Question

Which among the following is not a disadvantage of the interference detection method?

(a) Requirement of modulation of unlicensed signal

(b) Requirement of the activity level of licensed and unlicensed users

(c) Management of interference at the receiver

(d) Disregard for the effect of multiple xG users

I had been asked this question during an interview.

My doubt stems from Next Generation Wireless Network topic in portion Next Generation Wireless Network of Cognitive Radio

Answer 1

Right answer is (c) Management of interference at the receiver

For explanation: The interference detection method requires information such as type of unlicensed signal modulation, power control, and the activity level of licensed and unlicensed users. It does not consider the effect of multiple xG users. It requires the location of nearby primary users.