Digital and Analog communucation systems 
Couch Leon W. II 
 - 6th ed. 
 - India  Pearson  2007 
 - 752p. 
<br/><br/><label>ISBN: </label>81-317-0737-7 
<br/><br/><label>Subjects--Topical Terms: </label>--School of Engineering and Technology
<br/><br/><label>LC Class. No.: </label>TK5101  / .C69 2007