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研究生： 盧俊宇
Chun-Yu Lu
論文名稱： 用於具延遲/迴旋處理器之籬柵碼的超籬柵解碼
Super-Trellis Decoding for Trellis Codes with A Delay/Convolutional Processor
指導教授： 魏瑞益
Ruey-Yi Wei
口試委員:
學位類別： 碩士
Master
系所名稱： 資訊電機學院 - 電機工程學系
Department of Electrical Engineering
畢業學年度： 91
語文別： 中文
論文頁數： 98
中文關鍵詞： 延遲處理器 、籬柵碼 、時空碼 、硬式決定重複性解碼
外文關鍵詞： delay processor, trellis code, space-time codes
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    • 本論文提出對具延遲/迴旋處理器之籬柵碼的解碼演算法，此解碼演算法是利用由原始籬柵擴充而成的超級籬柵。此解碼方式可以改善大部分由原始籬柵解碼所造成的錯誤係數。此外，我們運用硬式決定重複性解碼 (hard-decision iterative decoding) 來改善其錯誤率效能。接著在半平穩衰退通道下，我們將具延遲/迴旋處理器之籬柵碼結合時空區塊碼而形成時空籬柵碼，基於此時空籬柵碼之超籬柵解碼演算法也在此討論。基於相同複雜度下，使用超籬柵解碼會比使用原始籬柵解碼得到較好的錯誤率效能。

    In this thesis, we propose decoding algorithms for trellis codes with a delay/convolutional processor, these decoding algorithms are based on a super trellis which is expanded from the original trellis. The proposed decoding can avoid most of the increased error coefficients caused by the decoding with the original trellis. In addition, hard-decision iterative decoding is used to improve the error performance. Moreover, the trellis code with a delay/convolutional processor is combined with the space-time block code to form a space-time trellis code for the quasi-static flat fading channel. The error performances of the decoding algorithms based on a super trellis for this space-time trellis code are investigated. Based on the same complexity, the error performances of the decoding with a super trellis are better than those of the decoding with the original trellis.

    圖表目錄 III 第一章 緒論 1 1.1 具延遲處理器之籬柵編碼調變簡介................1 1.2 研究動機..........................................................3 1.3 論文章節分配...........................................................4 第二章 具大自由距離的籬柵編碼回顧 5 2.1 集合分割....................................................................6 2.2 具延遲處理器之籬柵編碼架構......................8 2.3 具迴旋處理器之籬柵編碼架構..…...............14 2.4 時空籬柵碼簡介.......................................................19 2.5 正交時空區塊編碼簡介...................................23. 第三章 非框架傳送之超籬柵解碼 26 3.1 運用兩個編碼器擴充狀態個數之超籬柵解碼...................26 3.2 運用三個編碼器擴充狀態個數之超籬柵解碼...................36 3.3 硬式決定重複性解碼……………….........................40 3.4 瑞雷衰退通道下的超籬柵解碼.................................43 第四章 用於框架傳送之超籬柵解碼 47 4.1 用於加成性白色高斯雜訊通道……………………48 4.2 使用2根傳送天線，用於半平穩衰衰退通道……65 第五章 結論 80 英中對照表 82 參考文獻 85

    參考文獻
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    【12】 C. Gao,“A more powerful space-time trellis coded modulation scheme,” in Proc.MILCOM 2002, pp. 1049 –1052.

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