3 cellular networks & infarastructure

Download 3 cellular networks & infarastructure

Post on 06-May-2015

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  • 1.A Brief Overview By Engr. Abdul Razzaque Memon Email: uldhdqpia@yahoo.comWeb: Http://www.uldhdqpia.webs.com

2. Frequency Carries/Channels The information from sender to receiver is carrierover a well defined frequency band. This is called a channel Each channel has a fixed frequency bandwidth (inKHz) and Capacity (bit-rate) Different frequency bands (channels) can be used to transmit information in parallel and independently.by: Engr. Abdul Razzaque Memon 3. Example - Frequency Spectrum Allocation in U.S. Cellular Radio Service Reverse Channel 991 992102312Forward Channel 799824-849 MHz991 992102312799869-894 MHzChannel NumberCenter Frequency (MHz)Reverse Channel 1