以幾何方法應用於非正交多重存取之無線中繼站網路的功率控制

Abstract

本篇論文中，在非正交多重存取的小型基地台無線網路內，我們提出對於選擇中繼站節點以及決定基地站和中繼站傳輸功率的一個新的方法。為了最大化傳輸速率總和，我們提出的方法能根據通道狀態資訊在使用單中繼站模式以及雙中繼站模式之中彼此交替。對於雙中繼站模式，我們以分析圓錐截面的幾何方法推導出最佳基地台和中繼站傳輸功率控制的封閉形式解結果。根據模擬結果，我們所提出的方法能大量地增加小型基地台無線網路的吞吐量以及/或減少作為中繼站的中央使用者的功率消耗。

In this thesis, we propose a novel approach for optimally selecting relay nodes and determining transmission power levels of base station and relays in small cell wireless networks with non-orthogonal multiple access. To maximize the sum rate, the proposed approach dynamically alternates between the one-relay mode and the two-relay mode based on channel state information. For the two-relay mode, we derive novel close-form results for optimal transmission power control of the base station and relays based on analytic geometry for conic sections. Simulation results show that the proposed approach could significantly increase the throughput and/ or reduce the power consumption of wireless communication for small cell wireless networks.