Title :
Dual-channel photoplethysmography synchronization using a Barker sequence
Author :
Zahedi, E. ; Ali, M.A.M.
Author_Institution :
Dept. of Electr., Electron. & Syst. Eng., Nat. Univ. Malaysia, Selangor
Abstract :
A Barker sequence is employed for the synchronization of two photoplethysmogram (PPG) channels. The correctness of this technique is demonstrated by recording a PPG signal, injecting a Barker sequence at the start of this trace and producing a delayed version of it. After preprocessing, cross-correlation techniques are utilized for accurate time alignment of the two traces. The algorithm can correct for any time misalignment as long as the synchronization sequence appears on both channels
Keywords :
bio-optics; medical signal processing; plethysmography; synchronisation; Barker sequence; cross-correlation techniques; dual-channel photoplethysmography synchronization; photoplethysmogram; signal preprocessing; time alignment; Autocorrelation; Data acquisition; Delay effects; Manufacturing; Probes; Propagation delay; Sampling methods; Signal design; Signal resolution; Systems engineering and theory;
Conference_Titel :
Engineering in Medicine and Biology Society, 2005. IEEE-EMBS 2005. 27th Annual International Conference of the
Conference_Location :
Shanghai
Print_ISBN :
0-7803-8741-4
DOI :
10.1109/IEMBS.2005.1616835
