Avik Ranjan Adhikary

Distinguished Associate Researcher, SWJTU, China.

About Myself

Distinguished Associate Researcher, SWJTU, China.

  • Degree: PhD, Mathematics
  • Email: avik.adhikary@ieee.org

I obtained my B.Sc. (Hons.) degree in Mathematics from the Ramakrishna Mission Vidyamandira (RKMV) at the University of Calcutta (CU) in Kolkata, India, in 2011. In 2013, I earned my M.Sc. degree in Mathematics from the Department of Mathematics at IIT Guwahati (IITG) in India. I completed my Ph.D. in Mathematics at IIT Patna (IITP), India, in 2019. From August 2015 to January 2016, I worked as a Visiting Research Fellow at Nanyang Technological University (NTU) in Singapore. I then served as a Post-Doctoral Fellow in the Department of Mathematics at Southwest Jiaotong University (SWJTU) in Chengdu, China, from June 2019 to June 2023. Since August 2023, I have been working as a Distinguished Associate Researcher in the Department of Mathematics at SWJTU.

Resume

Education

PhD

2013 - 2019

Indian Institute of Technology Patna, IN

  • Thesis Title: Constructions and Analysis of Binary Z-Complementary Sequences.
  • Thesis objective: To design binary sequences which have low/zero correlation magnitude at all non-zero time-shifts within a certain region around the in-phase position and also have low PMEPR.
  • 5 IEEE Publications, 3 Conference Publications.

M.Sc. Mathematics and Computing

2011 - 2013

Indian Institute of Technology Guwahati, IN

  • Learned Matlab.

B.Sc. Mathematics (Hons.)

2008 - 2011

University of Calcutta, Kolkata, IN

College: Ramakrishna Mission Vidyamandira, Belur Math, Howrah, Kolkata, IN.

Professional Experience

Distinguished Associate Researcher

2023 - Present

SWJTU, Chengdu, China

  • Gained experience in handling PhD students.
  • Taught Matrix Analysis (M2401001/LM34002001) in the following semesters:
    • 2025-2026 autumn semester
    • 2024-2025 autumn semester
    • 2023-2024 autumn semester
  • Published 14 Journals, & 2 Conference papers.

Postdoc. Fellow

2019 - 2023

SWJTU, Chengdu, China

  • Gained experience in handling PhD students.
  • Learned algebraic coding and Magma.
  • Learned Machine Learning algorithms to solve various sequence design problems.
  • Published 16 Journals, & 6 Conference papers.

Research Interest

Broadly, I am interested in designing sequences using algebraic and combinatorial tools for application in communication and radar systems. I am also interested in applying Machine learning algorithms to solve various sequence design problems. Specifically, I am interested in designing sequences for

  • Code domain NOMA
  • Radar waveform design
  • Integrated radar Communication Systems (RadCom)

