HW1 - (a) ∑ ∞ n =-∞ Π(2[ t-n ]) (b) tu ( t ) (c) t...

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

View Full Document Right Arrow Icon
ECE 402: Communications Engineering Homework 1 (Fall 2009) Due: Tuesday 9/8 1. Find the Fourier Series (in complex exponential form) for a fully-rectified cosine wave: x ( t ) = | cos(2 πt ) | , Show all work. Hint: Be careful finding the period! 2. Evaluate Z -∞ Λ( t )comb 1 / 2 ( t ) dt . 3. Find the Fourier Transform of x ( t ) = Λ( t )comb 1 / 2 ( t ) . 4. Classify each of the following signals as a power signal, an energy signal, or neither. For a power signal, find the normalized power; for an energy signal, find the normalized energy.
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: (a) ∑ ∞ n =-∞ Π(2[ t-n ]) (b) tu ( t ) (c) t Π( t ) 5. Project 1, Chapter 1: Consider the periodic full-wave rectified cosine signal: x ( t ) = | cos(2 πt ) | . (a) Sketch the signal. What is the period? (Careful!) (b) Find the Fourier Series in complex exponential form. (c) Use MATLAB to plot one period of this signal, along with the Fourier Series using only the terms-3 ≤ n ≤ 3. Label your plot. Turn in your code and your plot. 1...
View Full Document

This note was uploaded on 01/28/2012 for the course ECE 402 taught by Professor Townsend during the Fall '08 term at N.C. State.

Ask a homework question - tutors are online