sistema sotovoy svyazi standarta gsm 900
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prakticheskaya rabota №1 tema: sistema sotovoy svyazi standarta gsm 900 plan vvedenie 2 1. sistema gsm 5 2. gsm 900 8 3. printsip povtornogo ispolzovaniya chastot 10 zaklyuchenie 12 literatura 13 vvedenie sistema sotovoy svyazi standarta gsm 900 yavlyaetsya odnoy iz pervix i naibolee rasprostranennix texnologiy mobilnoy svyazi vtorogo pokoleniya (2g), razrabotannoy dlya obespecheniya mobilnoy telefonnoy svyazi. eto standart, kotoriy bil prinyat v nachale 1990-x godov i imeet znachitelnoe vliyanie na razvitie tsifrovoy mobilnoy svyazi. nije privedeni osnovnie xarakteristiki i printsipi raboti gsm 900. osnovnie xarakteristiki gsm 900 1. chastotniy diapazon: - standart gsm 900 rabotaet v diapazone chastot 890-915 mgts dlya uplink (ot mobilnogo telefona k bazovoy stantsii) i 935-960 mgts dlya ...
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