Channel Band Plan

The channel band plan is essential in any wireless system, especially one
that reuses the spectrum at defined intervals. The channel band plan is a
method of assigning channels, or fixed bandwidth, to a given amount of a
radio frequency spectrum that is then grouped in a local fashion.
An example of a channel band plan is shown in Table 2-3. The channel
band plan is for an AMPS (B-band) system utilizing an N
7 frequency
reuse pattern. The channels are all by definition 30 kHz in size. Therefore,
if one was to count the individual channels listed in the chart, 12.5 Hz of
spectrum would be accounted for. Since the cellular system is a duplexed
system, 12.5 MHz is used for both transmit and receive, while the total
spectrum utilized is 25 MHz per operator.