用於多重符號相差檢測之使用查表相差編碼

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姓名

魏秀如(Xiu-Ru Wei) 查詢紙本館藏

畢業系所

通訊工程學系

論文名稱

用於多重符號相差檢測之使用查表相差編碼
(Differential Encoding by a Table for Multiple-Symbol Differential Detection)

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摘要(中)

在最近有一個新的相差編碼方法被提出來，它利用查表實現，不像傳統的一樣使用相差編碼規則。本篇論文研究，用於多重符號相差檢測之使用查表相差編碼，此相差編碼根據先前多個時間傳送的符號和目前的資料位元，經由查表獲得目前傳送訊號，用此表所做的相差編碼，其最小非同調距離優於原本相差編碼，模擬結果證實有比較好。此外，我們在相差檢測器利用維特比演算法，以進一步降低錯誤率。

摘要(英)

Differential encoding by a look-up table for QAM was proposed recently.
In this thesis, but not by a rule,using differential encoding by a table for multiple- symbol differential detection.The transmitted symbol can be obtained by looking up this read-only table according to the previously transmitted multiple symbol and data bits.Using a table for differential encoding has the advantages of both low complexity and good error performance.The results show that, differential encoding by a table is equivalent to differential encoding by a trellis. Besides Viterbi algorithm to further lower error performance.

關鍵字(中)

★ 相差檢測

關鍵字(英)

★ differential encoding

論文目次

摘要 I
Abstract II
目錄 III
圖表目錄 III
第一章緒論 1
1.1 介紹 1
1.2 研究動機 2
第二章回顧使用在M-ary QAM之相差編碼查表法 3
2.1 建立相差編碼表 3
2.1.1 符號定義 3
2.1.2 主要演算法 4
2.1.3 整理群組的演算法一 6
2.1.4 整理群組的演算法二 7
2.2 16-ary QAM的相差編碼表 10
2.2.1 通道模型 10
2.2.2 建立16QAM的相差編碼表 10
2.2.3 兩符號差分檢測 15
2.2.4多重符號相差檢測 15
2.2.5 比較16QAM編碼表與16APSK編碼表 17
第三章用於多重符號相差檢測之使用查表相差編碼 18
3.1 16QAM且用於多重符號相差檢測之使用查表相差編碼 23
3.2 16APSK且用於多重符號相差檢測之使用查表相差編碼 37
3.3 16TAPSK且用於多重符號相差檢測之使用查表相差編碼 46
3.4查表法之籬柵相差編碼 53
第四章結論 55
參考文獻 56

參考文獻

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指導教授

魏瑞益(Ruey-Yi Wei)

審核日期

2011-7-11

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