Performance comparison of differential frequency hopping and conventional frequency hopping against partial-band jamming
Yichao Zhu · Ship Science and Technology · 2011
Based on the theoretical bit error rate(BER)results of differential frequency hopping(DFH)against partial-band jamming,this paper compares the union-chernoff BER bounds of DFH and conventional fast frequency hopping(FFH)against partial-band jamming.In comparison,Viterbi algorithm is used by DFH and weighted energy metric is used by both DFH and FFH.Furthermore,equal spectrum efficiency is assumed for both systems.Comparison results show that DFH has significantly better anti-jamming performance compared with FFH.If DFH transmits 1 bit per hop,FFH transmits 1 bit per symbol,and BER is larger than 10-6,DFH requires 6 dB less signal-to-jamming ratio(SJR)than FFH to achieve the same BER.