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Modeling of the Land Mobile Satellite Channel considering the Terminal's Driving Direction

 
: Rieche, Marie; Ihlow, Alexander; Arndt, Daniel; Pérez-Fontán, Fernando; Galdo, Giovanni del

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International journal of antennas and propagation : IJAP (2014), Art. 372124, 22 pp.
ISSN: 1687-5869
ISSN: 1687-5877
English
Journal Article, Electronic Publication
Fraunhofer IIS ()
simulation; Satellitenkommunikation; S-Band (2000-4000 MHz); MATLAB; L-/S-Band; Kanalmodelle; Frequenzbereich; digitales Rundfunksystem; Ausbreitungsmodell

Abstract
A precise characterization of the Land Mobile Satellite (LMS) channel, i.e., the channel between a satellite and a mobile terminal, is of crucial importance while designing a satellite-based communication system. State-of-the art statistical LMS channel models offer the advantage of requiring only a few input parameters, which include the environment type and the elevation angle of the satellite. However, the azimuth angle relative to the driving direction of the mobile terminal is usually ignored, as its proper modeling requires either an extensive measurement campaign or significant effort from the user, as a precise geometrical description of the scenario is required. In this contribution we show that the impact of the driving direction on the channel statistics is not negligible and requires to be modeled explicitly. Moreover, we propose a statistical LMS channel model whose parameters are obtained via an image-based state estimation method. The image-based method is verified by a comparison with measured radio frequency signal levels. The proposed method allows to obtain a complete statistical description of the channel for arbitrary elevation and azimuth angles.

: http://publica.fraunhofer.de/documents/N-324851.html