Performance analysis of an FFH/BFSK product-combining receiver under multitone jamming

The performance of a fast frequency-hopped binary frequency-shift keying (F FH/BFSK) spread-spectrum (SS) communication system is studied in this paper . The FFH system employs a product-combining receiver against the worst cas e multitone jamming (MTJ) and additive white Gaussian noise (AWGN). The com pact characteristic functions of the natural logarithm of the product-combi ner outputs are obtained based on the Taylor series expansion. The characte ristic functions are then used to derive the bit error rate (BER) expressio ns that are applicable to higher diversity levels. Our analysis, validated by the simulation results, shows that the band MTJ is generally more harmfu l than the corresponding independent MTJ. The BER performance of the produc t-combining receiver is shown to possess good MTJ rejection capability comp ared to that of the soft-decision linear-combining receiver, especially und er both moderate and strong MTJ power conditions.