Consider the system shown below sinc t dt lpf cd h

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: sampling rates: 1 = 20 kHz. T 1 (b) = 15 kHz. T 1 (c) = 2 kHz. T (a) € € € € € € 2. Consider the system shown below. sinc( t ) DT LPF C/D H LP ( F ) (cutoff frequency = ¼) € T D/C y r (t) € € T Find the output signal y r ( t ) for the following sample periods. (Note: your answers should € € have simple forms – no infinite sums, complex numbers, etc.) 1 (a) T = sec. 2 € T = 2 sec. (b) € 3. Consider the CT signal xc ( t ) = rect ( t ) shown below: € The signal is sampled with sample period T to generate the DT signal x [ n ] = xc ( nT ) . The DT signal is then put through an ideal reconstruction ∞ % t − nT ( system to generate the reconstructed signal x r ( t ) = ∑ x [ n ] sinc' *. € &T) n =−∞ € € For each of the following values of T , sketch the DT Fourier Transform magnitude X ( F ) and the reconstructed signal x r ( t ) . € (a) T =1 € 1 (b) T € = € 3 € 4. (more problems to follow…)...
View Full Document

This homework help was uploaded on 03/06/2014 for the course ECE 563 taught by Professor Goeckel during the Fall '11 term at UMass (Amherst).

Ask a homework question - tutors are online