Asymptotic spectral efficiency of multicell mimo systems with frequency-flat fading

2003 ◽  
Vol 51 (11) ◽  
pp. 2976-2988 ◽  
Author(s):  
Huaiyu Dai ◽  
H.V. Poor
Keyword(s):  
Spectral Efficiency ◽  
Mimo Systems ◽  
Flat Fading ◽  
Multicell Mimo

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.

scholarly journals Quasi-Distributed Antenna Selection for Spectral Efficiency Maximization in Subarray Switching XL-MIMO Systems

2021 ◽  
pp. 1-1
Author(s):  
Joao Henrique Inacio De Souza ◽  
Abolfazl Amiri ◽  
Taufik Abrao ◽  
Elisabeth De Carvalho ◽  
Petar Popovski
Keyword(s):  
Spectral Efficiency ◽  
Mimo Systems ◽  
Antenna Selection ◽  
Distributed Antenna ◽  
Selection For

scholarly journals Pencil and Shaped Beam Patterns Synthesis Using a Hybrid GA/l₁ Optimization and Its Application to Improve Spectral Efficiency of Massive MIMO Systems

IEEE Access ◽  
2021 ◽  
Vol 9 ◽  
pp. 38202-38220
Author(s):  
Samar Ibrahim Farghaly ◽  
Hussein Eltaibee Seleem ◽  
Mustafa Mahmoud Abd-Elnaby ◽  
Amr Hussein Hussein
Keyword(s):  
Spectral Efficiency ◽  
Massive Mimo ◽  
Mimo Systems ◽  
Shaped Beam ◽  
Beam Patterns
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