Assignment:
Given a mobile wireless system with a carrier frequency of f. = 900 MHz, and a Doppler frequency of ft = 50 Hz. Assuming that the dense scatterer model applies,
(a) Plot the Doppler power spectral density S(v) in the range off ± fa (use about 10 points).
(b) Explain why S(v) has the response it does at the boundaries.
(c) Calculate the coherence time To, assuming that the channel's response to sinusoids yields a correlation of at least 0.5.
Provide complete and step by step solution for the question and show calculations and use formulas.