Question

Which of the following is equal to received power?

(a) Square of complex voltage

(b) Complex voltage

(c) Magnitude of complex voltage

(d) Magnitude squared of complex voltage

This question was posed to me in an interview for job.

This is a very interesting question from Multipath Shape Factors for Small in section Mobile Radio Propagation: Small – Scale Fading and Multipath of Wireless/Mobile

Answer 1

Right answer is (d) Magnitude squared of complex voltage

To explain: The received power is equal to the magnitude squared of complex voltage. The mathematical operation of taking the squared magnitude of a complex quantity is a nonlinear operation.