Channel estimation technique in multi-antenna AF relay communication systems

2011 ◽  
Vol 28 (1) ◽  
pp. 22-29
Author(s):  
Mingxue Chen ◽  
Chengqi Xu
Keyword(s):  
Channel Estimation ◽  
Communication Systems ◽  
Estimation Technique ◽  
Relay Communication ◽  
Af Relay

Robust Channel Estimation for 5G mm Wave Massive MIMO Relay Communication Systems

2021 ◽  
Author(s):  
Heyun Lin ◽  
Hailong Zhu ◽  
Youmin Yang ◽  
Guolun Huang ◽  
Kui Huang ◽  
...  
Keyword(s):  
Channel Estimation ◽  
Massive Mimo ◽  
Communication Systems ◽  
Mimo Relay ◽  
Relay Communication

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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