Identification and Simulation of Interference Cancellation System Self Adaptive Filtering

Interference cancellation technology is an important way to solve cosite interference. For the identification problem of interference cancellation, this paper designs a type of interference signal gathering system to simulate various kinds of duty cycle pulse modulated signal waveform with signal source, and to measure the anti-interference capability with packet BER. It also gathers the pulse-free modulated and pulse modulated signal waveform, conducts fitting link characteristics with linear FIR filter and launches interference cancellation simulation analysis by applying self adaptive filtering method. The simulation result of cancellation ratio is over 20dB.