Design and realization of a C-MAC/Packet (CMP) Data Demodulator (DD)
Abstract
A data demodulator (DD) for the European Broadcasting Union standard CMP for a television satellite frequency band was designed and realized. The standard combines analog and digital modulation in time division multiplexing. The analog modulation method (frequency modulation) and the digital method, 2-Quadra Phase Shift Keying (2-4PSK), are described. A block diagram for a possible CMP modulator was drawn. Criteria for a CMP DD were derived to read the data sent via the CMP signal by means of 2-4PSK.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- June 1984
- Bibcode:
- 1984STIN...8632657C
- Keywords:
-
- Broadcasting;
- Digital Spacecraft Television;
- Frequency Modulation;
- Frequency Standards;
- Phase Lock Demodulators;
- Phase Shift Keying;
- Time Division Multiplexing;
- Analog Data;
- Differential Pulse Code Modulation;
- Digital Data;
- European Communications Satellite;
- Electronics and Electrical Engineering