# Analysis of photoplethysmogram signal to estimate heart rate during physical activity using fractional fourier transform – A sampling frequency independent and reference signal-less method

> Research article (Computer Methods and Programs in Biomedicine, 2022) · cited 15× · AI/ML

**Wikidata**: [openalex:W4310554285](https://www.wikidata.org/wiki/openalex:W4310554285)  
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