A Comparative Study of Signal Representations Methods and Deep Learning Architectures for PPG-Based Cuffless Blood Pressure Estimation

Han Zhang, Xudong Hu, Xizhuang Zhang, Zhencheng Chen, Yongbo Liang, Gang Wang (GUET, XJTU, UESTC)

Sensors· 2026
PPGDOI

Summary

Seven 1D→2D transforms × several CNN variants on the UCI BP database. Best: CWT, errors reported as 3.80 ± 5.02 (SBP) and 1.65 ± 2.70 mmHg (DBP). Real-world check on 26 people vs an Omron cuff: R = 0.96 (SBP), 0.74 (DBP).

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Updated: Oct 11, 2026