Dr.A.P.J.Abdul Kalam University BE VII SEM ALL BRANCH Wireless Communication [EC7011] Dec - 2020 Question Paper

Dr.A.P.J.Abdul Kalam University

Bachelor of Engineering

Seventh Semester Main Examination, Dec-2020

Wireless Communication [EC7011]

Branch: EC

Time: 3:00 Hrs Max Marks 70

Note : 1. Attempt any five questions out of eight.

           2. All question carry equal marks.

Q.1 (a) Discuss about Bit Error rate.

(b) What is RAKE receiver.

Q.2 (a) Discuss outage probability.

(b) Discuss about Micro diversity, macro diversity and simulcast.

Q.3 (a) Discuss about multipath propagation and spectrum

 limitation in wireless communication.

(b) Discuss about the free space loss, diffraction and scattering

 by rough surfaces during propagation.

Q.4 (a) Discuss about time invariant and variant two path models.

(b) Discuss about WSSUS model.

Q.5 (a) Explain small scale fading with and without a dominant component.

(b) Explain Doppler spectra and temporal dependence of fading.

Q.6 (a) Explain the deterministic channel modeling methods.

(b) Explain time domain measurements of channel sounding.

Q.7 (a) Explain about Narrow band, Wide band and Directional channel models.

(b) Explain briefly about antennas for base stations.

Q.8 (a) Discuss about error probability in AWGN channels.

(b) Discuss about error probability in delay and frequency dispersive fading channels.

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