The main features of the Personal Communications System (PCS) are outlined. The PCS is composed of the following: a constellation of Low Earth Orbiting (LEO) satellites; and a ground segment made of a variety of user terminals, the gateway stations, the network management, and satellite control centers. A general overview of the system is provided, together with the definition of a satellite constellation suitable for PCS services. The adoption of LEO satellites sensibly reduces the power requirement of user terminals and allows users to share the system capacity among a large number of spacecraft. Results of a comparative analysis of access modes is presented together with the expected spacecraft complexity, which derives by the alternative adoption of two types of onboard antennas, with 7 and 19 spot beams. An overall dimensioning of the payload and general outline of the spacecraft are given.


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    Title :

    Personal Communications Satellite Service System


    Contributors:
    L. Caporicci (author) / S. Digirolamo (author) / M. Luongo (author) / C. Soddu (author)

    Publication date :

    1992


    Size :

    6 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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