Wireless/Mobile Communication – ECE 605 – Jharkhand University of Technology – Diploma 6th Semester Examination 2023 – Complete Exam Paper with Answers

605
ECE
Jharkhand University of Technology, Ranchi
Diploma 6th Semester Examination, 2023
Subject : Wireless/ Mobile Communication Subject Code : ECE 605
Time Allowed : 3 Hours Full Marks : 80
Pass Marks : 26
Answer in your own words.
Answer five questions in which Question No. l is compulsory.
All questions carry equal marks.

1. Briefly explain the terms: Blue tooth, Cochannel interference, Reduction factor, Switched
combining, Slotted Aloha, GSM, Paging system, Digital communication, Protocol.
2. (a) Explain the working of cellular telephone system.
(b) Explain performance criteria of a basic cellular system.
3. (a) What is channel modeling? Explain in brief.
(b) Explain concept of diversity branches and signal path.
4. Explain the basic concept of Pure Aloha and Slotted Aloha.

5. Explain the mobile communication generation system till 5G.
6. List the different CDMA digital cellular standard IS-95. Explain the IS-95 system architecture and
Calls Processing.

7. Explain the concept of frequency reuse, types of hand offs and channel planning for mobile
communication.

8. Write short notes on any two:
(i) Smart mobile handset
(ii) GPRS
(ii) Space Division Multiple Access




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