一种基于OTFS调制的卫星车联网系统与性能评估  

A Satellite-Based IoV System and Performance Evaluation with OTFS Modulation

作　　者：马瞻希 薛鉴哲 周海波[1] MA Zhanxi;XUE Jianzhe;ZHOU Haibo(Nanjing University,Nanjing 210023,China)

机构地区：[1]南京大学,中国南京210023

出　　处：《中兴通讯技术》2024年第5期48-54,共7页ZTE Technology Journal

摘　　要：分析了卫星车联网(SIoV)场景的现状及星地信号传播所遇到的问题,研究利用正交时频空(OTFS)调制技术,设计并评估了基于SIoV传播信道的系统性能。此外,深入探讨了该信道在时间-频率域和时延-多普勒域的特性,并指出了OTFS调制的优势。仿真结果表明,OTFS调制在应对具有SIoV特性的信道时展现出卓越的性能稳健性。未来将进一步重点优化基于OTFS调制的系统设计,以便更好地提升SIoV中的高质量通信服务。The current situation of satellite-based Internet of vehicles(SIoV)scenarios and the problems encountered in signal propagation are analyzed,the use of orthogonal time frequency space(OTFS)modulation technology to design is studied and the system performance based on the SIoV propagation channel is evaluated.Besides,we deeply explore the characteristics of the channel in the time-frequency do⁃main and delay-Doppler domain,and point out the advantages of OTFS modulation.The simulation results show that OTFS modulation ex⁃hibits excellent robustness when dealing with channels with SIoV characteristics.Future work will focus on optimizing the system design based on OTFS modulation to further improve high-quality communication services in SIoV.

关 键 词：卫星车联网 信道分析 正交时频空 时延-多普勒域 

分 类 号：TN927.2[电子电信—通信与信息系统] U495[电子电信—信息与通信工程]