極化編碼之相差空間調變的進階結果

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姓名

張宸瑋(Chen-Wei Chang) 查詢紙本館藏

畢業系所

通訊工程學系

論文名稱

極化編碼之相差空間調變的進階結果
(Further Results on Polar Coded Differential Spatial Modulation)

相關論文

★ 具有快速改變載波相位之籬柵編碼MPSK 的非同調解碼	★ 用於非同調解碼之多層次編碼調變
★ 么正空間時間籬柵碼之解碼演算法	★ 由多層次編碼所架構之非同調碼
★ 用於非同調檢測之與空時區塊碼連結的區塊編碼調變	★ 用於正交分頻多工系統具延遲處理器的空時碼
★ 用於非同調區塊編碼MPSK之A*解碼演算法	★ 在塊狀衰退通道上的籬柵么正空時調變
★ 用於非同調區塊編碼MPSK之Chase演算法	★ 使用決定回授檢測之相差空時調變的一種趨近同調特性
★ 具延遲處理器的空時碼之軟式輸入輸出遞迴解碼	★ 用於非同調區塊編碼MPSK的最大可能性解碼演算法
★ 具頻寬效益之非同調調變	★ 非同調空時渦輪碼
★ 循環字首及補零正交分頻多工系統經預編碼後之頻譜比較	★ 循環字首及補零正交分頻多工系統在時序同步上之效能比較

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摘要(中)

極化碼是目前唯一能夠被嚴格證明可以達到Shannon極限的錯誤更正碼，而空間調變是一次只使用一根天線傳送訊號的多天線技術，可藉由選擇傳送天線多傳額外的資料位元。相差編碼的空間調變可以在接收端做非同調檢測，避免了傳送導頻(pilot)訊號所造成的頻寬浪費。
在本論文中，我們將極化碼應用於理想同調的空間調變、傳送導頻訊號的空間調變及相差空間調變，並比較它們錯誤效能。發現當傳輸速率相近時，相差空間調變錯誤率會優於導頻訊號的空間調變。由於原先相差空間調變檢測器複雜度太高，我們以硬式輸出的低複雜度檢測器概念為基礎，提出低複雜度軟式輸出檢測器方法。它針對天線位元及調變位元使用不同數學式子檢測，能大幅降低執行時間及複雜度，並與原先對數最大後驗機率法檢測有相近的錯誤率。

摘要(英)

Polar coding is currently the only error correction code that can be strictly proven to achieve Shannon’s limit. Spatial modulation is a multi-antenna technique that uses only one antenna to transmit signals at a time. By selecting the transmitting antenna, additional data bits can be transmitted. Differential spatial modulation can do non-coherent detection at receiver, so it can avoid pilot overhead.
In this thesis, we apply polar codes to ideal coherent spatial modulation, pilot-based coherent spatial modulation and differential spatial modulation, and compare their error rate. It can be found that when the data rates are similar, differential spatial modulation has better error rate than pilot-based coherent spatial modulation. Because the original log-MAP detector of differential spatial modulation is very complicated, based on a low-complexity hard-output maximum-likelihood detector, so we propose a low-complexity soft-output detector for differential spatial modulation. The purposed demodulator uses different equations for antenna bit’s and modulation bit’s. This method can nearly achieve the error rate with the original log-MAP detector, and the execution time is greatly reduced.

關鍵字(中)

★ 極化碼
★ 空間調變
★ 相差空間調變

關鍵字(英)

★ polar code
★ spatial modulation
★ differential spatial modulation

論文目次

摘要.......I
Abstract.......II
誌謝.......III
目錄.......IV
圖目錄.......VI
表目錄.......VII
第一章緒論.......1
1.1 背景與研究動機.......1
1.2 內容介紹.......3
第二章相關背景回顧.......4
2.1 空間調變.......4
2.2 相差空間調變.......6
2.3 極化碼.......9
2.3.1通道極化.......9
2.3.2二進制離散無記憶通道.......11
2.3.3極化碼編碼.......12
2.3.4極化碼解碼.......14
第三章極化編碼之空間調變與相差空間調變.......19
3.1 回顧軟式輸出檢測器.......19
3.2 極化編碼之空間調變.......20
3.3 極化編碼之相差空間調變.......23
3.4 模擬結果.......25
第四章低複雜度軟式輸出的相差空間調變檢測器.......28
4.1軟訊息輸出檢測器.......28
4.2 複雜度分析.......31
4.3 模擬結果.......35
第五章結論.......38
參考文獻 .......39

參考文獻

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指導教授

魏瑞益(Ruey-Yi Wei)

審核日期

2021-7-12

推文