Bandwidth and power efficient satellite TDMA demodulator and decoder
Abstract
A proof-of-concept demodulator for TDMA applications requiring high total data rates composed of many low data rate users is proposed. High-spectrum efficiency is obtained via a bandwidth efficient combined modulation and coding system, and low TDMA overhead is obtained via a fast acquiring digital phase lock loop. The system employs a data rate of 200 Mb/s with a bit error rate of better than 5 x 10 to the -7th in the presence of adjacent channel interference 20 dB above the weakest user. The 8-PSK modulation combined with the rate 5/6 forward error correction coding results in a bandwidth efficiency of better than 2 bits/second per Hz.
- Publication:
-
12th AIAA International Communication Satellite Systems Conference
- Pub Date:
- 1988
- Bibcode:
- 1988icss.conf..304A
- Keywords:
-
- Communication Satellites;
- Demodulators;
- Satellite-Borne Instruments;
- Time Division Multiple Access;
- Bandwidth;
- Block Diagrams;
- Decoders;
- Power Efficiency;
- Pulse Communication;
- Electronics and Electrical Engineering