Abstract
SummarySince April 2011, ONERA has been operating in Toulouse, France, a beacon receiver able to receive the 20.199 GHz beacon signal of ASTRA 3B. From June 2013 to December 2013, ONERA and CNES successively deployed in the South of France four more beacon receivers in order to characterize the space‐time behaviour of the propagation channel at Ka‐band. This Site Diversity configuration is of great interest for the development of future high data rate satellite services as it efficiently mitigates severe tropospheric propagation impairments, in particular rain attenuation which is the major issue. The ONERA‐CNES Ka‐band site diversity experiment consists of three beacon receivers deployed in the area of Toulouse with site separation between 16 and 26 km, and two additional beacon receivers at 140 km and 300 km from Toulouse. This paper aims at providing a complete description of the experimental set‐up and the statistical results of the campaign from July 2013 to December 2014. The Complementary Cumulative Distribution Functions (CCDF) of rain attenuation on each site and the Joint Distributions for several pairs of radio links are illustrated. Some comparisons of the measured Diversity Gain with two state‐of‐the‐art prediction models are also presented. Copyright © 2016 John Wiley & Sons, Ltd.
Highlights
More and more satellite communication systems are being deployed at high frequency bands, especially at Ka-band, to get higher bandwidth in order to offer high data rate multimedia services
In order to characterize the space-time behaviour of the propagation channel at Ka-band, CNES and ONERA have decided to carry out a new Site Diversity propagation experiment to collect propagation data at Ka-band from a network of five beacon receivers deployed in the South of France
From July 2013 to December 2014, ONERA and CNES conducted a 5 sites diversity experiment based on ASTRA 3B beacon signal
Summary
More and more satellite communication systems are being deployed at high frequency bands, especially at Ka-band, to get higher bandwidth in order to offer high data rate multimedia services. Future Satcom systems with feeder links operating at Q/V-band [3] are currently studied to benefit from larger bandwidth and to reach Tb/s capacity [4]. The use of such high frequency bands (Ka- and Q/V-bands) is limited by the influence of the propagation channel through the troposphere whose impact can be reduced by the use of Fade Mitigation Techniques (FMT) [5]. The implementation of gateways in Site Diversity configuration appears as a very efficient mitigation technique to counteract severe propagation impairments on the feeder links [5,6,7], in particular rain attenuation which is the major issue. Site Diversity consists in separating the ground terminals by distances ranging from several to tens of kilometres to benefit from the spatial decorrelation of the rain cells. At Q/V bands, it is probably not always realistic to consider
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