A Unified Deep Learning Method for CSI Feedback in Massive MIMO Systems

doi:10.12142/ZTECOM.202204013

ZTE Communications ›› 2022, Vol. 20 ›› Issue (4): 110-115.DOI: 10.12142/ZTECOM.202204013

收稿日期:2021-11-15 出版日期:2022-12-31 发布日期:2022-12-30

A Unified Deep Learning Method for CSI Feedback in Massive MIMO Systems

GAO Zhengguang¹(), LI Lun¹, WU Hao¹, TU Xuezhen², HAN Bingtao¹

^1.State Key Laboratory of Mobile Network and Mobile Multimedia Technology, Shenzhen 518055, China
^2.The College of Computer Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

Received:2021-11-15 Online:2022-12-31 Published:2022-12-30
About author:GAO Zhengguang (gao.zhengguang@zte.com.cn) received his BS degree from Hubei Engineering University, China in 2013, MS degree from South China Normal University, China in 2016, and PhD degree from Beijing University of Posts and Telecommunications, China in 2020. In his doctor’s degree program, he was a visiting PhD student in High Performance Networks group, University of Bristol, UK from Nov. 1, 2018 to Nov. 1, 2019. After graduation, he was selected for “LAN JIAN” program of ZTE Corporation as an algorithm researcher. His current research interests include 5G/6G communication technologies, mobile networks, and machine learning for future communications.|LI Lun received his MS degree in electronics and communication engineering from Harbin Insititute of Technology, China in 2018. He joined ZTE Corporation, China in 2018, where he is currently a technical pre-research engineer. His research interests include artificial intelligence/machine learning for wireless communications.|WU Hao received his BS degree from Beijing University of Posts and Telecommunications, China in 2010, and PhD degree from Southeast University, China in 2015, both in electrical engineering. He is now with the State Key Laboratory of Mobile Network and Mobile Multimedia Technology, ZTE Corporation, where he is a senior expert on wireless communication research and standardization. During 2011–2012, he was a visiting student at Columbia University, USA. Since 2016, Dr. WU has been a delegate representing ZTE Corporation in 3GPP RAN and RAN1, to which he has submitted numerous contributions on 4G and 5G technologies including MIMO, UE power saving, positioning and so on. His research interests include MIMO wireless communications, antenna array systems, and signal processing.|TU Xuezhen is currently pursuing her master’s degree with the College of Computer Science and Technology, Nanjing University of Aeronautics and Astronautics, China. She received her bachelor’s degree in computer science and technology from Henan University, China in 2020. Her research interest is mainly communication-efficient distributed learning.|HAN Bingtao received his BS degree from Tianjin University, China in 2001, and MS degree from Nankai University, China in 2004. He is the deputy director of the State Key Laboratory of Mobile Network and Mobile Multimedia Technology, and the leader for “Adlik” project of the LF AI & Data Foundation. Currently, he is the AI system architect of Central R&D Institute, ZTE Corporation. His current research interests include deep learning algorithms, AI systems, and network intelligence. He is the author and co-author for numerous patents and related monographs.

摘要/Abstract

Abstract:

A unified deep learning (DL) based algorithm is proposed for channel state information (CSI) compression in massive multiple-input multiple-output (MIMO) systems. More importantly, the element filling strategy is investigated to address the problem of model redesigning and retraining for different antenna typologies in practical systems. The results show that the proposed DL-based algorithm achieves better performance than the enhanced Type Ⅱ algorithm in Release 16 of 3GPP. The proposed element filling strategy enables one-time training of a unified model to compress and reconstruct different channel state matrices in a practical MIMO system.

Key words: deep learning, channel state information, element filling strategy

. [J]. ZTE Communications, 2022, 20(4): 110-115.

GAO Zhengguang, LI Lun, WU Hao, TU Xuezhen, HAN Bingtao. A Unified Deep Learning Method for CSI Feedback in Massive MIMO Systems[J]. ZTE Communications, 2022, 20(4): 110-115.

图/表 5

Figure 1 Pipeline of ACRNet+ model for channel state information (CSI) compression

Figure 2 Proposed ACRNet+ architecture

Figure 3 GCS of ACRNet+ and eType Ⅱ for the scenario with 1×16 multiple-input multiple-output (MIMO)

Figure 4 GCS of ACRNet+ and eType Ⅱ for the scenario with 2×8 multiple-input multiple-output (MIMO)

Table 1 Comparison between ACRNet+ and ACRNetH under the same compression ratio

Dataset	Method	1/4		1/8		1/15
Dataset	Method	NMSE	GCS	NMSE	GCS	NMSE	GCS
Data1	ACRNet+	-7.22	0.887 9	-5.10	0.813 4	-3.865	0.746 2
Data1	ACRNetH	-6.59	0.870 0	-4.70	0.795 8	-3.44	0.722 8
Data2	ACRNet+	-14.10	0.976 5	-9.78	0.937 5	-6.61	0.875 4
Data2	ACRNetH	-12.38	0.966 1	-8.07	0.910 5	-5.82	0.850 9
Data3	ACRNet+	-12.62	0.969 8	-8.001	0.911 4	-5.678	0.844 9
Data3	ACRNetH	-9.84	0.943	-6.812	0.882 5	-4.795	0.810 5

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A Unified Deep Learning Method for CSI Feedback in Massive MIMO Systems

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