Old Website
IIT Roorkee Homepage
Abhay Kumar Sah

Abhay Kumar Sah

Assistant Professor

abhaysah@ece.iitr.ac.in
01332-284943
My Website

Wireless Communication, 5G and beyond Systems, Next Generation Massive MIMO Systems, Applications of Deep Learning

From To Designation Organisation
Mar 2020 Present Assistant Professor Indian Institute of Technology Roorkee
Sep 2019 Mar 2020 Lead Architect Radisys India Pvt. Ltd. Bangalore
Jan 2018 Sep 2019 Senior Software Engineer Samsung R&D Institute Bangalore
Award Institute Year Awarded
Samsung Citizen Award Samsung R&D Institute Bangalore 2019
Samsung Spot Award Samsung R&D Institute Bangalore 2018
Best PhD Thesis (Top-15) Indian National Academy of Engineering (INAE), New Delhi 2018
DST Inspire Faculty Fellowship Department of Science and Technology, New Delhi 2017
TCS Research Fellowship Tata Consultancy Services 2013
Best Teaching Assistant Award Dept. of Electrical Engineering, IIT Kanpur 2012
VC Gold Medal Jaypee University of Engineering & Technology, Guna 2012
Certificate of Excellence District Magistrate, Katihar 2018
Merit Award (10th) District Magistrate, Katihar 2003
Degree Subject University Year Studied
Ph.D. Electrical Engineering Indian Institute of Technology Kanpur 2017
B.Tech. Electronics & Communication Engineering Jaypee Institute of Engineering & Technology, Guna (M.P.) 2010
From To Designation Organisation Level
Feb 2021 Present Member Departmental Faculty Search Committee (DFSC)
Aug 2021 Present Member Departmental Academic Program Committee (DAPC)
Aug 2021 Present Faculty In-charge (FIC) Communication System Lab
Aug 2021 Present Faculty In-charge (FIC) Placement & Internship (PIC)
Scheme Sponsoring Agency Other Faculties Year Sponsored
Faculty Initiation Grant SRIC, IIT Roorkee NA 2021
Startup Research Grant Science and Engineering Research Board (SERB) NA 2021
Membership Details
Frontiers in Communications and Networks, (Review Editor, Communication Theory)
Title Course Code Course Semester
Linear Algebra and Random Processes ECN-511 M.Tech. + Ph.D. Autumn (2020-21)
Wireless Communication Systems ECN-611 B.Tech. (Final Year) + M.Tech. + Ph.D. Spring (2020-21)
Linear Algebra and Random Processes ECN-511 M.Tech. +Ph.D. Autumn (2021-22)
Wireless Technologies: 5G and Beyond ECN-618 B.Tech. (Final Year) + M.Tech. + Ph.D. Spring (2021-22)
Advanced Wireless Communication ECN-620 B.Tech. (Final Year) + M.Tech. + Ph.D. Spring (2020-21)
Topic Scholar Name Status of PhD Registration Year
Wireless Communication Santosh Kumar Singh Ongoing 2020
Wireless Communication Himanshu Kumar Shekhar Ongoing 2021
Wireless Communication Hari Shankar O K Ongoing 2021
Wireless Communication Debajit Choudhury Ongoing 2021
Course Name Sponsored By Date Participated
Advanced Topics in Coding Theory BITCOE, IIT Kanpur Oct. 2016
A Short Course on Communication CDTE, IIT Kanpur Apr. 2012
Cognitive Radio: The Next Frontier in Wireless Communications BITCOE, IIT Kanpur Nov. 2010
Title Place Date Delivered
Technologies Enabling 5G Communications Dept. of Electronics Engg., ZHCET, Aligarh Muslim University Feb 2019
MATLAB Examples Addressing Key Realization Issues for 5G Systems Dept. of Electronics Engg., ZHCET, Aligarh Muslim University Feb 2019
Low Complexity Detection in Massive MIMO Systems: A MATLAB Implementation IIT Kanpur Jan 2017
Massive MIMO: Its Journey, Reality, and Future IIT Kanpur (Via Zoom) Dec 2020
MASSIVE MIMO: The key enabler for 5G & beyond 5G systems NIT Jalandhar (Via Google Meet) Jan 2021
Intelligent Massive MIMO Samsung R&D Institute Bangalore (Via MS Teams) Feb 2021
Intelligent Massive MIMO for beyond 5G Systems IIIT Bangalore Aug 2021
An Introduction to Cell-Free Massive MIMO Systems NIT Delhi Oct 2021
Name Place Sponsored By Date
National Conference on Communications IIT Madras Dept. of EE, IIT Kanpur Feb. 2017
Shannon's Centenary Day IIT Kanpur BITCOE, IIT Kanpur Oct. 2016
IEEE International Conference on Communications (ICC) Kuala Lumpur, Malaysia IIT Kanpur May 2016
International Workshop on 5G RAN Design Kuala Lumpur, Malaysia IIT Kanpur May 2016
International Conference on COMmunication Systems and NETworkS (COMSNETS) Bangalore, India Organizer Jan. 2016
IEEE Global Communications Conference (GLOBECOM) San Diego, California Tata Consultancy Services Dec. 2015
IEEE Signal Processing and Communications (SPCOM) Bangalore, India Tata Consultancy Services July 2014
National Conference on Communications IIT Kanpur BITCOE, IIT Kanpur Feb. 2014
IEEE Signal Processing and Communications (SPCOM) Virtual (Online) Complementary July 2020
National Conference on Communications Virtual (Online) Complementary July 2021

