A FDM master-group signal encoding equipment
Abstract
An introduction to the techniques used in carrier wave signal encoding equipment is provided. This device converts a 300 channel 60 to 1300 kHz carrier wave signal to a 34368 kb/s digital signal which is transmitted over a third order group transmission system. On the basis of the noise requirements the description of the level allocation and number of bits for encoding the encoder is emphasized. The selection of parameters, such as the sampling frequency and the output code pattern of the encoder is discussed. The composition of the device and the testing results are also introduced.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- February 1983
- Bibcode:
- 1983STIN...8329566M
- Keywords:
-
- Analog To Digital Converters;
- Carrier Waves;
- Signal Processing;
- Coders;
- Digital Systems;
- Flip-Flops;
- Communications and Radar