06-02-2013, 04:14 PM
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD M.Tech I - Semester Examinations, March/April-2011
JAWAHARLAL NEHRU .pdf (Size: 13.36 KB / Downloads: 29)
1.a) Describe the evolution of wireless radio communication systems.
b) If 20 MHz of total spectrum is allocated for a duplex wireless FDD cellular
telephone system and each simplex channel has 25 KHz RF bandwidth, find:
i) The number of duplex channels.
ii) The total number of channels per cell site, if N = 4 cell reuse factor is used.
[12]
2.a) Explain the following types of spread spectrum multiple access techniques.
i) FHMA
ii) CDMA.
b) Determine the maximum throughput that can be achieved using ALOHA and
slotted ALOHA protocols. [12]
3.a) Differentiate between wireless and fixed telephone networks.
b) List out the main features of various generations of wireless networks
4.a) Explain the common channel signaling network architecture.
b) Describe an integrated services digital network with the help of block diagram.
[12]
5.a) Explain how a mobile IP node uses discovery procedure to identify prospective
home agents and foreign agents.
b) Describe transaction classes of wireless transaction protocol. [12]
6.a) Explain the applications of wireless LANs.
b) Describe IEEE 802.11 architecture. [12]
7.a) Give brief notes on data oriented CDPD Network.
b) Explain briefly the operation of mobile application protocol. [12]
8. Write short notes on the following
a) Ad-hoc wireless networks
b) MAC protocol in Ad-hoc wireless networks.