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Ece 521: Mobile And Wireless Systems Question Paper

Ece 521: Mobile And Wireless Systems

Course:Bachelor Of Engineering In Electrical And Electronics Engineering

Institution: Moi University question papers

Exam Year:2011

ECE 521: MOBILE AND WIRELESS SYSTEMS
CAT I
Instructions to candidates:
- Attempt ALL questions
- Marks will be awarded to clear, legible work. Slovenly work will be penalized
- Plagiarism will lead to automatic disqualification.

1. Expound on what you understand by the term near-far effect. (1mk)

2. Enumerate constraints of cellular communication. (3mks)

3. Discuss the purpose of handover in cellular communication. (4mks)

4. Explain what you understand by the term multiple access with reference to cellular communication. Why is it necessary? (3mks)

5. Distinguish clearly between adjacent channel interference and co-channel interference. How are they measured? (3mks)

6. Clearly differentiate between radio channel and wired channel (3mks)

7. What is frequency hopping? (1mks)

8. Identify factors considered in introducing frequency hopping. (3mks)

9. Highlight the importance of frequency planning. (3mks)

10. List 2 mitigation strategies for interference from adjacent channels. (2mks)

11. State the four categories of noise in cellular communication. (2mks)

12. Why do we approximate cells by hexagons? (3mks)

13. Identify limitations of frequency reuse. (2mks)

14. Explain the concept of Roaming as applies to cellular communication. (4mks)

Ece 521: Mobile And Wireless Systems Question Paper

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