Wireless Technology - May 2016

Information Technology (Semester 7)

TOTAL MARKS: 80
TOTAL TIME: 3 HOURS (1) Question 1 is compulsory.
(2) Attempt any three from the remaining questions.
(3) Assume data if required.
(4) Figures to the right indicate full marks. 1(A) Consider a cellular network with 64 cells. Each hexagonal cell has an appropriate of 10 km². The total number of radio channels allotted for the network is 336. Find the total number of channels of the network, if
a) N=4
b) N=7
c) N=12. Where N denotes cell reuse.(10 marks) 1(B) Illustrate FHSS and DSSS with suitable examples.(10 marks) 2(A) Explain in detail functional architecture of a GSM system.(10 marks) 2(B) Explain in detail MMDS and LMDS working in WLL based technology.(10 marks) 3(A) Explain in detail IEEE 802.11 WLAN Architecture.(10 marks) 3(B) Explain in detail Hidden Terminal and Exposed terminal problem with respect to WLAN.(10 marks) 4(A) Explain in wireless security offered by IEEE 802.11 in detail with neat diagram.(10 marks) 4(B) Explain in detail Bluetooth Protocol architecture with neat diagram.(10 marks) 5(A) Explain Bluetooth security aspect.(10 marks) 5(B) Explain WEP protocol in detail.(10 marks)

Write short note:

6(a) OFDM(5 marks) 6(b) WLL Architecture(5 marks) 6(c) Satellite Systems(5 marks) 6(d) MACA(5 marks)