BPSK interference rejection in DS SS systems using IIR notch filter

The use of FIR filters in anti-jam and interference rejection of spread spectrum systems has been studied extensively. However, little work have been done for cases of IIR filters. This paper employs a simple second order IIR filter for interference suppression in a direct sequence spread spectrum system which is overlaid on a narrow-band BPSK system. The bit error rate expression of such a DS SS system is derived and numerical results are presented.link_to_subscribed_fulltex