Synchronization scheme in a turbo decoder based FEC system

摘要

A system and method for detection of frame synchronization in turbo encoded and concatenated forward error correction (FEC) systems. The system and method provides a configurable conditional synchronizer module monitoring turbo decoder input data, with an additional first synchronization check module monitoring turbo decoder output data, and an additional second synchronization check module monitoring block code decoder output data in concatenated systems. Conditional synchronization found by the configurable conditional synchronizer is reset when either check module one or two detects a loss of sync, thus reducing the probability of false synchronization locks.