Synchronization circuit for digital communication systems

Details Synchronization circuit for digital communication systems Synchronization circuit for digital communication systems

H - Electricity

04

L

340/75

H04L 7/04 (2006.01)

Patent

CA 1259386

"Synchronization Circuit for Digital Communication Systems" ABSTRACT OF THE DISCLOSURE In a digital communication system, a sync word is generated at intervals at the transmitting end and appended to a data bit stream having redundant bits generated by an error correction encoder. The sync word indicates the position of the redundant bits in the data bit stream. At a receiving end of the system, a syndrome generator is responsive to the data bit stream for deriving therefrom a syndrome and applying it to the error corrector to cause it to correct error which may exist in the data bit stream. A word synchronizer detects the sync word contained in one of the syndromes and causes the syndrome generator to establish synchronism with the data bit stream. The word synchronizer includes a detector for detecting a prescribed set of binary states in the syndromes which indicate that there is no errors in the data bit stream and causing the syndrome generator to generate a syndrome synchronously with data words in the data bit stream.

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