TY  - BOOK
AU  - Haykin, Simon 
TI  - Introduction to analog and digital communications 
SN  - 9971-51-145-2 
U1  - 621.382 HAY  
PY  - 2001///
CY  - John wiley amd sons 
PB  - New York 
KW  - COMMUNICATION SYSTEM
ER  -