NASA NTRS · 19740002020
Method and apparatus for a single channel digital communications system
Abstract
A method and apparatus are described for synchronizing a received PCM communications signal without requiring a separate synchronizing channel. The technique provides digital correlation of the received signal with a reference signal, first with its unmodulated subcarrier and then with a bit sync code modulated subcarrier, where the code sequence length is equal in duration to each data bit.
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Couvillon, L. A., Jr., Carl, C., Goldstein, R. M., Posner, E. C., Green, R. R.. 1973-10-16. Method and apparatus for a single channel digital communications system. https://ntrs.nasa.gov/citations/19740002020
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