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Electronics & Communication Engineering Journal

Issue 6 • Dec 1994

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Displaying Results 1 - 5 of 5
  • Satellites in UMTS and B-ISDN: status of activities and perspectives

    Publication Year: 1994, Page(s):297 - 303
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (480 KB)

    Satellites are no longer seen as an alternative to a terrestrial mobile telecommunications system or the (optical-fibre-based) integrated broadband communications network. Instead they are now being considered as one of the components of the Universal Mobile Telecommunications System being developed within the European Union's RACE Programme for the next century and as a component of the broadband... View full abstract»

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  • Self-timed logic circuits

    Publication Year: 1994, Page(s):261 - 270
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (592 KB)

    Self-timed and asynchronous design techniques are currently proposed as a vehicle for pushing digital integrated circuits to higher levels of density and performance. The arguments for and against the adoption of these techniques are presented with illustrations from practical development projects. Some of the key principles behind self-timed operation are reviewed. Design tools to enable complex ... View full abstract»

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  • Pointing, acquisition and tracking for optical space communications

    Publication Year: 1994, Page(s):271 - 280
    Cited by:  Papers (12)  |  Patents (7)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (616 KB)

    Free-space links between satellites provide a means of introducing increased connectivity into a satellite system. This can result in enhanced traffic capacity and extended coverage for telecommunication systems and real-time relay of instrument data to the ground for Earth observation missions. Optical links offer the potential advantages over microwave links of lower mass and power and reduced s... View full abstract»

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  • Microwave scatterometry in support of space-borne scientific missions

    Publication Year: 1994, Page(s):281 - 288
    Cited by:  Patents (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (556 KB)

    The interpretation of satellite radar observations of the Earth's surface requires models to link the observations to physical processes. These models require validation through surface measurements. This paper describes a mobile radar scatterometer designed to complement the vertical incidence measurements of satellite radar altimeters. The instrument has been successfully deployed in Antarctica ... View full abstract»

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  • HIPERLAN: the high performance radio local area network standard

    Publication Year: 1994, Page(s):289 - 296
    Cited by:  Papers (23)  |  Patents (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (540 KB)

    The high performance radio local area network (HIPERLAN) standard is currently being developed by the European Telecommunications Standards Institute (ETSI). As well as providing a wired LAN substitute, with a target bit rate of 20 Mbit/s, the standard will provide for the creation of ad hoc networks, communication with mobile users, and access to interactive multimedia services. Radio spectrum ha... View full abstract»

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