Couch, Leon W. <br/><br/>
Digital and analog communication systems / 
Leon W. Couch II. 
 - 5th ed.,  International ed. 
 - London :  Prentice-Hall International,  c1997. 
 - xxv, 742 p. :  ill. ;  24 cm. 
<br/><br/> Previous ed.: New York: Macmillan, 1993. 
<br/><br/>Includes bibliography and index. 
<br/><br/><label>ISBN: </label>0135990289 (pbk) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunication systems.<br/>Digital communications.