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High data rate wireless communication system introduces the unavoidable inter symbol interference (ISI), for which orthogonal frequency division multiplexing (OFDM) gives a best solution by utilizing the property of orthogonality among the sub carriers. In addition, estimating the channel characteristics under non-linear time varying random channel environment, is always a tough task for a successful...
The pulse oximeter's photoplethysmographic (PPG) signals can be well utilized for extracting the vital respiratory activity, in addition to saturation and heart rate estimations, avoiding the usage of additional sensor for recording respiratory signal, in turn reducing the number of sensors connected to the patient's body for recording vital signals. In this paper, we present a robust algorithm called...
In high risk situations such as cardiac arrhythmias, ambulatory monitoring, stress tests, sleep disorder investigations and post-operative hypoxemia situations, monitoring of respiratory activity would be mandatory. Electrocardiogram (ECG), blood pressure (BP) and photoplethysmographic (PPG) signals can be used for extraction of respiratory activity, and will eventually eliminate the use of additional...
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