Prof. Fan Liu
Southern University of Science and Technology (SUSTech), Shenzhen, China
3rd October 2023, 04:00pm - 05:00pm (GST)
| Title: | Information-Theoretic Limits of Integrated Sensing and Communications Under Gaussian Channels |
| Abstract: | Integrated Sensing and Communication (ISAC) is recognized as a promising technology for both the next-generation wireless networks and radar systems. In this talk, we consider a P2P ISAC model under vector Gaussian channels, and propose to use the CRB-rate region as a basic tool for depicting the fundamental sensing and communications (S&C) tradeoff. We characterize the S&C performance at the two corner points of the CRB-rate region. In particular, we derive the high-SNR communication capacity at the sensing-optimal point, and provide lower and upper bounds for the sensing CRB at the communication-optimal point. Our main results reveal a two-fold tradeoff in ISAC systems, consisting of the subspace tradeoff (ST) and deterministic-random tradeoff (DRT) that depend on the resource allocation and data modulation schemes employed for S&C, respectively. Finally, we will investigate the generalized DRT based on the sensing mutual information from the perspective of rate-distortion theory. |
| Bio: | Fan Liu (Senior Member, IEEE) is currently an Assistant Professor of the Department of Electronic and Electrical Engineering, Southern University of Science and Technology (SUSTech), Shenzhen, China. He received the Ph.D. and the BEng. degrees from Beijing Institute of Technology (BIT), Beijing, China, in 2018 and 2013, respectively. He has previously held academic positions in the University College London (UCL), London, UK, first as a Visiting Researcher from 2016 to 2018, and then as a Marie Curie Research Fellow from 2018 to 2020. Dr. Liu's research interests lie in the general area of signal processing and wireless communications, and in particular in the area of Integrated Sensing and Communications (ISAC). He has 10 papers selected as IEEE ComSoc Best Readings. He is the founding Academic Chair of the IEEE ComSoc ISAC Emerging Technology Initiative (ISAC-ETI), a founding member of the IEEE SPS ISAC Technical Working Group (ISAC-TWG), an Associate Editor of the IEEE Open Journal of Signal Processing and the IEEE Communications Letters, the Lead Guest Editor of the IEEE Journal on Selected Areas in Communications (JSAC), and a Guest Editor of the IEEE Wireless Communications and IEEE Vehicular Technology Magazine. He has served as the organizer and Co-Chair for several workshops, special sessions and tutorials in flagship IEEE conferences, including ICC, GLOBECOM, ICASSP, SPAWC, and MobiCom. He is a TPC Co-Chair of the 2nd-4th IEEE Joint Communication and Sensing (JC&S) Symposium, and a Track Co-Chair for the IEEE WCNC 2024. He is a member of the IMT-2030 (6G) ISAC Task Group. He was listed in the World's Top 2% Scientists by Stanford University for citation impact in 2021 and 2022. He was the recipient of the 2023 IEEE Communications Society Stephan O. Rice Prize, 2023 IEEE ICC Best Paper Award, 2023 IEEE/CIC ICCC 2023 Best Paper Award, 2022 First Prize of Science and Technology Progress of China Institue of Communications, 2021 IEEE Signal Processing Society Young Author Best Paper Award, 2019 Best Ph.D. Thesis Award of Chinese Institute of Electronics, 2018 EU Marie Curie Individual Fellowship, and has been named as an Exemplary Reviewer for IEEE TWC/TCOM/COMML for 5 times. |