ece 313 hw 10 - ECE 313 Fall 2010 Homework 10 –...

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: ECE 313 Fall 2010 Homework 10 – Due on Tuesday, Nov. 23 (All book problems are from Chapter 10  copies of the problems are attached.) 1. Problem 33, p. 385. 2. 3. Problem 39, p. 386. 4. Problem 43, p. 387. 5. Problem 47, p. 389. 6. Problem 49, p. 390. 7. Problem 38, p. 386. Suppose we have a signal x ( t ) = 100 sinc(100 t ) . We observe the signal y ( t ) = x ( t ) + n ( t ) where n ( t ) = 200 sinc(1000 t ) is an unwanted (interference) signal. € (a) (b) € Define the observed signal to interference ratio to be € Energy in x ( t ) SIR I = . Energy in n ( t ) Find the value of SIRI. Now suppose that y ( t ) is input to an ideal LPF having a cutoff frequency of B € Hz (that is, H LP ( f ) = 1, − B ≤ f ≤ B; H LP ( f ) = 0, otherwise). Define the signal ­to ­interference ratio at the LPF output to be Energy in part of LPF output due to x ( t ) € € SIR o = . Energy in part of LPF output due to n ( t ) € Find SIRO as a function of the LPF cutoff frequency B . € Problems from Textbook € ...
View Full Document

This note was uploaded on 10/27/2011 for the course ECE 313 taught by Professor Muschinski during the Fall '08 term at UMass (Amherst).

Ask a homework question - tutors are online