面向6G的高分辨率无线信道频域仿真方法及定位技术研究  

High Resolution Wireless Channel Simulation and Localization Technique for 6G Network

作　　者：李元杰 董超[1] 牛凯[1] LI Yuanjie;DONG Chao;NIU kai(Beijing University of Posts and Telecommunications,Beijing 100876,China)

机构地区：[1]北京邮电大学,北京100876

出　　处：《电子与信息学报》2021年第1期13-20,共8页Journal of Electronics & Information Technology

基　　金：国家重点研发计划(2018YFE0205501)。

摘　　要：为了应对6G无线信道中的小数时延和同步误差给定位系统带来的挑战,该文提出基于频域等效的高分辨率信道方法仿真以及基于到达角(AOA)信息的高分辨率定位技术。前者通过将信道抽头时延转换到频域处理,在降低时域方法带来的高复杂度的同时实现了高分辨率仿真,为时延定位信息的实现提供基础;后者则通过将迭代信道估计、基于首到达径检测的AOA估计算法与基于AOA信息的位置估计算法结合起来,在同步误差下实现高精度定位。数值仿真结果表明,二者均在相应的实际场景下实现了高分辨率特性。In order to cope with the challenges brought by the fractional delay and synchronization error in 6G wireless channel of positioning systems,this paper proposes a high resolution channel simulation method based on frequency domain equivalent and a high resolution positioning technology exploiting Angle Of Arrival(AOA)information.The former achieves high resolution while reducing the high complexity brought by time domain method due to converting channel tap delays to frequency domain to process,providing solid foundation for accurate simulation of delay information in localization;the later achieves high positioning resolution under synchronization error by combining iterative channel estimation,AOA estimation algorithm based on first arrival path detection and position estimation algorithm with AOA information input.The numerical simulation results show that they both achieve optimized performance in corresponding practical scenarios.

关 键 词：信道仿真 定位 6G 同步误差 到达角 

分 类 号：TN929.531[电子电信—通信与信息系统]