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基于可信位置排序的咬尾卷積碼譯碼算法

王曉濤 劉振華

王曉濤, 劉振華. 基于可信位置排序的咬尾卷積碼譯碼算法[J]. 電子與信息學(xué)報(bào), 2015, 37(7): 1575-1579. doi: 10.11999/JEIT141459
引用本文: 王曉濤, 劉振華. 基于可信位置排序的咬尾卷積碼譯碼算法[J]. 電子與信息學(xué)報(bào), 2015, 37(7): 1575-1579. doi: 10.11999/JEIT141459
Wang Xiao-tao, Liu Zhen-hua. Belief Ranking Based Low-complexity Maximum Likelihood Decoding Algorithm for Tail-biting Convolutional Codes[J]. Journal of Electronics & Information Technology, 2015, 37(7): 1575-1579. doi: 10.11999/JEIT141459
Citation: Wang Xiao-tao, Liu Zhen-hua. Belief Ranking Based Low-complexity Maximum Likelihood Decoding Algorithm for Tail-biting Convolutional Codes[J]. Journal of Electronics & Information Technology, 2015, 37(7): 1575-1579. doi: 10.11999/JEIT141459

基于可信位置排序的咬尾卷積碼譯碼算法

doi: 10.11999/JEIT141459

Belief Ranking Based Low-complexity Maximum Likelihood Decoding Algorithm for Tail-biting Convolutional Codes

  • 摘要: 咬尾卷積碼的傳統(tǒng)譯碼算法沒有考慮咬尾格形圖的循環(huán)性,譯碼起始位置固定,譯碼效率相對較低。該文首次證明了咬尾卷積碼基于格形圖的譯碼算法與譯碼起始位置無關(guān),即從任意位置開始譯碼得到的最優(yōu)咬尾路徑即為全局最優(yōu)咬尾路徑?;诖颂岢鲆环N基于可信位置排序的咬尾卷積碼譯碼算法。新算法利用咬尾格形圖的循環(huán)性,根據(jù)接收到的信道輸出序列估算每個譯碼起始位置的可靠性,從而選擇一個可靠性最高的譯碼起始位置。和傳統(tǒng)譯碼算法相比,所提算法具有更快的收斂速度。
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出版歷程
  • 收稿日期:  2014-11-20
  • 修回日期:  2015-02-28
  • 刊出日期:  2015-07-19

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