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Electronics & Communication Engineering Journal

Issue 2 • Date Apr 1999

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Displaying Results 1 - 3 of 3
  • Smart antennas for mobile communication systems: benefits and challenges

    Publication Year: 1999, Page(s):84 - 94
    Cited by:  Papers (57)  |  Patents (39)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1084 KB)

    Spatial filtering using adaptive or smart antennas has emerged as a promising technique to improve the performance of cellular mobile systems. This paper presents an overview of smart antennas in terms of key characteristics, options, challenges and benefits, in the context of current, but also with a view towards future, generation personal communication systems View full abstract»

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  • Emerging technologies for software radio

    Publication Year: 1999, Page(s):69 - 83
    Cited by:  Papers (11)  |  Patents (16)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (2172 KB)

    Multimode, multiband transceivers were once seen as a desirable but unachievable goal, particularly when considering small, battery-powered terminals. There are, however, significant market-pulls requiring just such a device and dual-mode systems (albeit with largely separate hardware) are now a reality. The next revolution will be the production of so-called flexible architecture terminals, in wh... View full abstract»

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  • Short-haul communications using NVIS HF radio

    Publication Year: 1999, Page(s):95 - 104
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (996 KB)

    In geographical regions poorly served by land-lines or line-of-sight repeaters, high-frequency (HF) radio can still provide a low-cost alternative to satellite links. In particular, the near vertical incidence sky-wave (NVIS) propagation mode gives omnidirectional coverage from a central site; 300 km ranges are possible and the technique has an inherent ability to fill in `blind spots' lying in hi... View full abstract»

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