Question

What is an interference temperature model?

(a) Interference temperature model is constructed by using the cumulative RF energy from multiple transmissions

(b) Interference temperature model is constructed by using the RF energy from a single transmission

(c) Interference temperature model is constructed by using the sampling RF energy from periodic transmissions

(d) Interference temperature model is constructed by using the sampling IF energy from periodic transmissions

I got this question in examination.

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

Answer 1

The correct answer is:

(a) Interference temperature model is constructed by using the cumulative RF energy from multiple transmissions

Explanation:

The interference temperature model is a concept used in cognitive radio and wireless communication networks to manage and mitigate interference. It describes the total interference (in terms of RF energy) in a given spectrum band caused by multiple transmissions from various sources.

The model calculates the cumulative interference from all the simultaneous signals and determines how much interference can be tolerated at a particular location or frequency without affecting the quality of the communication. This allows cognitive radios to adapt and avoid interference by adjusting their transmission parameters or switching to different frequencies.

So, the model uses the cumulative RF energy from multiple transmissions (option a) rather than focusing on a single transmission or periodic sampling.

Thus, the answer is (a).