低複雜度之相差空間調變架構

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姓名

蔡佩名(Pei-Ming Cai) 查詢紙本館藏

畢業系所

通訊工程學系

論文名稱

低複雜度之相差空間調變架構
(Low-Complexity Differential Spatial Modulation Schemes)

相關論文

★ 全像光資訊儲存系統的編解碼	★ 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

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摘要(中)

相差空間調變是一種不需要前導訊號和通道估計的空間調變，但是相差空間調變原始所用的非同調最大可能性檢測器非常複雜。在本論文中，我們提出了兩個低複雜度之相差空間調變架構，其一是針對傳送多樣性為2的區塊編碼之相差空間調變，來降低解碼複雜度的改良設計；另一個則是改良了相差空間調變的位元映射，成為具有多個位元映射組，且仍保持全速率的相差空間調變。與原方法相比，採用我們提出之複雜度的架構後，均將能應用於更多傳送天線的系統，並且同時還改善了錯誤性能。其中對於區塊編碼之相差空間調變的設計可分為，降低複雜度的檢測器，以及與檢測器匹配的複數值天線索引矩陣，雖此檢測器之錯誤性能略差於非同調最大可能性檢測器，但整體之錯誤性能仍優於原方法；而所設計的多個位元映射組，可應用於任一相差空間調變方案的位元映射步驟，來增加電腦模擬時映射之位元數的上限，同時些微地改善錯誤性能。

摘要(英)

Differential Spatial modulation (DSM) is a kind of Spatial modulation technique that does not need pilot symbols and channel estimation. The original noncoherent detection for DSM is very complicated.In this thesis, we propose two low-complexity DSM schemes. One of them is an improved design to reduce the decoding complexity for block coded DSM (BC-DSM) with a transmission diversity of 2. The other is the bit-mapping of full-rate DSM with multiple mapping groups.Compared with the original method, our low-complexity schemes are suitable for systems with many transmission antennas, and have better error performance. The design of BC-DSM can be divided into a detector with reduced complexity, and complex-valued antenna-index matrices that matching with the detector. Although the error performance of this detector is slightly worse than the noncoherent maximum-likelihood detector, the overall error performance is still better than the original method.The designed multiple mapping groups can be applied to the bit-mapping step of any DSM to increase the upper limit of the number of mapped bits during the computer simulation, while slightly improving the error performance.

關鍵字(中)

★ 相差空間調變
★ 區塊編碼
★ 映射組
★ 低複雜度

關鍵字(英)

論文目次

摘要.........................................................i
Abstract....................................................ii
致謝.......................................................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..................................................2
第二章相關背景回顧...........................................3
2.1相差空間調變..............................................3
2.2文獻[9]提出的低複雜度非同調最大可能性檢測器..................5
2.3文獻[5]位元映射...........................................7
第三章區塊編碼之相差空間調變的低複雜度檢測.....................8
3.1文獻[21]傳送多樣性為2的區塊編碼之相差空間調變回顧............8
3.2區塊編碼之相差空間調變的低複雜度檢測.......................12
3.2.1傳送端設計.............................................12
3.2.2接收端設計.............................................16
3.2.3模擬結果與探討.........................................18
3.2.4小節..................................................23
第四章巨量天線的低複雜度相差空間調變方案......................24
4.1提出的全速率相差空間調變方案[20]...........................24
4.1.1位元映射[20]...........................................24
4.1.2新的低複雜度檢測演算法[20]..............................27
4.1.3提出的檢測法與其它現有之檢測技術的比較[20]...............30
4.1.4修改規則與範例：含有單一映射組的相差空間調變[20]..........31
4.2用於巨量傳送天線的多映射組之安排，以全映射DSM實現...........34
4.2.1多映射組的分組安排......................................34
4.2.2理想搜尋的分組與全速率映射組列表.........................38
4.2.3全映射DSM與檢測之策略[20]...............................43
第五章結論.................................................50
參考文獻....................................................51

參考文獻

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指導教授

魏瑞益(Ruey-Yi Wei)

審核日期

2020-7-23

推文