正交时频空系统接收机关键技术综述  

Survey of key technologies for orthogonal time frequency space system receivers

作　　者：李欣儒 巩译 孟繁轲 杨立春 李双洋 LI Xinru;GONG Yi;MENG Fanke;YANG Lichun;LI Shuangyang(School of Information and Communication Engineering,Beijing Information Science and Technology University,Beijing 102206,China;School of Economics and Management,Xi’an University of Posts and Telecommunications,Xi’an 710061,China;Shenzhen Penguin Network Technology Co.,Ltd.,Shenzhen 518000,China;Department of Electrical Engineering and Computer Science,Technische Universit t Berlin,Berlin 10587,Germany)

机构地区：[1]北京信息科技大学信息与通信工程学院,北京102206 [2]西安邮电大学经济与管理学院,陕西西安710061 [3]深圳市企鹅网络科技有限公司,广东深圳518000 [4]柏林工业大学电气工程与计算机科学系,德国柏林10587

出　　处：《西安邮电大学学报》2025年第1期46-57,共12页Journal of Xi’an University of Posts and Telecommunications

基　　金：国家自然科学基金项目(62201067);北京市自然科学基金面上项目(4242003);北京信息科技大学“勤信拔尖人才”培育计划项目(QXTCP B202405)。

摘　　要：对未来移动通信中高速移动性场景下的新型正交时频空(Orthogonal Time Frequency Space,OTFS)接收机关键技术进行研究。首先,概述了OTFS技术的系统模型,对其主要优势与特性进行阐述。其次,分析OTFS系统在时频域和时延-多普勒域的输入-输出关系。然后,通过与传统正交频分复用(Orthogonal Frequency Division Multiplexing,OFDM)技术的性能比较,总结OTFS在不同通信条件下的技术优势,并进一步介绍和分析现有OTFS系统的信道估计、信号检测以及分集增益方案。最后,探讨OTFS技术在下一代通信关键技术及潜在场景下的应用前景。Key technologies of orthogonal time frequency space(OTFS)receiver in high-speed mobility scenarios of future mobile communications is studied.The system model of OTFS system is first summarized,and its primary advantages and characteristics are described.Then,the input-output relationships of the OTFS system in both time-frequency and delay-Doppler domains are analyzed.Through the performance comparison with the traditional orthogonal frequency division multiplexing(OFDM)technology,the advantages of OTFS under various communication conditions are summarized.Furthermore,the schemes for channel estimation,signal detection,and diversity gain in existing OTFS systems are further introduced and analyzed.Finally,the application prospects of OTFS technology in key technologies and potential scenarios for next-generation communication are discussed.

关 键 词：无线通信 正交时频空 正交频分复用 信道估计 信号检测 分集增益 

分 类 号：TN929.5[电子电信—通信与信息系统]