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Spectrum Sensing MCQ Questions And Answers - Cognitive Radio

Spectrum Sensing MCQs : This section focuses on the "Spectrum Sensing" in Cognitive Radio. These Multiple Choice Questions (MCQs) should be practiced to improve the Cognitive Radio skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.

Question 1

Spectrum sensing is a critical issue of cognitive radio technology.

C. Can be true or false
D. Can not say

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Question 2

_____________ is the process of periodically monitoring a specific frequency band, aiming to identify presence or absence of primary users.

A. Spectrum Management
B. Spectrum Mobility
C. Spectrum sensing
D. Spectrum Sharing

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Question 3

What is the purpose of in-band sensing?

A. Spectrum handoff
B. Sharing spectrum information
C. Sharing spectrum resources
D. Interference avoidance

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Question 4

Spectrum sensing carried out during transmission is called ______________

A. full-band sensing
B. in-band sensing
C. out-band sensing
D. half-band sensing

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Question 5

Which among the following is not a transmission detection technique?

A. Matched filter detection
B. Energy detection
C. Cyclostationary detection
D. Interference based detection

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Question 6

Which among the following is not an operational unit in energy detection?

A. Squaring unit
B. Integrator
C. Correlator
D. Threshold device

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Question 7

Which among the following is achieved by coupling a modulated signal with a sine wave carrier?

A. Causality
B. Periodicity
C. Linearity
D. Stability

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Question 8

What is the purpose of out-of-band sensing?

A. Fast switching
B. Fast routing
C. Fast discovery
D. Fast handoff

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Question 9

Which among the following is not a disadvantage of cooperation detection?

A. Overhead traffic
B. Receiver uncertainty
C. Additional storage
D. Shadowing uncertainty

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Question 10

Cooperative spectrum sensing (CSS) is used to overcome the channel effects and exploit location diversity to detect even a weak primary signal.

C. Can be true or false
D. Can not say

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