TY  - BOOK
AU  - Haykin, Simon
TI  - Digital communications 
U1  - 621.382 
PY  - 1988///
CY  - New York
PB  - John Wiley 
N1  - WAVE FORM CODING--DIGITAL MODULATION--ERROR CONTROL CODING--SPREAD SPECTRUM MODULATION--DATA NETWORK
ER  -