蘇炫榮臺灣大學：電信工程學研究所楊育翰Yang, Yu-HanYu-HanYang2007-11-272018-07-052007-11-272018-07-052007http://ntur.lib.ntu.edu.tw//handle/246246/58965在此一論文中，我們解決了多用戶多輸入多輸出下傳波束成形的問題。發射機是一個多天線的基站廣播給用戶。每個用戶都可以以多重天線接收。我們提出一個具訊號干擾雜訊比和功率分配的聯合收發波束成形下傳多用戶多輸入多輸出系統的解決辦法。波束成形的過濾器是一個利用集團內部合作的最大訊號干擾雜訊比的濾波器。利用它們之間的上傳下傳偶性，所提出的演算法迭代地計算收發波束成形過濾器和功率分配矩陣。In this work we aim to solve the multiuser MIMO downlink beamforming problem. The transmitter is a multiantenna base-station broadcasting to users. Each user may have multiple antennas at the receiver. A solution to the joint transmit-receive beamforming and power allocation under SINR constraints in the downlink of multiuser MIMO systems is proposed. The beamforming filter is a maximum SINR filter which exploits the intra-group cooperation. Taking advantage of the uplink-downlink duality property, the proposed algorithm iteratively compute the transmit-receive beamforming filters and the power allocation matrix.1 Introduction 3 1.1 Background . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.2 PreviousWork . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2 System Model and Problem Formulation 6 2.1 SystemModel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.2 ProblemFormulation . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3 Maximum SINR Beamforming 11 4 Power Allocation Strategies 14 4.1 Group Power Allocation . . . . . . . . . . . . . . . . . . . . . . . . . 14 4.1.1 SumPower Constraint . . . . . . . . . . . . . . . . . . . . . . 15 4.1.2 Power Minimization . . . . . . . . . . . . . . . . . . . . . . . 19 4.2 Antenna Power Allocation . . . . . . . . . . . . . . . . . . . . . . . . 20 4.2.1 Power Minimization . . . . . . . . . . . . . . . . . . . . . . . 21 4.2.2 SumPower Constraint . . . . . . . . . . . . . . . . . . . . . . 22 5 Simulation Results 26 6 Conclusion 30 Bibliography 31437090 bytesapplication/pdfen-US多輸入多輸出波束成形MIMOBeamformingthesishttp://ntur.lib.ntu.edu.tw/bitstream/246246/58965/1/ntu-96-R94942109-1.pdf