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25-09-2021 Cognitive Radio

Q. Which among the following is a traditional method employed for effective use of spectrum?

A. Minimization of nodes per second
B. Maximization of nodes per second
C. Maximization of bits per Hz
D. Minimization of bits per Hz

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Dapzoi Verified
Commented on 2021-09-25 14:20:48 (IST)
Answer: C

Explanation: Spectrum efficiency metrics of traditional digital communication is simple as it involves measuring only the number of bits per Hz. When the number of bits per Hz is maximized, a minimal amount of spectrum is occupied. However defining spectrum metrics for cognitive radio is difficult as it includes the area of propagation in addition to the amount of spectrum.