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4 November 1993 Use of 20/30 GHz frequencies for broadband satellite communication systems
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Proceedings Volume 1976, High-Definition Video; (1993)
Event: Video Communications and Fiber Optic Networks, 1993, Berlin, Germany
This paper provides a review of possible applications of the exploitation of the 20/30 GHz frequency bands in satellite communication systems. The availability of new higher frequency bands extends to the satellite networks the concept of 'broadband communications', providing new possibilities of integration with the wideband terrestrial networks. Three main applications are here analyzed: (a) the multipoint videoconference; (b) the LAN-to-LAN interconnections; (c) the HDTV service. The work is based on the utilization of the 20/30 GHz ITALSAT satellite, that was designed and developed by Alenia Spazio in the frame of a national program. ITALSAT is in orbit since January '91, providing two different coverages of the Italian territory. In particular, the ITALSAT satellite is considered here as baseline for the system design of the applications analyzed in the paper. The important problem related to the wave propagation atmospheric effects at these frequency bands is also addressed. The heavy fading experimented at Ka-band can have particular impact on system design load. To this purpose, a fading countermeasure technique is selected and analyzed based on an adaptive Up Path Power Control (UPPC) concept.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
P. Capodieci, F. Martinino, M. Melani, Ovivio Michelangeli, E. Salvatori, Saverio Cacopardi, and Gianluca Reali "Use of 20/30 GHz frequencies for broadband satellite communication systems", Proc. SPIE 1976, High-Definition Video, (4 November 1993);

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