5G NR下行同步方法研究  

Research on 5G NR downlink synchronization method

作　　者：李勇 韩博文 袁冰凡 时雷[1] 车银超[1] 马新明[1] 丁红 LI Yong;HAN Bowen;YUAN Bingfan;SHI Lei;CHE Yinchao;MA Xinming;DING Hong(School of Information and Management Science,Henan Agricultural University,Zhengzhou 450046,China;Henan Agricultural and Rural Science and Technology Education Center,Zhengzhou 450008,China)

机构地区：[1]河南农业大学信息与管理科学学院,河南郑州450046 [2]河南省农业农村科技教育中心,河南郑州450008

出　　处：《现代电子技术》2023年第13期12-18,共7页Modern Electronics Technique

基　　金：国家自然科学基金项目(61501373);国家自然科学基金项目(61871322);河南省科技攻关项目(222102110234);信息与管理科学学院大学生创新创业项目(2022-XGDC-10)。

摘　　要：5G新频段(5G NR)下行同步技术作为5G新空口场景下通信功能实现的重要支撑技术,一直都是通信领域关注的焦点。文中针对5G NR下行同步方法进行研究。首先,研究下行同步技术,分析了下行同步过程包含的技术与工作流程,分别设计了主同步信号和辅同步信号的检测算法;其次,为了提高信号检测效率,针对主同步信号检测算法进行改进,提出了降采样分段检测算法,大幅度降低了信号检测的工作量与复杂度,节省了检测时间和资源;最后,对5G NR下行同步进行了仿真设计与实现,仿真得到的数据与数学分析结果一致,验证了仿真模块功能设计的可行性和正确性。The 5G new radio(5G NR)downstream synchronization technology,as an important supporting technology for the realization of communication functions in 5G new air interface scenarios,has always been the focus of attention in the communication field.In this paper,the method involved in 5G NR downstream synchronization technology is studied and analyzed.The downstream synchronization technology is studied.The technology and workflow containing in the downstream synchronization process are analyzed.The detection algorithms of the main synchronization signal and the auxiliary synchronization signal are designed respectively.In order to improve the signal detection efficiency,the main synchronization signal detection algorithm is improved,and the decreasing sampling segment detection method is proposed,which will greatly reduce the workload and complexity of signal detection,and save the detection time and resources.The simulation design of 5G NR downstream synchronization is performed,and the detection algorithm is designed.The data obtained by the simulation are consistent with the results of mathematical analysis,which confirms the feasibility and correctness of the simulation module function design.

关 键 词：5G NR 下行同步技术 下行同步方法 下行同步工作流程 同步信号检测 分段检测算法 仿真设计 

分 类 号：TN914-34[电子电信—通信与信息系统]