5G NR下行同步方法研究

Research on 5G NR downlink synchronization method

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.