Deep Learning-Based Hybrid Precoder and Combiner Approach for MIMO-OFDM Systems

As one of the important technologies for the forthcoming 6G millimeter-wave massive multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) communication systems, hybrid precoding/combining (HPC) can realize the tradeoff between high spectral efficiency (SE) and computa...

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Published in:IEEE sensors journal Vol. 25; no. 5; pp. 8942 - 8949
Main Authors: Liu, Fulai, Li, Chongyuan, Wu, Yuchen, Suo, Luyao, Du, Ruiyan
Format: Journal Article
Language:English
Published: New York IEEE 01.03.2025
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Algorithms
Channel estimation
Channel state information (CSI) feedback
Communications systems
Computation
Computational efficiency
Computational modeling
Deep learning
deep learning (DL)
Efficiency
Feedback
Feedback control systems
Frequency division duplexing
hybrid precoding/combining (HPC)
Information systems
Millimeter waves
MIMO
MIMO communication
multiple-input-multiple-output (MIMO)
OFDM
Optimization
Orthogonal Frequency Division Multiplexing
pilot transmission
Precoding
Radio frequency
Sensor arrays
Sensors
ISSN:1530-437X, 1558-1748
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Abstract As one of the important technologies for the forthcoming 6G millimeter-wave massive multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) communication systems, hybrid precoding/combining (HPC) can realize the tradeoff between high spectral efficiency (SE) and computation efficiency. In this article, an innovative spectral-efficient end-to-end (E2E) HPC algorithm is proposed which jointly optimizes the pilot transmission, the channel state information (CSI) feedback, and HPC by three sub-networks. Specially, to achieve the accurate reconstruction of implicit channel, the pilot transmission sub-network (PTN) and the CSI feedback sub-network (CFN) are used to accurately and rapidly get phase information of the pilot and CSI feedback from the channel matrix, respectively. On this basis, the frequency division duplex HPC sub-network is developed to predict HPC matrices with the reconstructed channel matrix. Finally, via a newly defined loss function of SE, the presented approach jointly optimizes three sub-networks to achieve HPC rapidly and effectively. Simulations indicate the presented E2E HPC approach realizes better compromise in terms of SE and computation efficiency than other related approaches.
AbstractList As one of the important technologies for the forthcoming 6G millimeter-wave massive multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) communication systems, hybrid precoding/combining (HPC) can realize the tradeoff between high spectral efficiency (SE) and computation efficiency. In this article, an innovative spectral-efficient end-to-end (E2E) HPC algorithm is proposed which jointly optimizes the pilot transmission, the channel state information (CSI) feedback, and HPC by three sub-networks. Specially, to achieve the accurate reconstruction of implicit channel, the pilot transmission sub-network (PTN) and the CSI feedback sub-network (CFN) are used to accurately and rapidly get phase information of the pilot and CSI feedback from the channel matrix, respectively. On this basis, the frequency division duplex HPC sub-network is developed to predict HPC matrices with the reconstructed channel matrix. Finally, via a newly defined loss function of SE, the presented approach jointly optimizes three sub-networks to achieve HPC rapidly and effectively. Simulations indicate the presented E2E HPC approach realizes better compromise in terms of SE and computation efficiency than other related approaches.
Author Suo, Luyao
Wu, Yuchen
Li, Chongyuan
Du, Ruiyan
Liu, Fulai
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SubjectTerms Algorithms
Channel estimation
Channel state information (CSI) feedback
Communications systems
Computation
Computational efficiency
Computational modeling
Deep learning
deep learning (DL)
Efficiency
Feedback
Feedback control systems
Frequency division duplexing
hybrid precoding/combining (HPC)
Information systems
Millimeter waves
MIMO
MIMO communication
multiple-input-multiple-output (MIMO)
OFDM
Optimization
Orthogonal Frequency Division Multiplexing
pilot transmission
Precoding
Radio frequency
Sensor arrays
Sensors
Title Deep Learning-Based Hybrid Precoder and Combiner Approach for MIMO-OFDM Systems
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Volume 25
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