Important RGPV Question
EC-802 (B) Wireless Communication
VIII Sem, EC
UNIT 1-Applications And Requirements Of Wireless Services
Q.1) Write an introductory note on wireless communication and its services.
(RGPV May 2022)
Q.2) Elaborate different requirements for the wireless services in economic and social aspects.
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Q.3) Explain different technical challenges in wireless communication. Discuss all those point in brief.
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Q.4) What do you mean by reflection and transmission in wireless communication?
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Q.5) What is the history behind the evolution of wireless communication?
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Q.6) Using Kirchhoff theory and perturbation theory explain scattering of wave on rough surface.
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UNIT 2-Wireless Propagation Channels
Q.1) Classify different causes of delay dispersion in directional channel. Write its remedial also.
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Q.2) Draw and explain the WSSUS model. Describe the condensed parameters.
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Q.3) Derive the expression of Rayleigh distance in terms of antenna dimension. Also compute the Rayleigh distance of a square antenna with 20 dB gain.
(RGPV May 2024)
Q.4) Explain the time variant two path model for wireless channel.
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Q.5) Give a derivation of the amplitude and phase distribution for a small scale fading with a dominant component.
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Q.6) Discuss about the Doppler Spectra in wireless system.
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Q.7) Characterize a wireless channel as deterministic linear time variant system.
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Q.8) Discuss about the wide band models.
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UNIT 3-Channel Models
Q.1) Explain the narrowband, wideband and directional models. Also, discuss about the deterministic channel modeling methods.
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Q.2) Give a brief introduction on Channel sounding. Discuss about the time domain measurement.
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Q.3) Discuss about Ray tracing and efficiency consideration for the deterministic channel modeling method.
(RGPV May 2024)
UNIT 4-Transceivers And Signal Processing
Q.1) Sketch the structure of a wireless communication link and explain its characteristics.
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Q.2) Discuss about the AWGN models. Discuss about the error probability in AWGN channels.
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Q.3) Compare the spectral efficiency of MSK and QPSK.
(RGPV May 2024)
UNIT 5-Diversity
Q.1) Give a brief introduction on diversity in wireless communication.
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Q.2) Write any five differences between Micro diversity and Macro diversity.
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Q.3) Why equalizers are important in wireless devices? Give a brief classification of equalizers used in wireless communication system.
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Q.4) Give a brief comparison of equalizer structures with suitable examples.
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Q.5) Write short note (any four)
i) Fading channels
ii) Blind equalizers
iii) Viterbi detector
iv) Fractional spaced equalizer
v) Doppler spectra
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Q.6) Explain about Micro diversity in wireless system.
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Q.7) Explain about the fractional spaced equalizer.
(RGPV May 2024)
Extra Questions-
Q.1) Write short notes on any two of the following:
a) Viterbi detector
b) WSSUS model
c) Antennas for mobile stations
(RGPV May 2024)
— Best of Luck for Exam —
