Couch,Leon W <br/><br/>
Digital and Anolog Communication Systems 

 - 6th ed 
 - Pearson, India  2001 
 - xxv,760 
<br/><br/><label>ISBN: </label>81-7808-328-0 
<br/><br/><label>Dewey Class. No.: </label>621.38 Cou