非正交多重存取之無線中繼站網路的功率控制及相位選擇最佳化

本篇論文中，在包含雙中繼站的非正交多重存取小型基地台無線網路內，我們提出對於動態調整基地台以及通道品質較好的中繼站，兩者的傳送功率控制，以及調整通道品質較差的中繼站傳送訊號相位以達到更好的無線網路吞吐量的新方法。為了最大化傳輸速率總和，我們提出的方法能讓基地台和通道品質較好的中繼站隨時調整傳送功率的分配。與傳統的單中繼站非正交多重存取小型基地台無線網路不同，基地台和通道品質較好的中繼站若將傳送功率集中於其中一個使用者，不一定會達到最佳的網路吞吐量。根據模擬結果，我們所提出的方法能顯著提高小型基地台無線網路的吞吐量。

關鍵字

非正交多重存取；無線中繼站網路；功率控制；相位選擇

並列摘要

In this thesis, we propose a novel approach to dynamically allocate transmission power at the base station, and split traffic at the stronger relay, and select phase at the weaker relay in NOMA wireless relay networks. In order to maximize the network throughput, both the base station and the stronger relay optimally allocate their transmission power to transmit signals for different destinations. Unlike in a conventional one-hop NOMA network, it is not always optimal for the base station and the stronger relay to allocate all their power to transmit signals for one destination. Based on the derived analytical results, one could determine how to optimally allocate transmission power at the base station and the stronger relay, and the select phase at the weaker relay quickly. Simulation results show that the proposed approach could significantly increase the network throughput.