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Channel knowledge map (CKM) is an emerging technique to enable environment-aware wireless communications, in which databases with location-specific channel knowledge are used to facilitate or even obviate real-time channel state information…

Information Theory · Computer Science 2021-08-17 Kun Li , Peiming Li , Yong Zeng , Jie Xu

The construction of channel gain map (CGM) is essential for realizing environment-aware wireless communications expected in 6G, for which a fundamental problem is how to predict the channel gains at unknown locations effectively by a finite…

Networking and Internet Architecture · Computer Science 2025-02-25 Jiayi Chen , Ruifeng Gao , Jue Wang , Shu Sun , Yi Wu

Channel knowledge map (CKM) is a promising technique to achieve environment-aware wireless communication and sensing. Constructing the complete CKM based on channel knowledge observations at sparse locations is a fundamental problem for…

Image and Video Processing · Electrical Eng. & Systems 2026-04-27 Z. Chen , S. Fu , Y. Zeng , X. Xu , Z. Wei

The ability to construct channel knowledge map (CKM) with high precision is essential for environment awareness in 6G wireless systems. However, most existing CKM construction methods formulate the task as an image super-resolution or…

Signal Processing · Electrical Eng. & Systems 2025-12-15 Yunzhe Zhu , Xuewen Liao , Zhenzhen Gao , Linzhou Zeng , Yong Zeng

The advent of 6G wireless networks promises unprecedented connectivity, supporting ultra-high data rates, low latency, and massive device connectivity. However, these ambitious goals introduce significant challenges, particularly in channel…

Signal Processing · Electrical Eng. & Systems 2025-06-02 Xingchen Liu , Shu Sun , Meixia Tao , Aryan Kaushik , Hangsong Yan

Channel knowledge map (CKM) provides certain levels of channel state information (CSI) for an area of interest, serving as a critical enabler for environment-aware communications by reducing the overhead of frequent CSI acquisition.…

Signal Processing · Electrical Eng. & Systems 2025-06-30 Yancheng Wang , Wei Guo , Chuan Huang , Guanying Chen , Ye Zhang , Shuguang Cui

Channel knowledge map (CKM) has emerged as a pivotal technology for environment-aware wireless communications and sensing, which provides a priori location-specific channel knowledge to facilitate network optimization. Efficient CKM…

Signal Processing · Electrical Eng. & Systems 2025-11-10 Zixiang Ren , Juncong Zhou , Jie Xu , Ling Qiu , Yong Zeng , Han Hu , Juyong Zhang , Rui Zhang

This article proposes the concept of channel knowledge map (CKM) as an enabler towards environment-aware wireless communications. CKM is a site-specific database, tagged with the locations of the transmitters and/or receivers, that contains…

Information Theory · Computer Science 2020-07-21 Yong Zeng , Xiaoli Xu

Channel knowledge map (CKM) is a promising technique that enables environment-aware wireless networks by utilizing location-specific channel prior information to improve communication and sensing performance. A fundamental problem for CKM…

Signal Processing · Electrical Eng. & Systems 2024-12-20 Shen Fu , Zijian Wu , Di Wu , Yong Zeng

Sixth-generation (6G) mobile communication networks are expected to have dense infrastructures, large antenna size, wide bandwidth, cost-effective hardware, diversified positioning methods, and enhanced intelligence. Such trends bring both…

Information Theory · Computer Science 2024-02-07 Yong Zeng , Junting Chen , Jie Xu , Di Wu , Xiaoli Xu , Shi Jin , Xiqi Gao , David Gesbert , Shuguang Cui , Rui Zhang

The substantial communication resources consumed by conventional pilot-based channel sounding impose an unsustainable overhead, presenting a critical scalability challenge for the future 6G networks characterized by massive channel…

Signal Processing · Electrical Eng. & Systems 2026-04-22 Yancheng Wang , Chuan Huang , Songyang Zhang , Guanying Chen , Wei Guo , Shenglun Lan , Lexi Xu , Xinzhou Cheng , Xiongyan Tang , Shuguang Cui

The efficient construction of accurate channel knowledge maps (CKMs) is crucial for unleashing the full potential of environment-aware wireless networks, yet it remains a difficult ill-posed problem due to the sparsity of available…

Information Theory · Computer Science 2026-01-13 Ziyu Huang , Yong Zeng , Shen Fu , Xiaoli Xu , Hongyang Du

Environment-aware communication and sensing is one of the promising paradigm shifts towards 6G, which fully leverages prior information of the local wireless environment to optimize network performance. One of the key enablers for…

Information Theory · Computer Science 2024-10-11 Di Wu , Zijian Wu , Yuelong Qiu , Shen Fu , Yong Zeng

Channel knowledge map (CKM) is viewed as a digital twin of wireless channels, providing location-specific channel knowledge for environment-aware communications. A fundamental problem in CKM-assisted communications is how to construct the…

Information Theory · Computer Science 2025-12-30 Wenjun Jiang , Xiaojun Yuan , Boyu Teng , Hao Wang , Jing Qian

With the increasing demand for real-time channel state information (CSI) in sixth-generation (6G) mobile communication networks, channel knowledge map (CKM) emerges as a promising technique, offering a site-specific database that enables…

Signal Processing · Electrical Eng. & Systems 2025-04-15 Zijian Wu , Di Wu , Shen Fu , Yuelong Qiu , Yong Zeng

Channel knowledge map (CKM) is a promising paradigm for environment-aware communications by establishing a deterministic mapping between physical locations and channel parameters. Existing CKM construction methods focus on quasi-static…

Information Theory · Computer Science 2025-12-30 Wenjun Jiang , Xiaojun Yuan , Chenchen Liu , Boyu Teng

Channel knowledge map (CKM) is a promising technology to enable environment-aware wireless communications and sensing with greatly enhanced performance, by offering location-specific channel prior information for future wireless networks.…

Signal Processing · Electrical Eng. & Systems 2025-04-25 Shen Fu , Yong Zeng , Zijian Wu , Di Wu , Shi Jin , Cheng-Xiang Wang , Xiqi Gao

Channel knowledge map (CKM) exploits environ-ment information to assist channel estimation during communi-cation. For clustered channels, which represent a typical type ofwireless propagation environment, there has been no researchdevoted…

Signal Processing · Electrical Eng. & Systems 2026-02-27 Heling Zhang , Xiujun Zhang , Xiaofeng Zhong , Shidong Zhou

Channel knowledge map (CKM) is a promising paradigm shift towards environment-aware communication and sensing by providing location-specific prior channel knowledge before real-time communication. Although CKM is particularly appealing for…

Signal Processing · Electrical Eng. & Systems 2024-11-28 Zhuoyin Dai , Di Wu , Xiaoli Xu , Yong Zeng

In 6G mobile communications, acquiring accurate and timely channel state information (CSI) becomes increasingly challenging due to the growing antenna array size and bandwidth. To alleviate the CSI feedback burden, the channel knowledge map…

Signal Processing · Electrical Eng. & Systems 2026-03-11 Kequan Zhou , Guangyi Zhang , Hanlei Li , Yunlong Cai , Shengli Liu , Guanding Yu
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