Question

The closed loop feedback exists ____

(a) between transmitter and environment

(b) between receiver and environment

(c) between transmitter and receiver

(d) among transmitter, environment, and receiver

This question was posed to me by my college professor while I was bunking the class.

The question is from Environment Awareness in section Location and Environment Awareness in Cognitive Radio of Cognitive Radio

Answer 1

Correct answer is (d) among transmitter, environment, and receiver

To explain: The implementation of closed loop feedback is simplified by co-located transmitter and receiver in self-location awareness. Thus achieving feedback loop is simpler in self-location awareness than in cooperative location awareness.