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MU Electronics and Telecom Engineering (Semester 8)
Wireless Network
May 2012
Total marks: --
Total time: --
INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary

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1 (a) Explain RAKE receiver in CDMA.
5 M
1 (b) Explain various states in Bluetooth systems.
5 M
1 (c) Explain the concept of hidden and exposed terminals in WLAN.
5 M
1 (d) What is frequency reuse concept in GSM?
5 M

2 (a) Explain in detail IS-95 forward and reverse channels.
10 M
2 (b) Explain GSM architecture with a neat block diagram, highlighting all the interfaces.
10 M

3 (a) Explain and draw WAP architecture.
10 M
3 (b) Compare -
1. WCDMA and CDMA 2000.
2. IS-95 and CDMA 2000.
10 M

4 (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 M
4 (b) Explain in detail Bluetooth security features and security levels with proper diagram.
10 M

5 (a) Explain wireless sensor network protocol stack in detail.
10 M
5 (b) Explain the frame format in Bluetooth technology.
10 M

6 (a) Explain the following -
1. WiMAX.
2. HSPDA.
10 M
6 (b) Explain Link budget analysis and requirement of wireless network.
10 M

Write shorts notes on the following:-
7 (a) UMTS.
10 M
7 (b) Zigbee Technology.
10 M


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