Question

The dynamic range of signals during reception may be maximized by ____

(a) frequency conversion

(b) automatic gain control

(c) frequency conversion and filtering

(d) filtering

The question was posed to me at a job interview.

Question is taken from Hardware Architecture topic in portion Software Defined Radio Architecture of Cognitive Radio

Answer 1

Right answer is (b) automatic gain control

Explanation: The dynamic range of signals that can be processed at the receiver may be maximized by automatic gain control. Frequency conversion and filtering are done to minimize interference within the operating range of the radio.