App. Res. of Comp. Accepted Paper
Vol. 44, 2027 No. 1

Intelligent algorithm for estimating target position using channel state information

Tang Gelin
Tang Zhiling
He Chao
Zhou Minrui
Yu Xiaoran
Liu Zeyu
School of Information and Communication, Guilin University of Electronic Technology, Guilin Guangxi 541000, China
DOI: 10.19734/j.issn.1001-3695.2026.06.0137

Abstract

To address the difficulty of directly obtaining high-resolution angle of arrival (AoA) and time of flight (ToF) joint spectra from channel state information (CSI) in Wi-Fi networks, which limits high-accuracy localization, we propose a CNN_ToF_Mamba intelligent algorithm for target position estimation through CSI-to-AoA-ToF joint-spectrum mapping. We build the proposed method on a convolutional encoder-decoder and design a ToF enhancement module to explicitly enhance frequency variations and local peak structures along the delay dimension. We further introduce a two-dimensional bidirectional Mamba module to capture global dependencies in the AoA-ToF joint spectrum. To reduce the impact of the large dynamic range of spectrum values on model training, we adopt input normalization, logarithmic label transformation, and a joint loss function as training strategies. Experimental results show that CNN_ToF_Mamba achieves a Raw R² of 0.9998, a Raw RMSE of 8.1394, and a Peak Error of 0.995 px. Compared with DenseED, the proposed method reduces the mean positioning error to 0.063 m and the standard deviation to 0.042 m. These results demonstrate that the proposed method effectively improves AoA-ToF joint-spectrum reconstruction and further enhances high-accuracy localization performance in Wi-Fi networks.

Foundation Support

中央引导地方科技发展资金项目(ZY24212003)
国家自然科学基金地区科学基金项目(62461014)
广西自然科学基金项目(2025GXNSFAA069602)

Publish Information

DOI: 10.19734/j.issn.1001-3695.2026.06.0137
Publish at: Application Research of Computers Accepted Paper, Vol. 44, 2027 No. 1

Publish History

[2026-09-14] Accepted Paper

Cite This Article

唐格林, 唐智灵, 何超, 等. 利用信道状态信息估计目标位置的智能算法 [J]. 计算机应用研究, 2027, 44 (1). (2026-09-14). https://doi.org/10.19734/j.issn.1001-3695.2026.06.0137. (Tang Gelin, Tang Zhiling, He Chao, et al. Intelligent algorithm for estimating target position using channel state information [J]. Application Research of Computers, 2027, 44 (1). (2026-09-14). https://doi.org/10.19734/j.issn.1001-3695.2026.06.0137. )

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  • Application Research of Computers Monthly Journal
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    CN  51-1196/TP

Application Research of Computers, founded in 1984, is an academic journal of computing technology sponsored by Sichuan Institute of Computer Sciences under the Science and Technology Department of Sichuan Province.

Aiming at the urgently needed cutting-edge technology in this discipline, Application Research of Computers reflects the mainstream technology, hot technology and the latest development trend of computer application research at home and abroad in a timely manner. The main contents of the journal include high-level academic papers in this discipline, the latest scientific research results and major application results. The contents of the columns involve new theories of computer discipline, basic computer theory, algorithm theory research, algorithm design and analysis, blockchain technology, system software and software engineering technology, pattern recognition and artificial intelligence, architecture, advanced computing, parallel processing, database technology, computer network and communication technology, information security technology, computer image graphics and its latest hot application technology.

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