Monday, June 22, 2015

B.E ETC Wireless Networks VII Semester MU 2009 Question Paper

B.E. Electronics and Telecommunication Model Sample Old Previous Years Question Papers Collection of Mumbai University - B.E. Electronics and Telecommunication Mobile Communication Systems May 2009 VII Semester Question Paper:-

Question Paper University : Mumbai University
Question Paper Course : B.E. Electronics and Telecommunication
Semester : 07
Question Papers : May 2009 Question Paper
Subject : Wireless Networks
Paper Code : VR-4282
Time for Question Paper : 3 hours
Total Marks : 100
Download details of Question Paper Content Type : Texts
Number of Pages in Download of Question Papers : 01

B.E. Electronics and Telecommunication,
Wireless Networks (WN), Semester 8, May 2009.
Con. 3016-09
VR-4282
(REVISED COURSE)
(3 Hours)
[Total Mark: 100]

N.B. (1) Question No 1 is compulsory.
(2) Attempt any four questions out of remaining six questions.
(3) Draw neat sketches wherever required.
(4) Assume suitable data if required.

1. (a) Explain RAKE receiver in CDMA. (5 Marks)

(b) Explain various states in Bluetooth system. (5 Marks)

(c) List the major technical differences between cdma-2000 and W-CDMA. (5 Marks)

(d) Explain authentication procedures used in IS-95. (5 Marks)

2. (a) What are hand off messages in IS-95? Explain them with threshold. (10 Marks)

(b) Describe the three search windows used by the mobile to track the received pilot Signals in CDMA system. (10 Marks)

3. (a) Draw and explain architecture of WAP. (10 Marks)

(b) Draw the architecture of air loop WLL system. Explain each block in detail. (10 Marks)

4. (a) Explain various functionalities of LAC sub layers on common and dedicated Channels. (10 Marks)

(b) Explain in detail Bluetooth security features and security levels with proper diagrams. (10 marks)

5. Explain in detail with their flow diagrams, various call processing states in CDMA. (20 Marks)

6. (a) “CDMA is an interference limited system". Give proper justification to support this statement. Also explain in short methods used for power control in CDMA environment. (10 Marks)

(b) List forward link features for CDMA-2000. Explain each in brief. (10 Marks)

7. Write short notes on: (20 Marks)

(a) Cell loading

(b) Gold, Kasami and Walsh Sequences

(c) FHSS used in IEEE 802.11.

(d) OFDM used in WLL.

Duraimani

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