Low complexity power allocation strategy for MIMO systems with imperfect CSI

2008 ◽  
Vol 44 (10) ◽  
pp. 651 ◽  
Author(s):  
J. Du ◽  
G.X. Kang ◽  
P. Zhang
Keyword(s):  
Power Allocation ◽  
Mimo Systems ◽  
Low Complexity ◽  
Imperfect Csi ◽  
Allocation Strategy

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 port selection and power allocation scheme in distribution MIMO systems

2010 ◽  
Vol 27 (2) ◽  
pp. 145-150 ◽  
Author(s):  
Ningbo Zhang ◽  
Guixia Kang ◽  
Yanyan Guo ◽  
Ping Zhang
Keyword(s):  
Power Allocation ◽  
Mimo Systems ◽  
Low Complexity ◽  
Allocation Scheme ◽  
Port Selection

Robust Uniform Channel Decomposition and Power Allocation for MIMO Systems with Imperfect CSI

2011 ◽  
Vol 64 (4) ◽  
pp. 761-781 ◽  
Author(s):  
Rui Chen ◽  
Jiandong Li ◽  
Wei Liu ◽  
Dan Chen ◽  
Leifang Hui
Keyword(s):  
Power Allocation ◽  
Mimo Systems ◽  
Imperfect Csi ◽  
Uniform Channel ◽  
Channel Decomposition
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