Survey of channel estimation method in delay-Doppler domain for OTFS

被引：0
|
作者：
Xing W. [1 ,2 ]
Tang X. [3 ]
Zhou Y. [1 ,2 ]
Zhang C. [1 ,2 ]
Pan Z. [4 ]
机构：
[1] State Key Lab of Processors, Institute of Computing Technology, Chinese Academy of Sciences, Beijing
[2] School of Computer Science and Technology, University of Chinese Academy of Sciences, Beijing
[3] School of Space Information, Space Engineering University, Beijing
[4] Beijing Unisoc Technologies Co., Ltd., Beijing
来源：
Tongxin Xuebao/Journal on Communications | 2022年 / 43卷 / 12期
基金：
国家重点研发计划;
关键词：
channel estimation; delay-Doppler domain; orthogonal frequency division multiplexing; orthogonal time frequency space;
D O I：
10.11959/j.issn.1000-436x.2022224
中图分类号：
学科分类号：
摘要：
In order to provide reliable communication service for high-mobility scenarios, 6G can consider DD (delay-Doppler) domain based OTFS (orthogonal time frequency space) as its modulation scheme. By mapping the transmitted symbols onto DD domain and transforming them into TF (time-frequency) domain, OTFS endows all the transmitted symbols with the potential of capturing time-frequency full diversity, effectively improving the performance of communication in time-varying fading channels. Due to the superior properties of DD effective channel, the existing OTFS channel estimation methods were mostly carried out in DD domain. Considering the difference of implementation and application scenarios, existing DD channel estimation methods for OTFS were divided into three categories and overviewed, after which the challenges and potential solutions for current DD channel estimation methods were summarized and analyzed. © 2022 Editorial Board of Journal on Communications. All rights reserved.
引用
收藏
页码：188 / 201
页数：13
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