An analytical study is presented for the performance of fast frequency-hopping (FFH) self-normalized orthogonal M-ary frequency-shift-keyed (MFSK) noncoherent receivers in the presence of multitone jamming. The multiple equal-power jamming tones are assumed to correspond to some of the possible FFH/M-ary orthogonal signaling tones. It has been shown that a higher diversity order (the number of hops per symbol) improves significantly the worst case performance of the self-normalized receivers against multitone jamming and reduces the fading effect of jamming tones. There exists an optimum value of modulation order (M) that maximizes the worst case performance of the self-normalized MFSK receiver.
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