Multitime-frequency classifiers for noisy modulations

This communication presents two new classification algorithms based on Time Varying Higher Order Statistic (TVHOS). These two algorithms benefit from the advantageous localization properties provided by TVHOS4 for instantaneous frequency laws disrupted by a multiplicative noise. The classification scheme used is a bank of several normalized TVHOS4 correlators. Simulations illustrate successful performance of the classification algorithms for different situations and especially if the SNR is higher than −6 dB.