Diversity Reception in Radiocommunication Links

نویسنده

  • Róbert Kovács
چکیده

The increased throughput capacity needs in wireless audio video and data transmission networks demanded by the information society of the 21 st century are satisfied by commonly used, enhanced, digital high bitrate radio transmission technologies. Versatility in conditions of the surrounding enviroment (e.g. physical nature of atmosphere and ionosphere, mobile communications, urban environment, digital transmissions) implies continuous wide range fluctuation in radio channel parameters. To eliminate these negative effects there are some advanced technologies supporting our radio devices in the background. The purpose of this article is to present the fundamentals of one of these technologies namely the not generally known, but everyday used diversity reception technique and to provide a systematic overview of the variety of its application branches. A 21. század információs társadalmának megnövekedett vezeték nélküli hangképés adatátviteli igényeit általánosan használt, fejlett, digitális, nagysebességű rádiós technológiák biztosítják. A környezeti feltételek (pl. atmoszféra, ionoszféra fizikai tulajdonságai, mozgás közbeni kommunikáció, nagyvárosi környezet, digitális jelátvitel) a rádiócsatorna paramétereinek folyamatos, extrém értékek közötti változását eredményezi. A negatív hatások kiküszöbölésére rádiós eszközeinket fejlett technológiák támogatják a háttérben. A cikk ezek egyikének, a köztudatban kevésbé ismert, ám mindennap használatos diverziti vételtechnika alapjainak bemutatását, szerteágazó fajtáinak egységes rendszerbe foglalását célozza meg.

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تاریخ انتشار 2013