TY  - GEN
AU  - Couch,Leon W.
TI  - Digital and analog communication systems 
SN  - 0-13-081223-4
U1  - 621.382 
PY  - 2001///
CY  - Upper Saddle River, N.J.
PB  - Prentice Hall
KW  - Telecommunication systems
KW  - Digital communications
KW  - Telecommunication
N1  - Previous ed: 1997
ER  -