極化編碼之相差空間調變

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姓名

賴湛澄(Chan-Cheng Lai) 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
(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
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★ 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
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★ 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)

極化碼可將實體獨立的二元通道化為同樣數量的等效位元通道; 在碼長趨近無窮大時，所有位元通道可區分為通道容量趨近1的完美通道與通道容量趨近0的純雜訊通道。於傳輸時只使用接近完美的極化通道，使其傳輸率達通道容量。另一方面，相差空間調變是一種一次只使用一根天線傳送訊號的多天線技術，藉由選擇傳送天線可以多傳額外的資料位元，並避免前導(pilot)訊號的浪費。
在本論文中，我們將極化碼應用於相差空間調變，針對相差空間調變中天線位元以及訊息位元分別使用不同組極化碼編碼，由模擬結果可以證實此方法有更好的錯誤率，我們也提出用於相差空間調變的低複度調變軟式輸出方法，雖錯誤率略差於原先作法，但大幅降低執行時間。

摘要(英)

Polar code converts the physical independent binary channels into the same number of equivalent bit channels; when the code length approaches infinity, all bit channels can be distinguished into perfect channels with channel capacity approaching 1, and pure noise channels with channel capacity approaching 0. Polar codes only use nearly perfect polarized channels during transmission, so that the transmission rate reaches the channel capacity. On the other hand, differential spatial modulation is a multi-antenna technique that uses only one antenna to transmit signals at a time and avoids pilot overhead. By selecting the transmitting antenna, additional data bits can be transmitted.
In this paper, we apply polar code to differential spatial modulation. Different sets of polarization codes are used for the antenna bits and message bits in differential spatial modulation. The simulation results prove that this method has better error rate. We also propose a low-complexity soft-output decoding differential spatial modulation. Although the error rate is slightly worse than the original method, the execution time is greatly reduced.

關鍵字(中)

★ 極化碼

關鍵字(英)

★ polar code

論文目次

摘要 I
Abstract II
致謝 III
目錄 IV
圖目錄 VI
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 相差空間調變 4
2.1.1 論文[24]提出的低複雜度非同調最大可能性檢測器 5
2.2極化碼回顧 7
2.2.1 通道極化 7
2.2.2二進制離散無記憶通道 8
2.2.3通道合併 9
2.2.4通道分裂 9
2.2.5極化碼編碼 10
第三章極化碼之同調與非同調檢測 13
3.1極化碼解碼 13
3.1.1 接續消除解碼法 13
3.1.2 置信傳播解碼法 15
3.2 極化碼之同調檢測 17
3.3 極化碼之非同調檢測 18
第四章極化編碼之相差空間調變 20
4.1 極化編碼之相差空間調變 20
4.2使用不同組極化碼編碼之相差空間調變方案 22
4.3低複雜度的DSM軟訊息輸出檢測器 24
第五章結論 27
參考文獻 28

參考文獻

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指導教授

魏瑞益(Ruey-Yi Wei)

審核日期

2020-12-23

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