33

Journals published

09

Conference papers published

3

Projects completed as PI

Publications

Journals

  1. Avik R. Adhikary, T. Yu, Z. Zhou, H. Zhang, " Periodic Quasi Complementary Sequence Sets: New Bounds and Optimal Constructions," Accepted at IEEE Transactions on Communications, Early Access, Oct. 2025.
  2. T. Yu, Y. Yang, Avik R. Adhikary and Z. Zhou, " A Construction of Z-Complementary Code Sets Based on Partially $m$-shift Orthogonal Complementary Codes," Accepted at Cryptography and Communications, Early Access, Feb. 2025.
  3. Avik R. Adhikary, H. Zhang, Z. Zhou, Q. Wang and S. Mesnager, " Quasi Complementary Sequence Sets: New Bounds and Optimal Constructions via Quasi-Florentine Rectangles," IEEE Transactions on Information Theory, vol. 71, no. 3, pp. 2271-2291, Mar. 2025.
  4. Z. Gu, Z. Zhou, P. Fan, Avik R. Adhikary, and Z. Liu, " Oversampled Low Ambiguity Zone Sequences for Channel Estimation over Doubly Selective Channels," IEEE Transactions on Communications, vol. 73, no. 4, pp. 2616-2630, April 2025.
  5. Y. -X. Zhang, Z. Zhou, X. He, Avik R. Adhikary, and B. Dutta, " Data-Driven Knowledge Fusion for Deep Multi-Instance Learning," IEEE Transactions on Neural Networks and Learning Systems, vol. 36, no. 5, pp. 8292-8306, May 2025.
  6. H. Zhang, C. Fan, Avik R. Adhikary, M. Yang," A unified construction of type-I even length Z-complementary pairs based on generalized Boolean function," Advances in Mathematics of Communications, Vol. 19, Issue 2, pp. 572-587, 2025.
  7. K. Liu, Z. Zhou, Avik R. Adhikary, and C. Tang, " Large Sets of Binary Spreading Sequences With Low Correlation and Low PAPR via Gold Functions," IEEE Transactions on Information Theory, vol. 70, no. 7, pp. 5309-5322, Jul. 2024.
  8. Z. Gu, Z. Zhou, Avik R. Adhikary, P. Fan and Y. Yang, " Generalized Zadoff-Chu Sequences With Low PMEPR Property," IEEE Signal Processing Letters, vol. 31, pp. 1174-1178, Apr. 2024.
  9. S. Zhang, Z. Zhou, S. Zhang, Avik R. Adhikary, "Improved coprime-like arrays on limited platform," Signal Processing, Vol. 220, article number 109474, Jul. 2024.
  10. S. Liu, Z. Zhou, Avik R. Adhikary, and Y. Yang, "Generalized Supersets of Zadoff-Chu Sequences to Overcome 5G PRACH Capacity Shortfall, " Cryptography and Communications, Vol. 16, pp. 89–108, Jan. 2024.
  11. Z. Zhou, B. Liu, B. Shen, Avik R. Adhikary, and P. Fan, "Doppler-resilient waveform design in integrated MIMO radar-communication systems," Science China Information Sciences, Vol. 67, article number 112301, Dec. 2023.
  12. W. Wang, Z. Gu, Avik R. Adhikary, R. Luo, "A Novel Approach to Construct Huffman Sequences with Low PAPR, " IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, Vol. E107.A, Issue 7, pp. 1003-1010, Oct. 2023.
  13. Y. -X. Zhang, H. Meng, X. M. Cao, Z. Zhou, M. Yang, Avik R. Adhikary, "Interpreting vulnerabilities of multi-instance learning to adversarial perturbations, " Pattern Recognition, Vol. 142, article number 109725, Oct. 2023.
  14. K. Liu, Z. Zhou, Avik R. Adhikary, and R. Luo, "New Sets of Non-orthogonal Spreading Sequences with Low Correlation and Low PAPR using Extended Boolean Functions, " Design, Codes and Cryptography, Vol. 91, pp. 3115–3139, Oct. 2023.
  15. B. Liu, Z. Zhou, Y. Yang, Avik R. Adhikary, and P. Fan, "Constructions of Binary Signature Sets With Optimal Odd Total Squared Correlation and Their Application to Device Activity Detection, " IEEE Transactions on Intelligent Transportation Systems, vol. 24, no. 2, pp. 2084-2096, Feb. 2023.
  16. Z. Gu, Z. Zhou, Avik R. Adhikary, and P. Fan, "Two-Dimensional Golay Complementary Array Pairs With Flexible Size and Large Zero Correlation Zone, " Cryptography and Communications, Vol. 15, pp. 709-717, May 2023.
  17. Z. Gu, Z. Zhou, Avik R. Adhikary, Y. Feng, and P. Fan, "Asymptotically Optimal Golay-ZCZ Sequence Sets with Flexible Length, " Chinese Journal of Electronics, Vol. 32, no. 4, pp. 806-820, July 2023.
  18. Y. Tao, Avik R. Adhikary, Y. Wang, Y. Yang, "New Class of Optimal Z-Complementary Code Sets, " IEEE Signal Processing Letters, vol. 29, pp. 1477-1481, 2022.
  19. W. Wu, Z. Zhou, Avik R. Adhikary, B. Dutta, "Discrete space reinforcement learning algorithm based on twin support vector machine classification, " Pattern Recognition Letters, Vol. 164, pp. 254-260, Nov. 2022.
  20. Avik R. Adhikary, Y. Feng, Z. Zhou and P. Fan, "Asymptotically Optimal and Near-Optimal Aperiodic Quasi-Complementary Sequence Sets Based on Florentine Rectangles, " IEEE Transactions on Communications, vol. 70, no. 3, pp. 1475-1485, March 2022.
  21. S. Tian, M. Yang, J. Wang, R. Wang, and Avik R. Adhikary, "Improved Metric Function for AlphaSeq Algorithm to Design Ideal Complementary Codes for Multi-Carrier CDMA Systems, " IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, Vol.E105-A, No.5, pp.901-905, 2021.
  22. C. Liu, S. Liu, X. Lei, Avik. R. Adhikary, and Z. Zhou, "Three-phase Z-complementary triads and almost complementary triads, " Cryptography and Communications, Vol.13, pp.763-773, 2021.
  23. M. Yang, S. Tian, N. Li and Avik R. Adhikary, " New Sets of Quadriphase Cross Z-Complementary Pairs for Preamble Design in Spatial Modulation, " IEEE Signal Processing Letters, vol. 28, pp. 1240-1244, 2021.
  24. C. Fan, D. Zhang and Avik R. Adhikary," New Sets of Binary Cross Z-Complementary Sequence Pairs," IEEE Communications Letters, vol. 24, no. 8, pp. 1616-1620, Aug. 2020.
  25. Zhengchun Zhou, Fangrui Liu, Avik R. Adhikary, Pingzhi Fan," A Generalized Construction of Multiple Complete Complementary Codes and Asymptotically Optimal Aperiodic Quasi- Complementary Sequence Sets," IEEE Transactions on Communications, vol. 68, no. 6, pp. 3564-3571, June 2020
  26. Gaoxiang Wang, Avik R. Adhikary, Zhengchun Zhou, Yang Yang," Generalized Constructions of Complementary Sets of Sequences of Lengths Non-Power-of-Two," IEEE Signal Processing Letters, vol. 27, pp. 136-140, Jan. 2020.
  27. Avik R. Adhikary, P. Sarkar, S. Majhi," Direct Construction of q-ary Even Length ZComplementary Pairs Using Generalized Boolean Functions," IEEE Signal Processing Letters, vol. 27, pp. 146-150, Jan. 2020.
  28. Avik R. Adhikary, S. Majhi, Z. Liu and Y. L. Guan," New Sets of Optimal Odd-length Binary Z-Complementary Pairs," IEEE Transactions on Information Theory, vol. 66, no. 1, pp. 669-678, Jan. 2020.
  29. Avik R. Adhikary, S. Majhi," New Construction of Optimal Aperiodic Z-Complementary Sequence Sets of Odd-lengths," Electronics Letters, vol. 55, no. 19, pp. 1043-1045, Sept. 2019.
  30. Avik R. Adhikary, S. Majhi," New Constructions of Complementary Sets of Sequences of Lengths Non-Power-of-Two," IEEE Communications Letters, vol. 23, no. 7, pp. 1119-1122, July 2019.
  31. Z. Gu, Z. Zhou, Y. Yang, Avik R. Adhikary, and X. Cai," Deterministic Compressed Sensing Matrices From Sequences With Optimal Correlation," IEEE Access, vol. 7, pp. 16704-16710, 2019.
  32. Avik R. Adhikary, S. Majhi, Z. Liu, Y. L. Guan," New sets of even-length binary Z-complementary pairs with asymptotic ZCZ ratio of 3/4," IEEE Signal Processing Letters, vol. 25, no. 07, pp. 970-973, Jul. 2018.
  33. Avik R. Adhikary, Z. Liu, Y. L. Guan, S. Majhi and S. Budishin," Optimal Binary Periodic Almost-Complementary Pairs," IEEE Signal Processing Letters, vol. 23, no. 12, pp. 1816-1820, Aug. 2016.

