Question

The sample from the demodulation process consists of sample which is _______ to energy of the received symbol and _____ to noise.

(a) Directly and inversely proportional

(b) Inversely and directly proportional

(c) Both directly proportional

(d) Both inversely proportional

The question was asked in an interview for job.

I want to ask this question from Signals and Noises in section Baseband Demodulation and Detection of Digital Communications

Answer 1

Right choice is (a) Directly and inversely proportional

To explain I would say: The output symbol of the sampler consists of sample which is directly proportional to the energy of the received signal and inversely proportional to the noise.