Singh, R.P. Sapre, S.D. <br/><br/>
Communication Systems: Analog and Digital 

 - 3rd ed. 
 - New Delhi:  Mc Graw Hill,  2019. 
<br/><br/><label>ISBN: </label>9781259004605 
<br/><br/><label>Dewey Class. No.: </label>621.38212  / SIN/C