Basic Principle of Cellular Radio Communication System

Written by amy rodriguez
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Basic Principle of Cellular Radio Communication System
There is a science behind how cell phones get a signal. (cell image by Christian De Grandmaison from

Cell phones have become a normal accessory in everyday life, providing assurance of communication wherever a person may be in his daily rounds. The cellular radio communication system is what keeps that communication possible.


The cellular radio transmission system is comprised of numerous cell sites, or antennas, which are installed to serve the surrounding mobile community. Depending on the amount of cellular traffic, multiple cell sites may be necessary.


When a user turns on his mobile phone, the local cell site reacts by allowing the user onto the nearest antenna for the best signal. As that person moves away from the cell site, a hand off request is sent from the waning cell antenna to a site now closer to the user, subsequently transferring the user to that site seamlessly for better reception.


Each cell site runs on an 800 or 1900 megahertz signal frequency from its transceiver, as mandated by the FCC, or Federal Communications Commission.

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