Interference suppressor for a radio receiver

摘要: The RF input of a radio receiver is converted to IF including received signal, noise and interference fed an detector canceler suppressor. A fast Fourier transform (FFT) at the front end detects samples all interferences in frequency domain. domain are scaled for gain control detection above predetermined threshold. suppresses threshold level. phase rotated inverse obtain time replica which shifted replicas detected interferences. Such digital continuous analog interferences, back summed with original included signals, order cancel output