【摘要】 通过一些通俗易懂的图形 ,对正交频分复用 (OFDM)的基本原理及其在移动通信中的应用进行了阐述。首先从高的频谱利用率和抗多径衰落出发 ,先对 OFDM优点的基本原理进行了阐述 ,然后分析了循环前缀对时间弥散信道所带来的 ISI和 ICI的消除。最后 ,对 OFDM的缺点进行了说明。更多还原

【Abstract】 In this article, the principle of OFDM and its application in Mobile Communications are introduced by several straightaway pictures.Firstly ,based on high utilization of frequency spectrum and reduced multipath fading , explains basic cause of bringing about OFDM′s advantages ,secondly , analyzes ISI( Inter Symbol Interference) and ICI( Inter Carrier Interference) cancellation brought by using Cyclic Prefix in a time dispersive channel.Introduces OFDM′s disadvantages in the end.更多还原