Dual-channel photoplethysmography synchronization using a Barker sequence.
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.
Zahedi
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Department of Electrical, Electronic and System Engineering, Faculty of Engineering, National University Malaysia (Universiti Kebangsaan Malaysia), 43600 Bangi, Selangor, Malaysia.
M Ali
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