Dear IEEE members,

On Thursday, April 18, 2024, from 10:00 to 11:30 (CET), there will be an online IEEE YP APS ambassador talk by Prof. Xuesong Cai from Lund University entitled "High Resolution Parameter Estimation for Radio Channels."  

The meeting link, abstract, and biography can be found below.

Virtual link for meeting: 

https://tudelft.zoom.us/j/96751471075?pwd=REZCRkp5NmF5S2Zjb3VWQWltUWhzZz09

MeetingID: 96751471075
Passcode: 143820

Abstract: The characteristics of the propagation channel fundamentally limit the design and performance upper limits of wireless systems. A deep understanding of wireless channels is the cornerstone for designing, optimizing, and evaluating wireless communication systems and various applications. Propagation research involves measuring wireless channels (channel sounding), extracting propagation path parameters from the measurement data (channel parameter estimation), and building accurate mathematical models (channel characterization and modeling).

This presentation will focus on the problem of channel parameter estimation, specifically on how to obtain high-resolution information such as multipath delay, angle, Doppler frequency, complex amplitude (power), and polarization characteristics from measurement data. I will begin with basic estimation theory and progress step by step to understand the basic principles of the expectation maximization (EM) algorithm. Then I will discuss the complete signal model of wireless channels and how the EM algorithm is applied to wireless channel estimation, specifically involving the currently widely used variant algorithms, SAGE, RiMAX, etc. Finally, the recently proposed low-complexity and high-resolution algorithm for millimeter-wave channels with large-scale antenna array configuration will be shown.

Biography: Xuesong Cai (Senior Member, IEEE) received the B.S. degree and the Ph.D. degree (with distinction) from Tongji University, Shanghai, China, in 2013 and 2018, respectively. In 2015, he conducted a three-month internship with Huawei Technologies, Shanghai, China. He was also a Visiting Scholar with Universidad Politécnica de Madrid, Madrid, Spain in 2016. From 2018-2022, he conducted several postdoctoral stays at Aalborg University and Nokia Bell Labs, Denmark, and Lund University, Sweden. He is currently an Assistant Professor in Communications Engineering and a Marie Skłodowska-Curie Fellow at Lund University, closely cooperating with Ericsson and Sony. His research interests include radio propagation, high-resolution parameter estimation, over-the-air testing, resource optimization, and radio-based localization for 5G/B5G wireless systems.

Dr. Cai was a recipient of the China National Scholarship (the highest honor for Ph.D. Candidates) in 2016, the Outstanding Doctorate Graduate awarded by the Shanghai Municipal Education Commission in 2018, the Marie Skłodowska-Curie Actions (MSCA) “Seal of Excellence” in 2019, the EU MSCA Fellowship (ranking top 1.2%, overall success rate 14%) and the Starting Grant (success rate 12%) funded by the Swedish Research Council in 2022. He was also selected by the “ZTE Blue Sword-Future Leaders Plan” in 2018 and the “Huawei Genius Youth Program” in 2021. He is an AP-S Young Professional Ambassador for 2024. He is also an Associate Editor of IEEE Transactions on Vehicular Technology, IET Communications, and Wireless Communications and Mobile Computing.

On behalf of the IEEE Benelux MTT/AP Joint Chapter YP co-chairs,
Pallab Kr Gogoi and Kamil Yavuz Kapusuz