Homework_7_2007

Homework_7_2007 - ECE 154B Homework #7 Due March 14, 2007...

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

View Full Document Right Arrow Icon
ECE 154B Homework #7 Due March 14, 2007 1. Consider the transmission of two FSK sinusoidal signals whose frequencies are chosen such that the signals are orthogonal. Let the amplitude of each signal be A, the duration of each signal be T, and the energy of each signal be E = A 2 T/2. Make the usual assumptions (AWGN, equal a priori probabilities, etc). If the phases of the two sinusoids are unknown at the receiver, we know to use a non-coherent receiver. As was shown in class, the probability of binary error for this receiver is: P[binary error] = ½ exp[-A 2 T/4N 0 ] = ½ exp[-E/2N 0 ]. (a) Assume that A is a fixed constant. Give an expression for the probability of error in a byte consisting of 8 binary digits. (b) Assume that A takes on the value A 1 and A 2 with probabilities p and 1-p respectively. Calculate the average probability of error per binary digit. (c) Again assume that A takes on the value A 1 and A 2 with probabilities p and 1-p respectively. For the two cases described below, calculate the average probability
Background image of page 1

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

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 11/11/2009 for the course ECE 670377 taught by Professor Wolf during the Winter '07 term at UCSD.

Page1 / 2

Homework_7_2007 - ECE 154B Homework #7 Due March 14, 2007...

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