System and method for frame synchronization

Abstract

A system for frame synchronization. Coarse synchronization is performed, in some embodiments, by using soft bit decisions to generate a list of candidate frame start positions, each with an associated estimated probability. The candidate frame start positions are then tested by decoding the frame data, and a frame start position for which a criterion of decoding success is met is selected. Fine synchronization is performed, in some embodiments, by using an encoded synchronization word in the encoded frame data. A first decoding pass is used to identify the position of the synchronization word. The start of the frame is inferred from the position of the synchronization word, and a second decoding pass, using the correct initial state, in the decoder, at the start of the encoded frame data, is performed.

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