正交频分复用技术在5G通信系统中的应用研究  

Research on Application of Orthogonal Frequency Division Multiplexing Technology in 5G Communication System

作　　者：蒋嘉俐 JIANG Jiali(School of Information Engineering,Minzu University of China,Beijing,100074 China)

机构地区：[1]中央民族大学信息工程学院,北京100074

出　　处：《科技资讯》2025年第6期40-42,共3页Science & Technology Information

基　　金：2023年度中国教育科学研究院“十四五”教育科研规划重点课题(项目编号:FBB049862)。

摘　　要：在信息技术不断发展的背景下,移动通信系统正逐步向更高速率、更大容量、更低延迟的方向演进。对正交频分复用(Orthogonal Frequency Division Multiplexing,OFDM)技术在5G通信系统中的应用进行了研究。从子载波分配、信道编码、同步机制、多用户接入等方面分析了OFDM技术的核心设计方法,提出了基于动态子载波分配、极化码与LDPC编码优化、循环前缀抗多径干扰等技术方案,解决了5G系统中高频谱效率、高可靠性和低延迟的传输需求。OFDM技术通过并行传输、灵活频谱利用与智能资源调度,提升了5G系统的数据传输速率和抗干扰能力,达到了优化频谱资源利用、增强系统性能的效果,为5G通信的高效运行提供了关键技术支撑。Under the background of the continuous development of information technology,the mobile communication system is gradually evolving to the direction of higher speed,larger capacity and lower delay.This paper studies the application of orthogonal frequency division multiplexing(OFDM)technology in the 5G communication system.It analyzes the core design method of OFDM technology from the aspects of subcarrier distribution,channel coding,synchronization mechanism and multi-user access,proposes the technical solutions based on dynamic subcarrier distribution,polarization codes and LDPC coding optimization,cyclic prefix resistance to multi-path interference,which solve the transmission requirements of high spectral efficiency,high reliability and low latency in 5G system.Through parallel transmission,flexible spectrum utilization and intelligent resource scheduling,OFDM technology improves the data transmission rate and anti-interference capability of the 5G system,and achieves the effect of optimizing spectrum resource utilization and enhancing the system performance,so as to provide key technical support for the efficient operation of 5G communication.

关 键 词：正交频分复用技术 5G通信系统 设计方案 资源调度 

分 类 号：TN929.11[电子电信—通信与信息系统]