A Novel Fuzzy Filtering Method to Faint Harmonic Signals in UWB System

This paper discusses that fuzzy theory is applied to retrieve useful signal from strong jamming surroundings, it also addresses the feasibility of retrieving disturbed useful signal by using fuzzy filter. A new fuzzy filtering method is proposed for submersed useful harmonic signal under the background of powerful noises in this paper, faint target signal can be retrieved through this kind of new filter. Under the simulation environment, firstly, correlation-evenness way is utilized to eliminate the stochastic noise in the mixed signals; To the colored noise, self adaptive neural fuzzy elation system (ANFIS) approach is used to carry through fuzzy filtering. Study shows, original faint target signals still can be retrieved, even though in the condition of lower signal-to-noise ratio (SNR). Simulation examples have shown its effectiveness. A new way of retrieving useful signal in ultra wide band (UWB) wireless communication system is got.