Data-Interference Free and Low-Overhead Channel Estimation Framework for MIMO-OTFS System

doi:10.1109/LCOMM.2025.3588110

	Data-Interference Free and Low-Overhead Channel Estimation Framework for MIMO-OTFS System
	Meng, Ziyang 1,2,3; Zhang, Yu 1,2,3; Zhou, Yiqing 1,2,3; Shi, Jinglin 1,2,3
	2025-09-01
发表期刊	IEEE COMMUNICATIONS LETTERS
ISSN	1089-7798
卷号	29 期号:9 页码:2143-2147
摘要	In MIMO-OTFS systems, accurate CSI estimation with minimal pilot overhead is crucial. While guard-interval (GI)-based pilot patterns suppress data interference, they substantially increase overhead. To overcome this, we propose an interference-free, low-overhead channel estimation framework that exploits channel sparsity. Specifically, we introduce the delay-Doppler-angle basis expansion model (DDA-BEM) to reformulate the estimation task as a compressed sensing problem. Leveraging the sparsity in the DDA domain, we design a pilot pattern that inherently avoids data interference without requiring GIs. Simulation results demonstrate a 54% reduction in pilot overhead compared to state-of-the-art methods, while maintaining comparable estimation accuracy.
关键词	Channel estimation Symbols MIMO Interference Vectors Estimation Delays Accuracy Transforms Time-domain analysis MIMO-OTFS channel estimation basis expansion model pilot pattern low overhead
DOI	10.1109/LCOMM.2025.3588110
收录类别	SCI
语种	英语
资助项目	Natural Science Foundation of China[U21A20449]
WOS研究方向	Telecommunications
WOS类目	Telecommunications
WOS记录号	WOS:001576061400016
出版者	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.204/handle/2XEOYT63/41691
专题	中国科学院计算技术研究所期刊论文_英文
通讯作者	Zhou, Yiqing
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Comp Technol, State Key Lab Processors, Beijing 100190, Peoples R China 3.Beijing Key Lab Mobile Comp & Pervas Device, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Meng, Ziyang,Zhang, Yu,Zhou, Yiqing,et al. Data-Interference Free and Low-Overhead Channel Estimation Framework for MIMO-OTFS System[J]. IEEE COMMUNICATIONS LETTERS,2025,29(9):2143-2147.
APA	Meng, Ziyang,Zhang, Yu,Zhou, Yiqing,&Shi, Jinglin.(2025).Data-Interference Free and Low-Overhead Channel Estimation Framework for MIMO-OTFS System.IEEE COMMUNICATIONS LETTERS,29(9),2143-2147.
MLA	Meng, Ziyang,et al."Data-Interference Free and Low-Overhead Channel Estimation Framework for MIMO-OTFS System".IEEE COMMUNICATIONS LETTERS 29.9(2025):2143-2147.