International Journal of Satellite Communications and Networking

Cover image for Vol. 30 Issue 1

January/February 2012

Volume 30, Issue 1

Pages 1–38

  1. Research Articles

    1. Top of page
    2. Research Articles
    1. Railway satellite channel at Ku band and above: Composite dynamic modeling for the design of fade mitigation techniques (pages 1–17)

      Pantelis-Daniel Arapoglou, Konstantinos P. Liolis and Athanasios D. Panagopoulos

      Article first published online: 22 DEC 2011 | DOI: 10.1002/sat.991

      Thumbnail image of graphical abstract

      The present paper takes a comprehensive view of the railway satellite channel by introducing a novel stochastic dynamic model of rain fading in mobile satellite systems on top of the diffraction because of power arches. It is shown that this propagation tool may provide significant aid in mobile satellite system simulations and during the design of fade mitigation techniques (FMTs). The tool enables the generation of fade events, fade duration statistics, rain attenuation power spectrum and predicting the necessary FMT control loop margin.

    2. Time series predictor of Ku band rain attenuation over an Earth–space path at a tropical location (pages 19–28)

      Dalia Das and Animesh Maitra

      Article first published online: 22 DEC 2011 | DOI: 10.1002/sat.992

      Thumbnail image of graphical abstract

      A channel model is proposed to predict the time series of Ku band rain attenuation during a rain event at a tropical location. The model is based on considering the Gaussian distribution of the conditional occurrence of rain attenuation with a particular value of the attenuation occurring before. The channel model has tested well giving the predicted attenuation that agrees with the measured value with a mean error within 15% higher than 1 dB.

    3. A simple and efficient authentication scheme for mobile satellite communication systems (pages 29–38)

      Cheng-Chi Lee, Chun-Ta Li and Rui-Xiang Chang

      Article first published online: 22 DEC 2011 | DOI: 10.1002/sat.993

      Thumbnail image of graphical abstract

      The authors proposed a simple and efficient authentication scheme for mobile satellite communication systems. The proposed scheme can achieve some security requirements and functionality requirements. The proposed scheme is only based on hash functions and exclusive-OR operations. Compared with other schemes, the proposed scheme has a lower computation cost.

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