Patent ID: 8238497

Claim:
A device for reducing interferences in a received communication signal, comprising: an adaptive filter using a self-reference signal, for removing coherent and stable interference signals from the received communication signal; a detection module for detecting the presence of a target signal in a filter signal received from the adaptive filter; a demodulation module for demodulating the received communication signal when the target signal is detected by the detection module; a control module for controlling the adaptive filter so that the target signal is not sensed and removed by the adaptive filter; a noise-classifying device for detecting interference signals in the received communication signal, including incoherent interference signals, and determining a noise classification of the detected interference signals, the noise-classifying device receiving the received communication signal and the filter signal; and a switching module for selecting a demodulation module input signal from the received communication signal and the filter signal on the basis of a determination of the noise-classifying device and a value detected for the absence or presence of the target signal; wherein the demodulation module can adapt in accordance with the determination of the noise-classifying device; wherein the noise-classifying device is composed so as to detect intermittent interference signals, and to supply, when an intermittent interference signal is detected, as output over a limited continuation time a forced signal so as not to halt convergence of the adaptive filter; wherein the received communication signal exhibits the shape of a digital sample; and the noise-classifying device compares a smoothed power signal of the received communication signal and a predetermined noise-erasing threshold value, computes the signal difference between two consecutive digital samples and detects the periodicity of the peaks of the intermittent interference signals.