Patents:


9. S.K. Vankayala, Abhay Kumar Sah, and G.S.V. Uma, “Hierarchical Coordinated Multi-point Processing for Uplink in 4G/5G/VRAN Systems” (201941043247)

8. Abhay Kumar Sah, S.K. Vankayala, and G.S.V. Uma, “Power Efficient and Low Complexity Receiver for a Wireless Communication and its Operating Method Thereof” (202041013448).

7. S.K. Vankayala, R. Gundeti, Abhay Kumar Sah, I. Kommineni, A. Nigam, S. Shetty, and G.S.V. Uma, “A Novel Iterative Method for LLR” (202041014792).

6. S.K. Vankayala, Abhay Kumar Sah, A. Nigam, G.S.V. Uma, and T. Mittra “Method for Optimal HARQ Chase Combining for 4G/5G/VRAN/CRAN Systems” (201941042232).

5. S.K. Vankayala, S. Madhurapantula, A. Nigam, A. Bhat, Abhay Kumar Sah, and Sudharsan Parthasarthy, “Base Station CQI prediction using ML” (201941047831).

4. Abhay Kumar Sah, S. K. Vankayala, Uma Kishore Godavarti, and Ashok K. Reddy Chavva, “Method and system for combining incoming signals” (202041004871). 

3. S.K. Vankayala, J. Akhtar, Abhay Kumar Sah, N. Srinivasan, G.S.V. Uma, and R. Gundeti, “Methods and Systems for Detecting Primary Synchronization Signal (PSS) in a Wireless Network” (US20200313783A1/201941013045).

2. Abhay Kumar Sah and A.K. Chaturvedi, “Low Complexity Detection in Multiple Input Multiple Output Systems” (201811029113).

1. Abhay Kumar Sah and A.K. Chaturvedi, “A Neighborhood Search based Large Multiple Input Multiple Output Detector” (201811029143).


Journal Publications (in reverse chronology):


9. R. Gupta, K. Lakshmanan, and Abhay Kumar Sah, “Beam alignment for mmWave using non-stationary bandits”, IEEE Communications Letters, vol. 22, no. 10, pp. 2619-2622, Nov. 2020.

8. Shyam Gadhai, Abhay Kumar Sah, A.K. Singh, R. Budhiraja, and A.K. Chaturvedi, “New Block-based Spatial Modulation”, IEEE Communications Letters, vol. 22, no. 10, pp. 2016-2019, Oct. 2018.

7. Pushpender Mann, Abhay Kumar Sah, R. Budhiraja, and A.K. Chaturvedi, “Bit-level Reduced Neighborhood Search for Low-complexity Detection in Large MIMO Systems”, IEEE Wireless Communications Letters, vol. 7, no. 2, pp. 146-149, Apr. 2018.

6. Abhay Kumar Sah and A.K. Chaturvedi, “Sequential and Global Likelihood Ascent Search based Detection in Large MIMO Systems”, IEEE Transactions on Communications, vol. 66, no. 2, pp. 713-725, Feb. 2018. 

5. Saksham Agarwal*, Abhay Kumar Sah*, and A.K. Chaturvedi, “Likelihood Based Tree Search for Low Complexity Detection in Large MIMO Systems”, IEEE Wireless Communications Letters, vol. 6, no. 4, pp. 450-453, Aug. 2017. (* equal contribution)

4. Abhay Kumar Sah and A.K. Chaturvedi, “An Unconstrained Likelihood Ascent based Detection Algorithm for Large MIMO Systems”, IEEE Transactions on Wireless Communications, vol. 16, no. 4, pp. 2262-2273, Apr. 2017.

3. Abhishek*, Abhay Kumar Sah*, and A.K. Chaturvedi, “An MMP based Approach for Detection in Large MIMO Systems using Sphere Decoding”, IEEE Wireless Communications Letters, vol. 6, no. 2, pp. 158-161, Apr. 2017. (* equal contribution)

2. Abhay Kumar Sah and A.K. Chaturvedi, “Quasi-Orthogonal Combining for Reducing RF Chains in Massive MIMO Systems”, IEEE Wireless Communications Letters, vol. 6, no. 1, pp. 126-129, Feb. 2017.

