Improved characterization of HRV signals based on instantaneous frequency features estimated from quadratic timefrequency distributions with data-adapted kernels
Improved quadratic TFDs with lag-independent kernels to characterize HRV signals. Instantaneous frequency based HRV features for the detection of perinatal hypoxia. The proposed TFD can enhance the ability of resulted features for hypoxia detection.
instantaneous frequency timefrequency distribution lag-independent kernel heart rate variability perinatal hypoxia detection