Quiz2

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: form what the casino sent them, to obtain either x1 [n] or x2 [n] — you will know which from your earlier answers. 24. [4 points]: How can you recover x[n] from either x1 [n] alone or x2 [n] alone, using the fact that x[n] is 0 for n < 0? The general lesson here is that a one-sided signal (i.e., a signal that is identically zero for all n less than some n0 , or for all n greater than some n0 ) is uniquely determined by just the real part (or equivalently, by just the imaginary part) of its DTFT. Page 16 of 17 6.02 Fall 2012, Quiz 2 VI Bring Me the Messenger [Although this problem is phrased in continuous-time, it should be quite straightforward for you to do on the basis of the fundamentals you’ve learned in the setting of DT modulation/demodulation. If it helps you, you could think instead in terms of DT samples of the signals here, taken at some sampling rate fs kHz, and then map each frequency f given here in kHz to a frequency of Ω = 2πf /fs radians/sample. However, that’s much more com...
View Full Document

This document was uploaded on 03/17/2014 for the course ELECTRICAL 6.02 at MIT.

Ask a homework question - tutors are online