering College, West Bengal. My CV is available here. Google Scholar, ORCID, Linkedln

My research investigates fundamental physical layer design aspects of both cellular and cell-free massive MIMO communications. Some of the areas I am currently working on/worked in the past are:

1. CSI Acquisition in Massive MIMO Systems
2. Dynamic TDD Enabled Cell-Free Massive MIMO
3. Full-Duplex Massive MIMO Systems
4. Effects Channel Aging in Massive MIMO Systems

[J1] A. Chowdhury and C. R. Murthy, Half-Duplex APs with Dynamic TDD versus Full-Duplex APs in Cell-Free Systems, Accepted, IEEE Transactions on Communications, Jan. 2024. Early Access, ArXiv.

[J1] A. Chowdhury and C. R. Murthy, On the Sum Spectral Efficiency of Dynamic TDD Enabled Cell-Free Massive MIMO Systems, IEEE Wireless Communications Letters, vol. 12, no. 3, pp. 481-485, March 2023, doi: 10.1109/LWC.2022.3231584.IEEE Xplore.

[J1] Anubhab Chowdhury, Ribhu Chopra, and Chandra R. Murthy, Can Dynamic TDD Enabled Half-Duplex Cell-Free Massive MIMO Outperform Full-Duplex Cellular Massive MIMO?, IEEE Transactions on Communications, vol. 70, no. 7, pp. 4867-4883, Jul. 2022., ArXiv, IEEE Xplore.

[J2] Anubhab Chowdhury, Pradip Sasmal, Chandra R. Murthy, and Ribhu Chopra, On the Performance of Distributed Antenna Array Systems with Quasi-Orthogonal Pilots, IEEE Transactions on Vehicular Technology, vol. 71, no. 3, pp. 3326-3331, Mar. 2022. IEEE Xplore. Supplementary material for this paper can be found here.

[J1] Anubhab Chowdhury, Ribhu Chopra, Frame Structures for Massive MIMO Communications Under Channel Aging, Wireless Personal Communications, 111, 2659–2669 (2020), Springer Science

[C1] Anubhab Chowdhury and Chandra R. Murthy, Pilot Length Minimization via AP-UE Clustering in Cell-Free Systems, IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Seoul, Korea, Apr. 2024.

[C1] Anubhab Chowdhury and Chandra R. Murthy, How Resilient are Cell-Free Massive MIMO OFDM Systems to Propagation Delays?, IEEE 24th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), Shanghai, China, Sep. 2023, Poster, IEEE Xplore.

[C2] Anubhab Chowdhury and Chandra R. Murthy, Comparative Study of Dynamic TDD with Full-Duplex in Cell-Free Massive MIMO Systems, Proc. National Conference on Communications, Guwahati, India, Feb. 2023, IEEE Xplore.

[C1] Anubhab Chowdhury, Chandra R. Murthy, and Ribhu Chopra, Dynamic TDD Enabled Distributed Antenna Array Massive MIMO System, Proc. IEEE SAM, Trondheim, Norway, June 2022, Video, Poster, IEEE Xplore.

[C2] Anubhab Chowdhury, Pradip Sasmal, and Chandra R. Murthy, Comparison of Orthogonal vs.Union of Subspace Based Pilots for Multi-Cell Massive MIMO Systems, Proc. IEEE SPAWC, Atlanta, Georgia, USA, May 2020, IEEE Xplore.

[C3] Anubhab Chowdhury, Ribhu Chopra, Chandra R. Murthy, and Himal A. Suraweera, On the Achievable Rates of Full-Duplex Massive MIMO Systems Under Channel Aging, Proc. IEEE SPAWC, Cannes, France, July 2019, IEEE Xplore.

1. During Ph.D.: Matrix Theory, Information Theory, Adaptive Signal Processing, Wireless Communication, Compressive Sensing & Sparse Signal Processing, Communication System Design
2. During M.Tech.: Advanced Topics in Probability, MIMO Wireless Communications, Detection and Estimation Theory, Linear Algebra and Optimization

1. Visiting faculty: Matrix Theory, 2021 Jan-May term, PES University, Bengaluru. (Total hours spent: 60 hrs., 3 lectures/week)
2. Teaching Assistant: E2 201 Information Theory, 2021 Aug-Dec term, Dept. of ECE, IISc.
3. Visiting faculty: Mathematics for Machine Learning, 2022 Jan-May term, PES University, Bengaluru. (3 lectures/week)
4. Visiting faculty: Mathematics for Machine Learning, 2023 Aug-Dec term, DS University, Bengaluru. (3 lectures/week)
5. Teaching Assistant: E1-219o Linear Algebra , 2022 Aug-Dec term, Dept. of ECE, IISc.

• IEEE Transactions on Communications
• IEEE Transactions on Wireless Communications
• IEEE Transactions on Vehicular Technology
• IEEE Wireless Communications Letters
• IEEE/ACM Transactions on Networking

• NCC, 2023
• Proc. IEEE ICC, 2023
• Proc. IEEE SPAWC, 2022
• Proc. IEEE EuCNC, 2020
• Proc. IEEE ISWCS, 2019

1. Lab: Signal Processing for Communication, Signal Processing Building, West Wing, Room SPW202.
2. e-mail: anubhabc@iisc.ac.in/ anubhabcob.2013@gmail.com
3. Mobile: +91-9932728331