大規模多天線系統中能量效率最大化之天線選擇法

Abstract

於本研究中，吾人考慮於大規模多天線系統中，在總功率限制下決定傳送射頻鏈路配置以最大化能量效率。吾人基於天線選擇法以最大化能量效率，同時權衡效能及複雜度，而提出一個基於範數與相關性之低複雜度天線選擇法。吾人所提出的天線選擇法亦可應用於大規模多用戶多天線系統中以決定射頻鏈路配置。最後，電腦模擬結果顯示出吾人提出的天線選擇法相較於傳統方法於大規模天線系統中可達到相近的能量效率。

In this thesis, we consider the problem of deciding transmit RF chain configuration aimed to maximize the energy efficiency under the total power constraint in massive MIMO systems. The RF chain configuration can be decided by applying some antenna selection methods. Considering the trade-off between the performance and complexity, we propose a norm-and-correlation-based selection algorithm with low complexity for energy efficiency maximization. The proposed selection algorithm can be applied to decide the RF chain configuration in the massive multiuser MIMO (MU-MIMO) systems as well. Finally, computer simulation results show that the proposed selection algorithm can achieve comparable energy efficiency to conventional antenna selection algorithms in massive MIMO systems.