scholarly journals On Efficient DCT Type-I Based Low Complexity Channel Estimation for Uplink NB-IoT Systems

IEEE Access ◽  
2021 ◽  
pp. 1-1
Author(s):  
Md. Sadek Ali ◽  
Md. Shariful Islam ◽  
Muhammad Asif ◽  
Wali Ullah Khan ◽  
Fujiang Lin ◽  
...  
Keyword(s):  
Channel Estimation ◽  
Low Complexity ◽  
Type I

A Low-Complexity Sparse Channel Estimation Method for OFDM Systems

2010 ◽  
Vol E93-B (8) ◽  
pp. 2211-2214
Author(s):  
Bin SHENG ◽  
Pengcheng ZHU ◽  
Xiaohu YOU ◽  
Lan CHEN
Keyword(s):  
Channel Estimation ◽  
Estimation Method ◽  
Low Complexity ◽  
Ofdm Systems ◽  
Sparse Channel Estimation ◽  
Sparse Channel

A Low Complexity Adaptive Scheme for Channel Estimation

2013 ◽  
Vol 34 (8) ◽  
pp. 1980-1985
Author(s):  
Tian-ming Ma ◽  
Yu-song Shi ◽  
Feng-rong Li ◽  
Ying-guan Wang
Keyword(s):  
Channel Estimation ◽  
Low Complexity ◽  
Adaptive Scheme

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.

On Improved DCT Based Channel Estimation with Very Low Complexity for MIMO-OFDM Systems

2009 ◽  
Author(s):  
Moussa Diallo ◽  
Rodrigue Rabineau ◽  
Laurent Cariou ◽  
Maryline Helard
Keyword(s):  
Channel Estimation ◽  
Low Complexity ◽  
Ofdm Systems ◽  
Mimo Ofdm
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