Yuchen Li (Y. Li) · Academic Homepage
Research themes
My research spans sensing hardware, array signal processing, and the interpretation of human motion. These three themes connect the systems I build with the questions they help investigate.
Research / 01
Radar measurement and analysis of cardiac activity, including vital signs, mechanical cardiograms, cardiac timing, and learning-based rhythm classification.
Bioelectromagnetics in Medicine, vol. 1, no. 1, 2026
A review of contactless cardiac monitoring with biomedical radar, from sensing architectures and mechanical cardiograms to cardiac timing and rhythm analysis. The article discusses the validation and physiological interpretation needed to connect radar measurements with clinical questions.
2026 IEEE MTT-S International Wireless Symposium (IWS), pp. 1-3, 2026
2026 IWS FLASH Best Paper Award · Second Prize
A mmWave radar approach to contactless cardiac activity monitoring, connecting arrhythmia detection with the estimation of systolic time intervals.
IEEE Transactions on Microwave Theory and Techniques, vol. 72, no. 10, pp. 6094-6106, 2024
A vital-sign monitoring framework that combines 4-D cardiac beamforming with heart-rate trace carving. It addresses the extraction and tracking of cardiac signals using an FMCW MIMO radar.
2025 Asia-Pacific Microwave Conference (APMC), pp. 1-3, 2025
A knowledge-fusion deep learning approach to classifying premature beats from mmWave radar measurements in clinical settings.
IEEE Transactions on Microwave Theory and Techniques, vol. 74, no. 4, pp. 3795-3806, 2026
A contactless heart-rate estimation method combining sparse, asymmetric range-domain beamforming with harmonic signal tracking.
Research / 02
FMCW MIMO radar architecture, sparse and reconfigurable arrays, beamforming, range–angle decoupling, and calibration for short-range motion sensing.
IEEE Transactions on Microwave Theory and Techniques, vol. 74, no. 4, pp. 3933-3944, 2026
A double L-shaped MIMO array for 4-D radar sensing, designed around subspace-based angular resolution. This work connects antenna-array geometry with the spatial discrimination required for short-range sensing.
IEEE Transactions on Microwave Theory and Techniques, vol. 74, no. 6, pp. 5791-5806, 2026
Cover Image of the Issue
A spatial resampling method for reducing range–angle coupling in a high-resolution 4-D MIMO FMCW radar system.
IEEE Transactions on Microwave Theory and Techniques, vol. 74, no. 1, pp. 421-434, 2026
A short-range K-band sparse MIMO radar system for multitarget microwave cardiogram sensing with 4-D digital beamforming.
IEEE Transactions on Microwave Theory and Techniques, vol. 73, no. 10, pp. 8310-8324, 2025
Research / 03
Radar-based gesture sensing, indoor trajectory tracking, and presence detection, with applications in human–computer interaction and ambient sensing.
IEEE Transactions on Microwave Theory and Techniques, vol. 70, no. 7, pp. 3652-3665, 2022
Featured Article of IEEE MTT-S Newsletter June 2022
A reconfigurable virtual-array approach to 4-D gesture sensing with a 60-GHz FMCW MIMO radar. The work explores spatial hand localization together with fine motion sensing.
CAAI International Conference on Artificial Intelligence (CICAI 2022), Lecture Notes in Computer Science, pp. 605-609, 2022
2023 IEEE/MTT-S International Microwave Symposium - IMS 2023, pp. 427-430, 2023
2024 IEEE 12th Asia-Pacific Conference on Antennas and Propagation (APCAP), pp. 1-2, 2024