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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

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

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

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

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

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

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

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

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

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

Channel knowledge map (CKM) is emerging as a critical enabler for environment-aware 6G networks, offering a site-specific database to significantly reduce pilot overhead. However, existing CKM construction methods typically rely on sparse…

Signal Processing · Electrical Eng. & Systems 2026-01-16 Le Zhao , Yining Wang , Xinyi Wang , Zesong Fei , Yong Zeng

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

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) has emerged as a promising technique to leverage prior propagation knowledge in low-altitude wireless networks (LAWNs), yet state-of-the-art grid-based CKM construction methods struggle to support efficient LAWN…

Signal Processing · Electrical Eng. & Systems 2026-05-11 Le Zhao , Zesong Fei , Wenge Shi , Xinyi Wang , Jingxuan Huang , Jihao Luo , Yong Zeng

The channel knowledge map (CKM) enables efficient construction of high-fidelity mapping between spatial environments and channel parameters via electromagnetic information analysis. Nevertheless, existing studies are largely confined to…

Signal Processing · Electrical Eng. & Systems 2025-11-26 Haohan Wang , Xu Shi , Hengyu Zhang , Yashuai Cao , Sufang Yang , Jintao Wang , Kaibin Huang

Channel knowledge map (CKM) emerges as a promising framework to acquire location-specific channel information without consuming wireless resources, creating new horizons for advanced wireless network design and optimization. Despite its…

Information Theory · Computer Science 2025-12-01 Xu Shi , Haohan Wang , Yashuai Cao , Hengyu Zhang , Sufang Yang , Jintao Wang

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

Channel knowledge map (CKM), which aims to directly reflect the intrinsic channel properties of the local wireless environment, is a novel technique for achieving environmentaware communication. In this paper, to alleviate the large…

Systems and Control · Electrical Eng. & Systems 2024-03-14 Zhuoyin Dai , Di Wu , Zhenjun Dong , Kun Li , Dingyang Ding , Sihan Wang , Yong Zeng

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

Channel knowledge map (CKM) has emerged as a crucial technology for next-generation communication, enabling the construction of high-fidelity mappings between spatial environments and channel parameters via electromagnetic information…

Signal Processing · Electrical Eng. & Systems 2025-05-23 Haohan Wang , Xu Shi , Hengyu Zhang , Yashuai Cao , Jintao Wang
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