南方科技大学知识苑(SUSTech KC): UAMP-Based Delay-Doppler Channel Estimation for OTFS Systems

题名	UAMP-Based Delay-Doppler Channel Estimation for OTFS Systems
作者	Li, Zhongjie1 ; Yuan, Weijie1 ; Guo, Qinghua 2; Wu, Nan 3; Zhang, Ji 4
通讯作者	Yuan, Weijie
发表日期	2023-10-01
DOI	10.23919/JCC.fa.2023-0067.202310
发表期刊	CHINA COMMUNICATIONS 影响因子和分区
ISSN	1673-5447
卷号	20 期号:10
摘要	Orthogonal time frequency space (OTFS) technique, which modulates data symbols in the delay-Doppler (DD) domain, presents a potential solution for supporting reliable information transmission in high-mobility vehicular networks. In this paper, we study the issues of DD channel estimation for OTFS in the presence of fractional Doppler. We first propose a channel estimation algorithm with both low complexity and high accuracy based on the unitary approximate message passing (UAMP), which exploits the structured sparsity of the effective DD domain channel using hidden Markov model (HMM). The empirical state evolution (SE) analysis is then leveraged to predict the performance of our proposed algorithm. To refine the hyperparameters in the proposed algorithm, we derive the update criterion for the hyperparameters through the expectation-maximization (EM) algorithm. Finally, Our simulation results demonstrate that our proposed algorithm can achieve a significant gain over various baseline schemes.
关键词	orthogonal time frequency space (OTFS) channel estimation hidden Markov model (HMM) unitary approximate message passing (UAMP)
相关链接	[来源记录]
收录类别	SCI
语种	英语
学校署名	第一 ; 通讯
资助项目	Key Scientific Re-search Project in Colleges and Universities of Henan Province of China[21A510003] ; Science and the Key Science and Technology Research Project of Henan Province of China[222102210053]
WOS研究方向	Telecommunications
WOS类目	Telecommunications
WOS记录号	WOS:001136296900009
出版者	CHINA INST COMMUNICATIONS
来源库	Web of Science
引用统计
成果类型	期刊论文
条目标识符	http://sustech.caswiz.com/handle/2SGJ60CL/789375
专题	工学院_电子与电气工程系
作者单位	1.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Peoples R China 2.Univ Wollongong, Sch Elect Comp & Telecommun Engn, Wollongong, NSW 2522, Australia 3.Beijing Inst Technol, Sch Integrated Circuits & Elect, Beijing 100081, Peoples R China 4.Henan Univ Sci & Technol, Sch Math & Stat, Luoyang 471000, Peoples R China
第一作者单位	电子与电气工程系
通讯作者单位	电子与电气工程系
第一作者的第一单位	电子与电气工程系
推荐引用方式 GB/T 7714	Li, Zhongjie,Yuan, Weijie,Guo, Qinghua,et al. UAMP-Based Delay-Doppler Channel Estimation for OTFS Systems[J]. CHINA COMMUNICATIONS,2023,20(10).
APA	Li, Zhongjie,Yuan, Weijie,Guo, Qinghua,Wu, Nan,&Zhang, Ji.(2023).UAMP-Based Delay-Doppler Channel Estimation for OTFS Systems.CHINA COMMUNICATIONS,20(10).
MLA	Li, Zhongjie,et al."UAMP-Based Delay-Doppler Channel Estimation for OTFS Systems".CHINA COMMUNICATIONS 20.10(2023).