Performance of satellite communication system with FH-MFSK under various jamming environments

Military satellite communication can be operated with various levels of satellite onboard processing. The BER performances of the bent pipe transponder (BPT), dehop only transponder (DOT) and dehop and rehop transponder (DRT) systems with FH-MFSK modulation are compared in the presence of full-band and partial-band noise jamming and multi-tone jamming. Further, this paper investigates the BER by changing the data rates, spreading bandwidth and jamming EIRP. The numerical results show that DRT outperforms BPT and DOT and that DOT is less sensitive to uplink jamming EIRP under the full-band jamming strategy than DRT. In the partial-band jamming case, the worst case /spl rho/ (the ratio of spreading bandwidth to jamming bandwidth) is also changed according to the variation of the data rate, and the BER of DRT is more sensitive to different /spl rho/ values than DOT. Among various jamming strategies, the performance in MTJ is shown to be the worst.