Twisted Signals for ISAC Exploring OAM for Integrated Sensing and Communications
ABSTRACT:
Electromagnetic waves are characterized by their amplitude, frequency, and state of polarization -- also referred to as spin angular momentum (SAM), associated with circular polarization and recognized for over two centuries. In contrast, over the past three decades, growing attention has been directed toward orbital angular momentum (OAM), which arises from helical (twisted) phase fronts and provides an additional degree of freedom through its orthogonal modal structure. In this talk, we explore the use of OAM for integrated sensing and communications (ISAC), with the goal of enhancing spectral efficiency and spatial resolution in automotive scenarios. Unlike conventional uniform circular array (UCA)-based implementations, our approach employs a uniform linear array (ULA) with traveling-wave antennas to synthesize multiple Laguerre-Gaussian vortex beams. The proposed system embeds communication data within radar waveforms while enabling joint estimation of target position and velocity using radar-only frames. An OAM-based mode-division multiplexing strategy is used to separate sensing and communication functionalities, ensuring reliable parameter recovery. We conclude with perspectives on the future of ISAC systems.
BIO:
Kumar Vijay Mishra obtained a Ph.D. in electrical engineering and M.S. in mathematics from The University of Iowa in 2015, and M.S. in electrical engineering from Colorado State University in 2012, while working on NASA’s Global Precipitation Mission Ground Validation (GPM-GV) weather radars. He received his B. Tech. summa cum laude (Gold Medal, Honors) in electronics and communication engineering from the National Institute of Technology, Hamirpur (NITH), India in 2003. He is a Senior Fellow at the United States DEVCOM Army Research Laboratory; 2026 BEL Endowed Visiting Chair Professor in Radar Systems at the Indian Institute of Science, Bangalore; and Technical Adviser to Singapore-based automotive radar start-up Hertzwell.
Dr. Mishra is Fellow of International Union of Radio Science (URSI). He has served as the Distinguished Lecturer of five IEEE societies and Optica. He is the recipient of the IEEE AESS Harry Rowe Mimno Award (2026), SAE International Award for Excellence in Innovation (2025), IEEE Signal Processing Society Pierre-Simon Laplace Early Career Technical Achievement Award (2024), IET Premium Best Paper Prize (2021), IEEE T-AES Outstanding Editor (2021, 2023, 2024, 2025), and U. S. National Academies Harry Diamond Distinguished Fellowship (2018-2021).
Dr. Mishra is Chair (2023-2029), URSI Commission C and Chair (2025-) of IEEE AESS Technical Working Group on Integrated Sensing and Communications (ISAC-TWG). He is Editor-in-Chief (EiC) of River Rapids Series in Radar Systems, Signal Processing, Antennas and Electromagnetics (2025-), Editor (Deputy EiC) of Radio Science (2025-), Senior Area Editor of IEEE Transactions on Signal Processing (2024-), and Associate Editor of IEEE Transactions on Aerospace and Electronic Systems (2020-) and IEEE Transactions on Antennas and Propagation (2023-). He is the lead co-editor of several books on signal processing and radar: Signal Processing for Joint Radar-Communications (Wiley-IEEE Press, 2024), Next-Generation Cognitive Radar Systems (IET Press Electromagnetics and Radar Series, 2023), Advances in Weather Radar Volumes 1, 2 & 3 (IET Press Electromagnetics and Radar Series, 2023), and Handbook of Statistics 54: Multidimensional Signal Processing (Elsevier). His research interests include radar systems, signal processing, remote sensing, and electromagnetics.
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- 10555 West Flagler Street
- Miami, Florida
- United States 33174
- Building: FIU EC
- Room Number: EC3930
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Kumar Vijay Mishra obtained a Ph.D. in electrical engineering and M.S. in mathematics from The University of Iowa in 2015, and M.S. in electrical engineering from Colorado State University in 2012, while working on NASA’s Global Precipitation Mission Ground Validation (GPM-GV) weather radars. He received his B. Tech. summa cum laude (Gold Medal, Honors) in electronics and communication engineering from the National Institute of Technology, Hamirpur (NITH), India in 2003. He is a Senior Fellow at the United States DEVCOM Army Research Laboratory; 2026 BEL Endowed Visiting Chair Professor in Radar Systems at the Indian Institute of Science, Bangalore; and Technical Adviser to Singapore-based automotive radar start-up Hertzwell.
Dr. Mishra is Fellow of International Union of Radio Science (URSI). He has served as the Distinguished Lecturer of five IEEE societies and Optica. He is the recipient of the IEEE AESS Harry Rowe Mimno Award (2026), SAE International Award for Excellence in Innovation (2025), IEEE Signal Processing Society Pierre-Simon Laplace Early Career Technical Achievement Award (2024), IET Premium Best Paper Prize (2021), IEEE T-AES Outstanding Editor (2021, 2023, 2024, 2025), and U. S. National Academies Harry Diamond Distinguished Fellowship (2018-2021).
Dr. Mishra is Chair (2023-2029), URSI Commission C and Chair (2025-) of IEEE AESS Technical Working Group on Integrated Sensing and Communications (ISAC-TWG). He is Editor-in-Chief (EiC) of River Rapids Series in Radar Systems, Signal Processing, Antennas and Electromagnetics (2025-), Editor (Deputy EiC) of Radio Science (2025-), Senior Area Editor of IEEE Transactions on Signal Processing (2024-), and Associate Editor of IEEE Transactions on Aerospace and Electronic Systems (2020-) and IEEE Transactions on Antennas and Propagation (2023-). He is the lead co-editor of several books on signal processing and radar: Signal Processing for Joint Radar-Communications (Wiley-IEEE Press, 2024), Next-Generation Cognitive Radar Systems (IET Press Electromagnetics and Radar Series, 2023), Advances in Weather Radar Volumes 1, 2 & 3 (IET Press Electromagnetics and Radar Series, 2023), and Handbook of Statistics 54: Multidimensional Signal Processing (Elsevier). His research interests include radar systems, signal processing, remote sensing, and electromagnetics