Conferences

  1. Avik R. Adhikary, Z. Zhou, and Y. Yang, "Circular quasi-Florentine rectangles and its application in designing optimal polyphase sequence sets," accepted at 2024 Sequences and Their Applications (SETA), Essex, UK, 2024.
  2. T. Yu, Y. Yang, Avik R. Adhikary, and Z. Zhou, "A construction of optimal Z-complementary code sets on partially m-shift orthogonal complementary codes," accepted at 2024 Sequences and Their Applications (SETA), Essex, UK, 2024.
  3. Z. Gu, Avik R. Adhikary, Z. Zhou, and M. Yang, "A Computational Design of Unimodular Complementary and Z-Complementary Sets," accepted at 2023 IEEE International Symposium on Information Theory (ISIT), Taipei, Taiwan, 2023.
  4. Avik R. Adhikary, Z. Zhou, "More Optimal Quasi Complementary Sequence Sets From Florentine Rectangles," accepted at The 10th IEEE International Workshop on Signal Design and its Applications in Communications(IWSDA), Essex, UK, 2022.
  5. Y. Xiang, Z. Gu, Avik R. Adhikary and R. Ren, "A New Class of Z-Complementary Pairs and Their Application in Channel Estimation for Mountainous Terrain," accepted at The 10th IEEE International Workshop on Signal Design and its Applications in Communications(IWSDA), Essex, UK, 2022.
  6. Y. Yu, Z. Gu, Avik R. Adhikary, W. Guo, and R. Luo, "A New Algorithm for Searching Sequences with Low PAPR via Goal Attainment Method," The 10th IEEE International Workshop on Signal Design and its Applications in Communications(IWSDA), Essex, UK, 2022.
  7. Z. Gu, Avik R. Adhikary, Z. Zhou, and P. Fan, "A Computational Design of Aperiodic Mismatched Filtering Sequences," accepted at 2022 IEEE International Symposium on Information Theory (ISIT), Espoo, Finland}, 2022.
  8. Z. Gu, Z. Zhou, Avik R. Adhikary, Y. Feng and P. Fan, "Construction of Golay-ZCZ Sequences with New Lengths," 2021 IEEE International Symposium on Information Theory (ISIT), Melbourne, Australia, 2021, pp. 1802-1805.
  9. Avik R. Adhikary, S. Majhi, Z. Liu and Y. L. Guan," New Optimal Binary Z-Complementary Pairs of Odd Lengths," The 8th IEEE International Workshop on Signal Design and its Applications in Communications(IWSDA), Sapporo, Japan, September 24-28, 2017.
  10. A. Samad, Avik R. Adhikary and S. Majhi," Receiver design for quasi-asynchronous MC-CDMA by using QCSS code," 2016 International Conference on Communication and Signal Processing (ICCSP), Melmaruvathur, pp. 1159-1163, 2016.
  11. S. Singh, Avik R. Adhikary, A. Samad and S. Majhi," Design and performance analysis of quasi-asynchronous SC-FDMA-CDMA system using quasi complementary sequence sets," 2016 International Conference on Advances in Computing, Communications and Informatics (ICACCI),, Jaipur, pp. 1752-1756, 2016.

Contact

Please drop me an email, if needed. Thank you.