Performance analysis of FFH-FDMA satellite communication system using partial processing Dehop-Rehop transponder (DRT) under jamming

  • Authors:

  • Junghwan Kim;Suil Kim;Mike Orra;Pooja Raorane

  • Affiliations:

  • IEECS Department, The University of Toledo, Toledo, Ohio;Agency for Defense Development, Daejeon, Korea;IEECS Department, The University of Toledo, Toledo, Ohio;IEECS Department, The University of Toledo, Toledo, Ohio

  • Venue:
  • MILCOM'09 Proceedings of the 28th IEEE conference on Military communications
  • Year:
  • 2009

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Abstract

This paper presents simulation results which illustrate the performance of a fast frequency hopped - frequency division multiple access (FFH-FDMA) satellite communication system using a partial processing Dehop-Rehop Transponder (DRT) under jamming. In the simulated system, convolutional coded symbols (using rates 1/2 or 1/4) are hopped with time diversity to enhance the anti-jamming (AJ) capacity. This study examines the combined effect of time diversity and channel coding under the influence of TWTA nonlinearity, jammer strength and up/down link channel noises on the end-to-end bit error rate (BER) of the DRT system. The simulated results show that under the considered jamming environments of partial band noise jamming (PBNJ) and band multi-tone jamming (BMTJ), excessive TWTA input back-off (IBOF) does not necessarily enhance the performance; rather, it greatly degrades the BER, particularly when channel noise is nonnegligible. It was also verified that under the same conditions, time diversity and convolutional coding must be carefully combined to avoid possible degradation in FH-FDMA satellite channel.