Italsat, an advanced on board processing satellite communication system

Marconicchio, F.; Morelli, Gianluigi; Valdoni, F.

doi:10.2514/6.1992-1921

Cited by 10 publications

(2 citation statements)

References 1 publication

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“…A synchronous baseband space-switch matrix provided the interspot connectivity, with TDM in the downlink. A transparent Ka band payload with Italian global coverage and a payload for propagation experiments over Europe at 20-40-50 GHz were also installed on ITALSAT-F1, which was successfully launched in January 1991 [8]. The ITALSAT system was the first operational regenerative Ka band system integrated with the terrestrial networks.…”

Section: Brief History Of the Ka Bandmentioning

confidence: 99%

Services, technologies, and systems at Ka band and beyond-a survey

Gargione

Iida²,

Valdoni

et al. 1999

IEEE J. Select. Areas Commun.

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Abstract-This paper discusses system and technology aspects crucial to the development of satellite communications at Ka band (20-30 GHz) and beyond. It surveys the evolution of Ka band geostationary Earth orbit (GEO) satellite communications until the present stage of development of systems for direct-to-user (DTU) provision of interactive multimedia services worldwide. Then it discusses the attenuation problem and main technical issues of this new technology. Finally, it provides a view on experiments and technological developments at extremely highfrequency (EHF) bands.

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Section: Brief History Of the Ka Bandmentioning

confidence: 99%

Services, technologies, and systems at Ka band and beyond-a survey

Gargione

Iida²,

Valdoni

et al. 1999

IEEE J. Select. Areas Commun.

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“…In particular, the Ka-band has been first of all explored [2,3] and then successfully utilized in the two well-known ITALSAT [4] and ACTS [5] systems.…”

Section: Introductionmentioning

confidence: 99%

Large‐scale site diversity for satellite communication networks

Luglio

Mancini

Riva

et al. 2002

Int. J. Satell. Commun.

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SUMMARYThe utilization of high frequencies, such as Ka-band and beyond, necessary to avoid the highly congested lower satellite frequencies and to get larger bandwidth availability is considered for many developing satellite systems.The new satellite low-margin systems in Ka-band will need to be designed using fade countermeasures to counteract rain attenuation. One of these techniques foresees the possibility of switching the communication link among different Earth stations spread on a very large territory to reduce the system outage time to the joint outage time of all the stations.The design of such systems depends on the probability that the Earth stations simultaneously exceed their margins.In this paper, a well-assessed model is utilized for the prediction of joint statistics of rain attenuation in multiple locations, using Monte Carlo simulation. The model is based on a pair of multi-variate normal processes whose parameters are related to those characterizing the single-location statistics and whose covariance matrices are assumed to depend only on the distances between locations.The main results concerning both the probability and margin improvement will be presented and discussed.

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An advanced satellite system to provide interactive multimedia mobile services

Losquadro

Luglio

Vatalaro

et al. 1997

Trans Emerging Tel Tech

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Abstract. Provision of wideband services up to the final user anywhere is a challenging task for terrestrial technologies unless the sateliite is included as an essential system component. This objective is even more difficult to be met if at least a limited degree of user interactivity and mobility is required. Satellite multimedia applications will require wide bandwidths, high degree of flexibility on-board and intelligence at terminal level. The combined use of Ka band (20 -30 GHz) and EHF (in the range 40 -45 GHz) can extend interactive multimedia and personal services to ubiquitous and mobile users. This paper discusses the main interactive multimedia services and applications that may be provided via satellite. Particularly, it describes a new project, the "SECOMS project", that is under way in the framework of a programme of the European Union. The paper provides some indications on the main SECOMS assumptions and requirements, and system design elements.

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Italsat, an advanced on board processing satellite communication system

Cited by 10 publications

References 1 publication

Services, technologies, and systems at Ka band and beyond-a survey

Services, technologies, and systems at Ka band and beyond-a survey

Large‐scale site diversity for satellite communication networks

An advanced satellite system to provide interactive multimedia mobile services

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