Energy Efficient Precoder Design and Power Allocation for a Low Complexity mmWave System

2021 ◽  
Author(s):  
Kali Krishna Kota ◽  
P. Ubaidulla
Keyword(s):  
Power Allocation ◽  
Energy Efficient ◽  
Low Complexity ◽  
Precoder Design

scholarly journals Low-Complexity Energy-Efficient Power Allocation With Buffer Constraint in HSR Communications

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 113867-113879
Author(s):  
Xiaoming Wang ◽  
Mi Yu ◽  
Jinling Hu ◽  
Youyun Xu
Keyword(s):  
Power Allocation ◽  
Energy Efficient ◽  
Low Complexity ◽  
Efficient Power

scholarly journals Low-complexity beam-domain channel estimation and power allocation in hybrid architecture massive MIMO systems

2019 ◽  
Vol 2019 (1) ◽  
Author(s):  
Xiao Chen ◽  
Zaichen Zhang ◽  
Liang Wu ◽  
Jian Dang
Keyword(s):  
Channel Estimation ◽  
Power Allocation ◽  
Spectral Efficiency ◽  
Communication Systems ◽  
Mimo Systems ◽  
Beam Steering ◽  
Estimation Method ◽  
Low Complexity ◽  
Estimation Accuracy ◽  
Hybrid Architecture

Abstract In this journal, we investigate the beam-domain channel estimation and power allocation in hybrid architecture massive multiple-input and multiple-output (MIMO) communication systems. First, we propose a low-complexity channel estimation method, which utilizes the beam steering vectors achieved from the direction-of-arrival (DOA) estimation and beam gains estimated by low-overhead pilots. Based on the estimated beam information, a purely analog precoding strategy is also designed. Then, the optimal power allocation among multiple beams is derived to maximize spectral efficiency. Finally, simulation results show that the proposed schemes can achieve high channel estimation accuracy and spectral efficiency.

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