OFDM原理及在无线高速移动通信中的应用

The Principle of OFDM and the Usage in High- speed Wireless Communication System

正交频分复用技术(OFDM)是一种无线环境下的高速数据传输技术,具有频带利用率高、可有效抵抗多径干扰和窄带干扰等优点。本文介绍了OFDM基本原理,分析了OFDM系统的优缺点,并讨论了OFDM系统在无线高速移动通信中的应用。

Orthotropic frequency division multiplexing （OFDM） is widely used as a key technique for wire- less communications. It can provide large data rate, increase the utilization of frequency spectrum, and reduce the muhipath and narrow - band interference. In this paper, we introduce the principles of OFDM at first, then analysis the advantage and disadvantages of OFDM system, and finally discuss its application in high - speed wireless mobile system.