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以循環冗餘檢查來進行盲目傳輸格式檢測之系統與方法
專利

以循環冗餘檢查來進行盲目傳輸格式檢測之系統與方法

財團法人工業技術研究院, Shin-Lin Shieh, 郭仕宗, 陳伯寧韓永祥
01/02/2007

摘要

本發明提供一種對具有至少一k位元訊息塊之信號進行BTFD解碼的方法,其中k係選自一長度候選集S={s1,s2,…si},並且該等k個訊息位元係由一CRC編碼器編碼並藉由一(n,1,m)捲積編碼器來處理,以產生已編碼的資料,該方法包括解碼一接收到的訊框以形成一已解碼序列,其包括一si位元訊息與一錯誤校正碼;計算一δ(si)値;比較δ(si)與一臨界値;如果δ(si)係大於該臨界値,則重複該等解碼及計算步驟;且如果δ(si)係小於或等於該臨界値,則將該臨界値更新為δ(si)。 A method for BTFD decoding of signals having at least a message block of k-bit from a length candidate set S={s1,s2, … si}, wherein the k message bits are encoded by a CRC encoder and processed by an (n, 1, m) convolutional encoder to generate encoded data that includes decoding a received frame to form a decoded sequence that includes an si-bit message and an error correcting code, calculating a δ(si) value, comparingδ(si) with a threshold value, repeating the decoding and calculating steps if δ(si) is greater than the threshold, and updating the threshold to be δ(si) if δ(si) is less than or equal to the threshold.

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詳細資料

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