Joint Beamforming and Power Allocation for M2M/H2H Co-Existence in Green Dynamic TDD Networks: Low-Complexity Optimal Designs

2021 ◽  
pp. 1-1
Author(s):  
Chi-Han Lee ◽  
Ronald Y. Chang ◽  
Shin-Ming Cheng ◽  
Chia-Hsiang Lin ◽  
Chiu-Han Hsiao
Keyword(s):  
Power Allocation ◽  
Low Complexity ◽  
Optimal Designs ◽  
Dynamic Tdd

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.

A low complexity power allocation scheme for NOMA-based indoor VLC systems

2020 ◽  
Vol 463 ◽  
pp. 125383
Author(s):  
Qiong Zhao ◽  
Jing Jiang ◽  
YanWen Wang ◽  
JianBo Du
Keyword(s):  
Power Allocation ◽  
Low Complexity ◽  
Allocation Scheme
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