在這篇論文中，我們探討在多輸入多輸出(Multi-input Multi-output)的振幅轉發合作式系統(Amplify-and-Forward Cooperation)，達成在中繼端上全雙工技術(Full Duplex)預編碼設計，以便提升頻譜使用效率，透過這篇論文提出的設計方法，希望突破過去全雙工技術在單一中繼端只能傳送單筆資料的缺點，提高傳輸速度，在論文中，我們利用了傳送端天線到中繼端接收天線間的通道資訊，設計了傳送訊號的預編碼矩陣；接下來，為了消除系統自身干擾，所以在中繼端之預編碼須滿足迫零的條件，及中繼端之傳送功率限制式使得總傳輸率最大化。可惜此系統最佳化問題不是凸優化問題，所以沒辦法使用拉格朗日乘法，尋求最佳解，此外，我們發現最佳解存在於可行解集合的邊界，更明確地說，解集合可在滿足功率限制等式之高維度平面上求得。最後由模擬圖的驗證，證實了我們提出的系統可以比半雙工達到更高的傳輸率，在同樣天線數目下較半雙工系統提升1.5~2倍之傳輸率。

In this thesis, we consider multi-input-multi-output (MIMO) cooperative systems with amplify-and-forward relaying protocol. We aim to implement full-duplex by designing precoding matrices at the source and relay in order to improve the spectrum efficiency. Compared with the existing work that transmits a single data stream, we would like to overcome the drawback to attain higher data rate. By exploiting the channel state information, we design precoding matrices to transmit multiple data streams. Specifically, the precoding matrices aim to maximize end-to-end capacity by suppressing self-interference under a zero-forcing criterion and power constraint. However, the optimization is not convex and intractable. Luckily, we found that the optimal solution lies at the boundary of the feasible set. Hence, the optimal solution can be found numerically by searching the feasible points that satisfy the power constraint. Finally, through computer simulation, it shows that the proposed system achieves 1.5~2 times data rate than the conventional half-duplex system.

目錄
論文審定書˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙ i
致謝˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙ ii
摘要˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙ iii
Abstract˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙iv
目錄˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙ vi
圖次˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙ vii
第一章 簡介˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙1
第二章 文獻探討˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙6
第三章 系統模型˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙ 15
第四章 最佳化設計˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙ 19
第五章 模擬結果˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙ 30
5.1 不同天線數目及資料筆數下的表現˙˙˙˙˙˙˙˙˙˙˙˙˙˙ 31
5.2 不同傳送天線數目及不同筆資料數的表現 ˙˙˙˙˙˙˙˙˙˙˙35
5.3 不同接收天線數目及不同筆資料數的表現 ˙˙˙˙˙˙˙˙˙˙˙38
5.4 半雙工跟全雙工技術的資料傳輸率比較˙˙˙˙˙˙˙˙˙˙˙˙ 42

第六章 結論˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙ 43
參考文獻 ˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙44

參考文獻
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