M.Sc. DEGREE EXAMINATION, NOVEMBER/DECEMBER 2017.
Third Semester
Electronics and Communications
Paper IV CELLULAR AND MOBILE COMMUNICATIONS
2 21334-A
Time 3 Hours Max. Marks 70
SECTION — A
Answer any FIVE questions. 6 30 Marks)
1. Define a basic cellular system Architecture.
2. Describe some of the GSM specifications.
3. Discuss Frequency Reuse concept.
4. Explain Cell Splitting.
5. What is co-channel Interference.
6. What is SIM? How every user in the network is a provided service?
7. Explain frequency management and non-fixed channel assignment.
8. Define the terms cell splitting and small cells.
SECTION — B
Answer ALL questions. 10 40 Marks)
9. Explain the operation of a cellular system and discuss some of analog and
digital cellular systems.
Or
What are CDMA standards and discuss 3G and 4G systems.
10. Define the terms co-channel interference, frequency reuse and reduction
factor.
Or
Derive the desired C/I from a normal case in an Omni-directional antenna
system.

11. Describe the design of an antenna system for co-channel measurement and
explain the antenna parameters and their effects.
Or
Discuss in detail long distance propagation and point to point prediction mode
and explain their characteristics.
12. Explain Soft Handoff and Hard Handoff signals and explain why there are
dropped call rates and discuss their evaluation.
Or
Describe some of the operational techniques and parameters for coverage hole
filter and leaky feeders. Discuss cell splitting and small cells.