A Digital Coherent Frequency Hopping Anti-jamming Receiver Based on IIR

Coherent frequency hopping receiver (CFHR) can improve the anti-jamming ability of wireless communication. Anti-jamming ability of CFHR is closely related to the design of anti-jamming filter. The anti-jamming digital CFHR implemented in the FPGA platform is more flexible, compared to the receiver down-conversion and filtered in RF analog front-end. FIR low-pass filter is usually used in anti-jamming filter field of digital CFHR. However, IIR filter and nonlinear compensation module can replace FIR filter in order to optimize the resource complexity. In this paper, we propose the simulation and implementation of the digital coherent frequency hopping receiver based on IIR and nonlinear compensation. Besides, BER performance of CFHR based on IIR is unchanged compared to FIR under different jamming conditions.