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Cellular radio is a technique that was developed to increase  the capacity available for mobile radio telephone service -prc+G,qyp  
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Each cell is allocated a band of frequencies and is served by the base station, consisting of transmitter, receiver and control unit. "7z1V{ ;Y  
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Each cell has a base transceiver.The transmission power is carefully controlled to allow communication within the cell using a given frequency while limiting the power at that frequency that escapes the cell S"<"e\\}"_  
into adjacent ones. Mn<#rBE B  
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The objective is to use the same  frequency >OxSrc@A  
in other near by cells, thus allowing the .. k>.n[`>$6|  
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