摘要
正交频分复用是多个正交子载波调制的频分复用技术,特别适合存在多径传播和多普勒频移的无线移动信道中进行高速数据传输。该文介绍了正交频分复用系统的基本原理和正交频分复用的信号产生,指出了正交频分复用系统存在的主要问题并讨论正交频分复用技术的应用。
OFDM is a FDM technology that is a multiple orthogonal sub-carriers modulation.It adapts to high-data-rate transmission in the wireless transfer channel with multi-path transmission and Douplor frequency shifting especially.This paper introduces the basic principle of OFDM and the signal produced,points out mostly problems in OFDM system and discusses the application of OFDM technology.
出处
《杭州电子科技大学学报（自然科学版）》
2007年第5期21-24,共4页
Journal of Hangzhou Dianzi University：Natural Sciences
关键词
正交频分复用
码间干扰
载波同步
OFDM
inter symbol interference(ISI)
carrier synchronization
