As was mentioned the one-way bandwidth available to a

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Reference no: EM13344272

As was mentioned, the one-way bandwidth available to a single operator in the AMPS system is 12.5 MHz with a channel bandwidth of 30 kHz and 21 control channels. We would like to calculate the efficiency with which this system utilizes bandwidth for a particular installation. Use the following parameters:

Cell area = 8 km².

Total coverage area = 4000 km² Frequency reuse factor = 7

Average number of calls per user during the busy hour =1.2

Average holding time of a call = 100 s

Call blocking probability = 2%

a. How many voice channels are there per cell?

b. Use Table 13.1 and a simple straight-line interpolation to determine the total traffic carried per cell, in Erlangs/cell. Then convert that to Erlangs/km².

c. Calculate the number of calls/hour/cell and the number of calls/hour/km².

d. Calculate the number of users/hour/cell and the number of users/hour/channel.

e. A common definition of spectral efficiency with respect to modulation, or modulation efficiency, in Erlangs/MHz/km², is

η_m= (Total traffic carried by the system) / ((Bandwidth)(Total coverage area))

Determine the modulation efficiency for this system.

Reference no: EM13344272

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