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picture1_Topology Ppt 77570 | Chapter 5 Second Editioppt


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File: Topology Ppt 77570 | Chapter 5 Second Editioppt
introduction wireless communications system in which electromagnetic waves carry a signal through atmospheric space rather than along a wire most systems use radio frequency rf which ranges from 3 khz ...

icon picture PPT Filetype Power Point PPT | Posted on 03 Sep 2022 | 4 years ago
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...Introduction wireless communications system in which electromagnetic waves carry a signal through atmospheric space rather than along wire most systems use radio frequency rf ranges from khz to ghz or infrared ir thz products do not require any form of licensing by the fcc timeline major developments mobile telephone mts introduced simplex one way transmission and manual operation improved imts using mhz band advanced phone service amps first employ cellular concept topology network series overlapping hexagonal cells honeycomb pattern components base station transmitter receiver controller antenna cell s span coverage switching center contains all control elements connect caller even as moves another personal pcs is also called networks pcn goal provide integrated voice data video three categories broadband cordless handsets narrowband enhanced paging functions unlicensed allows short distance...

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