fundamental for cellular system
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Transcript of fundamental for cellular system
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Prepared by,
Girnari Niraj B.
Presentation At
Station e
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What is cell?
What is Cellular Phone?
What is Cellular System?
What happens when a person place a call?
Architecture of cellular system.
Evolution and future of cell phone.
Types of Cellular System.
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Cells are base stations transmitting over small geographic areas that are represented as hexagons. Each cell size varies depending on the landscape.
Each cell is typically sized at about 10 square miles(26 square kilometers).
Each cell has a base stationthat consists of a tower and a small building containing the radio equipment.
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A Cellular Phone is the combination of two great
technologies radio and telephone.
A Cellular Phone is basically a two-way Walkie-talkie that
acts like a telephone. With a Walkie-talkie, you can either
talk or listen; with a cell phone, you can talk and listen at
the same time.
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In the cellular phone system, the city is divided into smaller sections, or cells. Each cell contains its own antenna and uses only a subset of all the channels. Each antenna is lower in height and emits a much weaker signal so that the same subset of channels can be used in a cell somewhere else within the city. AS the entire system is divided into group of cells it is called “Cellular System”.
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ANALOG SYSTEM
AMPS
EAMPS
NAMPS
TACS
DIGITALSYSTEM
TDMA
E-TDMA
FWA
PCS
GSM
CDMA
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