_Digital and Analog communication systems(7th ed.)  

 - India pearson 2007  
 - 749p,;ill.  
<br/><br/> Includes index  
<br/><br/><label>ISBN: </label>9.7881317254e+012 
<br/><br/><label>Subjects--Topical Terms: </label><br/>_Digital 
<br/><br/><label>LC Class. No.: </label>TK5101.C692007