Blind frame synchronization for error correcting codes having a sparse parity check matrix
IEEE Transactions on Communications
Bit error rate estimation for turbo decoding
IEEE Transactions on Communications
Blind frame synchronization of product codes based on the adaptation of the parity check matrix
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Noncoherent frame synchronization
IEEE Transactions on Communications
Frame synchronization based on multiple frame observations
IEEE Transactions on Wireless Communications
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This paper proposes a novel frame synchronization methodology for packets with convolutionally encoded data. Rather than by placing sync bits in a separate header, the sync bits are placed in a midamble and encoded as part of the data sequence, using the error correction encoder to resolve time ambiguities. The scheme is based on the principle that an error in trellis termination may result in decoding a wrong information bit sequence, while the starting portion of the sequence can be decoded as error free. This frame synchronization technique is extended to the synchronization of turbo-coded systems using a list-based approach, where the first synchronizer provides a list of potential packet starting positions, and the following synchronizer makes the final decision. The performance improvement over conventional synchronization techniques is quantified via simulation