Method and device for processing the signals modules in 1984, and their application to the measurement systems in the course of drilling

摘要

The disclosure relates to a technique for receiving a carrier signal modulated with digital symbols, the symbol rate being related to the carrier frequency, such as by a submultiple or a ratio of integers. An adaptive carrier-aided symbol tracking loop is provided in which signals derived from a symbol-coherent carrier maintain and aid symbol synchronization during periods of no symbol transitions.