Q3 Consider a cellular systemwith 495 total allocated voicechannel frequencies and an S/Iratio of 20 dB is required forthe accepted voice quality.Assume y = 3.(a) What shouldbe the reuse factor for thesystem?(b) If there are 36 totalcells and the radius of the cell2km, what geographic area iscovered, how many channelsare there per cell, and what isthe total number of concurrentcalls that can be handled?

Answered: Q3 Consider a cellular system with 495…

Q3 Consider a cellular system with 495 total allocated voice channel frequencies and an S/I ratio of 20 dB is required for

EBK ELECTRICAL WIRING RESIDENTIAL

19th Edition

ISBN:9781337516549

Author:Simmons

Publisher:Simmons

Chapter25: Television, Telephone, And Low-voltage Signal Systems

Section25.1: Television Circuit

Problem 15R

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Concept explainers

Amplitude modulation

A radio signal can carry information in the form of sound or image for broadcasting or communication. For it to be sent to a greater distance, the signal must be changed or modulated in some way. One of the easiest way is to change the amplitude of the signal with variations of the video or the audio signal. This is called Amplitude Modulaton. In this modulation information of message is carried in amplitude of carrier signal.

Question

Q3 Consider a cellular system
with 495 total allocated voice
channel frequencies and an S/I
ratio of 20 dB is required for
the accepted voice quality.
Assume y = 3.(a) What should
be the reuse factor for the
system?(b) If there are 36 total
cells and the radius of the cell
2km, what geographic area is
covered, how many channels
are there per cell, and what is
the total number of concurrent
calls that can be handled?

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