Couch, Leon W. <br/><br/>
Digital and analog communication systems 
Leon W. Couch, II. 
 - 8th ed. 
 - Upper Saddle River, N.J.  Pearson  2013 
 - xxi, 762 p.  ill.  24cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9780273774211 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Digital communications.<br/>Telecommunication systems.