TSM-321 Exam 5
Cellular Network Theory & Operation
YOU MUST SHOW ALL WORK FOR FULL CREDIT Name:_______________________
YOU MUST INCLUDE UNITS OF MEASURE (miles, feet, dB, etc) for full credit.
Use the following Figure for questions 1 & 2
(5 pts) What type of interference occurs between the two white cells? _______________________________

(5 pts) How is the interference problem identified in problem 1 usually solved? Explain how you know if the solution is adequate to fix the problem caused by the interference.

(5 pts) Label the indicated architecture elements with the proper acronym.
C
D
B
A
E

(5 pts) Define the acronyms in question 3.
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(5 pts) What is the primary function of the architecture element in question 4-A?

(5 pts) What is the primary function of the architecture element in question 4-B?

(5 pts) What is the primary function of the architecture element in question 4-C?

(5 pts) What is the primary function of the architecture element in question 4-D?

(5 pts) What is the primary function of the architecture element in question 4-E?

(5 pts) 2 mobile transmitters, A & B, are both operating on a frequency of 845.250Mhz with identical power and antenna systems and positioned 8 miles apart. The receiver is is positioned exactly halfway between the transmitters and is trying to receive a signal from Transmitter A. What must happen to reduce the interfering signal to 1/9th of its current level? Support your answer with appropriate calculations.
(5 pts) What is the formula to calculate C/I?
(5 pts) What is the C/I ratio of the system shown below system if the radius of coverage is 6 miles?
(5 pts) Is the C/I ratio in problem 12 sufficient under generally accepted…