Time-Varying Single Tone Jamming Suppression Based on Frequency Interference Cancellation

Abstract

The goal of this paper is to suppress time-varying single tone jamming (STJ) in the CDMA system by using the frequency interference cancellation method. We consider the practical scenario where STJ signal experiences time-varying fading channel. In this approach, the parameters (i.e. frequency, amplitude and phase) of the time-varying STJ are estimated in frequency domain, and then it is reconstructed and subtracted from the raw signals. The theoretical BER (bit error rate) expression is analyzed to assess the performance of the method, and computer simulations are executed. Simulation results demonstrate the effectiveness of the method in mitigating time-varying STJ and approaching the interferencefree performance limit over practical ranges of STJ power levels and mobility levels.