2 papers
eess.SP2025
On Improving PPG-Based Sleep Staging: A Pilot Study
Jiawei Wang, Yu Guan, Chen Chen +3
Sleep monitoring through accessible wearable technology is crucial to improving well-being in ubiquitous computing. Although photoplethysmography(PPG) sensors are widely adopted in…
eess.SP2019
Ranking power spectra: a proof of concept
Zhenning Mei, Xilin Yu, Chen Chen +1
Objective: To characterize the irregularity of the spectrum of a signal, spectral entropy is a widely adopted measure. However, such a metric is invariant under any permutation of…