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EC-802 (C) · 5G Technology/Important Questions

5G Technology (EC-802 (C)) - Important Questions

  1. Unit 57 Marks Medium Priority Asked: 2025

    Compare narrowband, wideband, and directional channel models. Provide examples of their applications.

    Core comparative question on channel modelling from Jun 2025 paper (Unit 5).

  2. Unit 57 Marks Medium Priority Asked: 2025, 2022

    Explain the process of channel sounding and describe different measurement methods used for characterizing wireless channels.

    Direct question on channel measurement techniques—appeared in past papers; tests practical and theoretical understanding of channel sounding.

  3. Unit 57 Marks Medium Priority Asked: 2022

    Why equalizers are important in wireless devices? Give a brief classification of equalizers used in wireless communication system.

    Fundamental question on the role and classification of equalizers in wireless systems (May 2022, Unit 5).

  4. Unit 57 Marks Medium Priority Asked: 2022

    Give a brief comparision of equalizer structures with suitable examples.

    Structure comparison question from May 2022 testing knowledge of equalizer realizations and examples.

  5. Unit 514 Marks Medium Priority Asked: 2022

    Write short note (any four) i) Fading channels ii) Blind equalizers iii) Viterbi detector iv) Fractional spaced equalizer v) Doppler spectra

    Broad short-note question (May 2022) covering several Unit 5 subtopics; useful for revision and scoring in 14-mark format.

  6. Unit 57 Marks High Priority Asked: 2022, 2024, 2025

    Discuss diversity and equalizer techniques used in wireless communication (micro vs macro diversity, blind vs decision-directed equalization).

    High-frequency thematic question on diversity and equalization techniques; reflects repeated emphasis across past papers and analytics.

  7. Unit 510 Marks Medium Priority Asked: 2024, 2025

    Explain the propagation channel model for massive MIMO systems and discuss pilot contamination and channel estimation techniques used in massive MIMO.

    Massive MIMO channel modelling and estimation question suggested by analytics (appeared in recent years).

  8. Unit 57 Marks High Priority Asked: 2022, 2024, 2025

    Derive the expression for delay spread and coherence bandwidth in a wireless channel. How does delay spread affect system performance?

    Core channel-dispersion derivation question emphasized in past papers and analytics; tests understanding of delay spread and its impact.

  9. Unit 57 Marks High Priority Asked: 2022, 2024, 2025

    Derive the expression for Doppler shift in a mobile wireless channel and discuss Doppler spectra. How does velocity impact channel time-variation?

    Doppler and time-variation question recurring across papers; assesses effect of mobility on channel characteristics.

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