Synchronous Data Transmission on Digital Channels by Sampling Technique.

Digital systems for speech transmission (PCM) now make it possible to transmit in an economical way high data rates such as 64 Kbit/s. The use of these channels for data transmission raises rate adaptation, multiplexing and clock synchronization problems. A simple sampling method for transmission of clock independent synchronous data signals over a digital carrier channel is investigated. The description of a multiplexing system for synchronous and asynchronous data channels optimized for the use of high speed digital channels is given as an example of application.