| 摘要 |
A synchronization method in Viterbi decoder is disclosed. The synchronization method performs a fast and an effective synchronization by depuncturing and Viterbi-decoding transmitted convolutional codes punctured in a predetermined puncturing pattern assuming that a code rate is 5/6, comparing the calculated CBER to a high/low threshold value, determining a code rate group to which the code rate of the convolutional codes belong, and performing a code rate detecting process, a phase synchronization and a pattern synchronization. Therefore, when performing the Viterbi decoding, a fast and more effective synchronization can be performed with improved efficiency.
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