1. Abhay Kumar Sah and A.K. Chaturvedi, “Stopping Rule based Iterative Tree Search for Low-Complexity Detection in MIMO Systems”, IEEE Transactions on Wireless Communications, vol. 16, no. 1, pp. 169-179, Jan. 2017.


Conference Publications (in reverse chronology):


14. Yatharth Bansal and Abhay Kumar Sah, "An Untrained DNN Denoiser for Next-Gen Massive MIMO Channel Estimation", IEEE International Conference on Communications (ICC) 2022, Seoul, South Korea. (Under Review)

13. Abhay Kumar Sah, Santosh. K. Singh, S.K. Vankayala, S. Parthasarthy, G.S.V. Uma, and S. Yoon, "Low-cost Beam-combining Architecture for Linear Detection in 5G mmWave Massive MIMO Systems", IEEE International Conference on Communications (ICC) 2022, Seoul, South Korea. (Under Review)

12. Sahaj Kumar Jha, Abhay Kumar Sah, and Sonia Aïssa, "Beam Combining in Massive MIMO System under Non-Linear Hardware Impairments", IEEE Wireless Communications and Networking Conference (WCNC) 2022, Austin, TX, USA. (Accepted)

11. S.K. Vankayala*, R. Gundeti, K.G. Shenoy, Abhay Kumar Sah, Swaraj K., and S. Yoon, "A Framework for Exploiting Hard and Soft LLRs for Low Complexity Decoding in VRAN Systems", Proc. IEEE Wireless Communications and Networking Conference (WCNC), Nanching, China, Mar. 2021. 

10. S. Parthasarthy*, Abhay Kumar Sah, and S.K. Vankayala, "Analysis of Downlink NOMA in Full Duplex-Half Duplex Mixed Cell PPP System with Interference", Proc. IEEE International Conference on Advanced Networks and Telecommunications Systems (ANTS), New Delhi, India, Dec. 2020 [Virtual] 

9. S.K. Vankayala*, Javed Akhtar, Ashok Krishnan, and Abhay Kumar Sah, “Accelerated Detection Schemes for PSS in 5G-NR”, Proc. IEEE 3rd 5G World Forum (5GWF), Bangalore, India, Sep. 2020 [Virtual].

8. Shyam Gadhai, Abhay Kumar Sah, R. Budhiraja, and A.K. Chaturvedi, “Generalized Block-Based Spatial Modulation and Space Shift Keying”, Proc. 20th IEEE International Workshop on Signal Processing Advances in Wireless Communications (SPAWC 2019), Cannes, France, Jul. 2019.

7. Abhishek, Abhay Kumar Sah, and A.K. Chaturvedi, “Improved Sparsity Behaviour and Error Localization in Detectors for Large MIMO Systems”, Proc. IEEE Global Communications Conference (GLOBECOM), Washington DC, USA, Dec. 2016.

6. Abhay Kumar Sah and A.K. Chaturvedi, “Beyond Fixed Neighborhood Search in the Likelihood Ascent Algorithm for MIMO Systems”, Proc. IEEE International Conference on Communications (ICC), Kuala Lumpur, Malaysia, May 2016.

5. Vipul Gupta, Abhay Kumar Sah, and A.K. Chaturvedi, “Iterative Matrix Inversion Based Low Complexity Detection in Large/Massive MIMO Systems”, Proc. IEEE International Conference on Communications (ICC), Kuala Lumpur, Malaysia, May 2016.

4. Abhay Kumar Sah and A.K. Chaturvedi, “Improving the Reliability of Receivers for 5G Networks”, Proc. Eighth International Conference on COMmunication Systems and NETworkS (COMSNETS), Bangalore, India, Jan. 2016. (Short Paper)

3. Abhay Kumar Sah and A.K. Chaturvedi, “Reduced Neighborhood Search Algorithms for Low Complexity Detection in MIMO Systems”, Proc. IEEE Global Communications Conference (GLOBECOM), San Diego, California, USA, Dec. 2015.

2. Abhay Kumar Sah and A.K. Chaturvedi, “An Upper Bound on the Performance of K-best Detection for MIMO Systems”, Proc. IEEE Signal Processing and Communications (SPCOM), 22-25 July 2014.

1. Ravi Kumar, Rajiv Saxena, Abhay Sah, Saroj Gupta, and Tapesh Chandgothia, “Performance of Dynamic MIMO Systems in Presence of Nakagami Fading Channel”, Proc. IEEE Computational Intelligence, Communication Systems and Networks (CICSyN), Liverpool, UK, 28-30 July 2010.

Total Citations
h-index
i10-index