Couch, Leon W. <br/><br/>
Digital and analog communication systems / 
Leon W. Couch. 
 - 7th  ed. 
 - New Delhi :  Prentice-Hall of India,  2007. 
 - xxvii, 751  p. 
<br/><br/><label>ISBN: </label>8120334113 : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunication systems.<br/>Digital communications.