hw2 - EE 200L Homework 2 G. Caire September 18, 2009 1 USC...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

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

Unformatted text preview: EE 200L Homework 2 G. Caire September 18, 2009 1 USC EE 200L Foundations of Electrical Engineering Systems Fall 2009 Homework 2 Due date: Thursday, September 24, at 12:00 PM at the beginning of the class. Please drop your paper on the instructors desk. 1. Consider a transmitter located at position 0 (origin) on the real line, a reflector in position d , and a mobile receiver (e.g., a car) located at the time-dependent position r ( t ) = r + vt , where 0 < r < d , and v is the mobile speed. The transmitter sends a sinusoidal signal x ( t ) = A cos(2 f t ) The mobile receiver gets the superposition of two delayed copies of the signal, due to the direct propagation from transmitter to receiver and to the reflected path propagation (transmitter, reflector, receiver). The received signal is given by y ( t ) = x ( t- ( t )) + x ( t- 1 ( t )) where R is the reflection coefficient, and where ( t ) and 1 ( t ) are the propagation delays along the direct and reflected paths. Letting c denote the light speed, we have that the propagation delay at some distance s is given by = s c . a) For the given geometry, write the expression of ( t ) and 1 ( t ) (as a functions of t , v , c , r and d )....
View Full Document

This note was uploaded on 10/06/2009 for the course EE 200 taught by Professor Zadeh during the Fall '08 term at USC.

Page1 / 3

hw2 - EE 200L Homework 2 G. Caire September 18, 2009 1 USC...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online