Is it better to use Signal Processing Cup 2015 or PhysioNet dataset for getting photoplethysomograph signal for motion artifact removal application ?
SPcup data provides 2-channel ppg with simultaneous ecg and acceleration data whereas physionet only provides single channel ppg.
PS links are provided for both datasets.
physionet data
https://physionet.org/cgi-bin/atm/ATM?database=mimic2wdb&tool=plot_waveforms
SP cup 2015 data
http://www.zhilinzhang.com/spcup2015/data.html