Abstract

In this talk, I will present two research topics respectively in academia and industry. The first topic focuses on the establishment of a unified theory of communications and feedback control. We investigate a long-standing information theory problem – feedback capacity of Gaussian channels – and show that the information theory problem of finding capacity-achieving codes for feedback Gaussian channels coincides with an optimal control problem of finding stabilizing feedback controllers over Youla parameters. The convergence of the two fundamental theories brings up new opportunities to address hard problems in both fields. The second topic focuses on the unified design of 5G systems, which is envisioned to support diverse and challenging usage scenarios with respect to the current mobile network generations. In this talk, I will introduce the motivating use cases for 5G, discuss fundamental PHY/MAC design (e.g. numerology, frame structure, HARQ, etc.), and identify challenges and opportunities down the road.

Bio

Dr. Chong Li is Staff Research Engineer at Qualcomm R&D and Adjunct Professor at Columbia University. He received a Ph.D. degree from Iowa State University and a B.E degree from Harbin Institute of Technology, both in Electrical Engineering. Dr. Li holds 80+ U.S. patents (granted and pending) and serves as reviewer and is on the technical program committee for most prestigious international journals and conferences in communications and control societies. He was a Visiting Scholar at National Tsing Hua University (Taiwan) and Yale University. Dr. Li received MediaTek Inc. & Wu Ta You Scholar Award from MediaTek Inc, Rosenfeld International Scholarship and Research Excellent Award from Iowa State University. His research interest includes information theory, networked control and communications, machine learning and PHY/MAC design for advanced communication systems.

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