OFDM技术及其关键技术  

Key Techniques of OFDM

作　　者：李引凡[1] 

机构地区：[1]重庆通信学院军事信息工程系,重庆400035

出　　处：《现代电子技术》2005年第7期25-27,30,共4页Modern Electronics Technique

摘　　要：OFDM概念诞生于20世纪50～60年代,最初主要用于军事通信。然而,直到最近几年,这项技术才迅速地 从书本和实验室研究中走出,在现代通信系统中得到了实际的应用。随着许多相关技术的发展,该技术已被成功应用在有 线的数据传输系统、数字音频和视频广播系统和无线网络系统等领域。分析了OFDM技术的基本原理,并介绍了其实现的 关键技术。The concept of Orthogonal Frequency Division Multiplexing (OFDM) was came into being in mid 1950s, it was applied mainly to military communication at first. However, in recent years this technique has quickly moved out of textbooks and research laboratories and into practice in modern communications systems. Along with the development of many correlated techniques, OFDM has been employed successfully in data delivery systems over the phone line, digital audio and video broadcasting system, and wireless networking systems, etc. In this paper, the basic principles of OFDM are analyzed, then the author introduces the key techniques of OFDM.

关 键 词：正交频分复用 循环前缀 同步 峰值与均值功率比 

分 类 号：TN914.5[电子电信—通信与信息系统]