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Orthogonal Frequency
Orthogonality means inner product of 2 signals to be zero.
any signal which has such characteristic for a set of other signals can be used to expand other signals.
like in Fourier transform energy limited signals can be expanded by means of exponential basis.
Or 2 signal...
You cannot actually use the frequency which belongs to another operator, you will face legal charges and it would be a not pure frequency a channel which can receive interferences from subscribers of the other operator. But you can sign a agreement with that operator to share their band width...
GSM: Frequency Reusage
Dear BATMAN
If we are dealing with GSM system any GSM channel has 200KHZ bandwidth, with a separation of 10 KHZ you can presume any channel has 210Khz bandwidth, It is not clear that 12MHz bandwidth is given for both uplink and downlink or it is just given for one of...
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