[Retracted] Edge-Enabled Heart Rate Estimation from Multisensor PPG Signals

Table 2

The three groups of PPG signals in detail.

Group nos.	Signal source	Number of signals	Sampling period (s)	Methods
1	Left wrist area	24	30	EeHRA-left^1
2	Right wrist area	24	30	EeHRA-right^2
3	Bilateral wrist areas	48	30	EeHRA-bilateral^3

¹EeHRA-left denotes that the EeHRA method uses the left PPG signals as the signal source. ²EeHRA-right denotes that the EeHRA method uses the right PPG signals as the signal source. ³EeHRA-bilateral denotes that the EeHRA method uses the bilateral PPG signals as the signal source.