Abstract:
A hybrid slow frequency hopping/direct sequence spread spectrum multiple access
(hybrid SFH/DS SSMA) are attractive because they can combine the advantages of the
pure SH and the pure DS, while avoiding some of their disadvantages. The paper
presents the BER performance analysis of the hybrid SFH/DS SSMA operating through
fading channel. Moreover, such hybrid system is subjected to the effect of partial band
noise or jamming. The performance is discussed assuming noncoherent hybrid SFH/DS
system, which employs independent random direct sequences and random memoryless
frequency hopping patterns. The system is operating through Rician and Rayleigh
fading channel, and the system is employing frequency shift keying FSK modulation
technique. A closed form expression for the hybrid system BER is derived for the
system under consideration. The performance measures including BER against signal to
noise ratio SNR, and jamming to signal ratio JSR are presented and plotted for the
system under consideration.