Question

A desirable modulation scheme provides _________ bit error rates at __________ received signal to noise ratios.

(a) Low, low

(b) Low, high

(c) High, high

(d) High, low

I have been asked this question by my school principal while I was bunking the class.

I'm obligated to ask this question of Digital Modulation topic in section Modulation Techniques for Mobile Radio of Wireless/Mobile

Answer 1

Correct option is (a) Low, low

The explanation is: A desirable modulation scheme provides low bit error rates at low received signal to noise ratios. They perform well in multipath and fading conditions, occupies a minimum bandwidth and is easy and cost effective to implement.