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Problem Set 6 Solutions - Communication Systems Engineering | ELEG 403, Assignments of Electrical and Electronics Engineering

University of Delaware (UD)Electrical and Electronics Engineering

Material Type: Assignment; Class: Communication Systems Engineering; Subject: Electrical Engineering; University: University of Delaware; Term: Unknown 1989;

Typology: Assignments

Pre 2010

Uploaded on 09/02/2009

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CHAPTER 6 Problem 6.1 (a) ASK with coherent reception x(t) T Decision [rh |—__———met : Lo at device s(t) Denoting the presence of symbol 1 or symbol 0 by hypothesis H, or Hoe respectively, we may write Hit x(t) = s(t) + w(t)” Ho: x(t) 0 w(t) where s(t) = A.cos(2nft), with & = /2E,7T,. Therefore, 1, / £ =f? x(t) s(t) dt 4 0 a4 If % > E,/2, the receiver decides in favor of symbol 1. If % < E,/2, it decides in favor of symbol 0. The conditional probability density functions of the random variable L, whose value 299