Performance analysis of an FFH/BFSK self-normalising receiver under multitone jamming

Analytical expressions for bit-error probability are derived for a fast frequency-hopping binary frequency-shift-keying (FFH/BFSK) spread-spectrum (SS) communication system based on Taylor-series expansion. The FFH system employs a soft-decision self-normalising receiver against the worst-case multitone jamming (MTJ) and additive white Gaussian noise (AWGN). The authors´ analysis, validated by the simulation results, shows that the band MTJ is generally more harmful than the corresponding independent MTJ. Unlike the soft-decision linear-combining receiver, the worst-case partial-band jamming (PBJ) causes slightly poorer bit-error-rate (BER) performance than the corresponding worst-case band MTJ for the self-normalising receiver with diversity. The BER performance of the self-normalising receiver is shown to be significantly better than that of the soft-decision linear-combining receiver under the conditions of the worst-case band MTJ and AWGN