Couch, Leon W. <br/><br/>
Digital and analog communication systems / 
Leon W. Couch. 
 - 6th ed. 
 - Delhi :  Pearson education,  2005 
 - 774 P. ;  ill. ;  24 cm. 
<br/><br/>Includes indexes. 
<br/><br/><label>ISBN: </label>8178083280 0130896306 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunications systems.<br/>Digital communications.
<br/><br/><label>Dewey Class. No.: </label>621.382  / COD