基于FPGA的5G物理层LowPHY设计  

Design of 5G Physical Layer LowPHY Based on FPGA

作　　者：范晓星 FAN Xiaoxing(Hebei Far-East Communication System Engineering Co.,Ltd.,Shijiazhuang 050200,China;Hebei Engineering Research Center for Private Network Communication Equipment and Technology,Shijiazhuang 050200,China)

机构地区：[1]河北远东通信系统工程有限公司,河北石家庄050200 [2]专网通信设备与技术河北省工程研究中心,河北石家庄050200

出　　处：《计算机与网络》2024年第2期150-155,共6页Computer & Network

摘　　要：在对5G O-RAN架构及物理层功能研究的基础上,设计实现了基于现场可编程门阵列(Field Programmable Gate Array,FPGA)的5G物理层LowPHY功能模块。通过对5G物理层LowPHY的功能进行分析,制定了总体设计方案,将功能模块划分为上行LowPHY模块、下行LowPHY模块及物理随机接入信道(Physical Random Access Channel,PRACH)LowPHY模块。针对LowPHY数据处理量大的特点,选用在数据处理方面具备高性能、低时延、低功耗优势的FPGA器件来实现。将设计的LowPHY功能模块与其他模块集成为O-RU单元,在5G NR系统中进行测试验证,测试结果表明本设计满足了项目需求,实现了设计目标。Based on the research of 5G O-RAN architecture and physical layer function,the 5G physical layer LowPHY function module based on Field Programmable Gate Array(FPGA)is designed and implemented.Based on the analysis of the LowPHY function of 5G physical layer,the overall design scheme is developed,and the functional modules are divided into upstream LowPHY module,downstream LowPHY module and Physical Random Access Channel(PRACH)LowPHY module.Aiming at the characteristics of large data processing capacity of LowPHY,FPGA devices with high performance,low delay and low power consumption in data processing are selected.The designed LowPHY function module is integrated with other modules into O-RU unit,which is tested and verified in 5G NR system.The test results show that the design can meet the project requirements and realize the design objectives.

关 键 词：5G 物理层 现场可编程门阵列 LowPHY 物理随机接入信道 FFT IFFT 循环前缀 正交频分复用 

分 类 号：TN929.5[电子电信—通信与信息系统]