Carlson, A. Bruce <br/><br/>
Communication systems  an introduction to signals and noise in electrical communication 
A. Bruce Carlson, Paul B. Crilly; Janet c. Tutledge. 
 - 4th ed. 
 - New Delhi  McGraw Hill  2002 
 - xiii, 850p., 24cm 
<br/><br/><label>ISBN: </label>0 - 07 - 121028 - 8. 
<br/><br/><label>Dewey Class. No.: </label>621.38223  / C20C