Question

An ergodic process is present in communication if many random signals have ________

(a) identical time averages

(b) identical ensemble averages

(c) identical time and ensemble averages

(d) identical bandwidth

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

My query is from AM Receiver topic in chapter Receivers & Transducers of Analog Communications

Answer 1

Right choice is (c) identical time and ensemble averages

Easy explanation: A stochastic process is said to be ergodic if its properties can be reduced from a single. A non ergodic process changes erratically at an inconsistent rate. Ergodic process exists if many random signals have identical time and ensemble averages.