OFDM技术介绍-原理、特点、发展、应用现状与前景
首发时间:2005-04-20
摘要:OFDM技术是一种多载波调制技术,最初用于军事通信,由于采用DFT实现多载波调制,同时LSI的发展解决了IFFT/FFT的实现问题以及其他关键技术的突破,OFDM开始向诸多领域的实际应用转化,现在成为一种很有发展前途的调制技术。本文首先分析了OFDM的基本原理,并说明其技术优点和缺点,然后提及有关OFDM技术发展方面的一些信息。现在,OFDM在许多领域取得成功应用,这里对有关无线局域网中的OFDM应用现状作了简要说明, 对OFDM的应用前景也作了展望。
关键词: 正交频分复用(OFDM) 原理 特点 发展 应用
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The Introduction of OFDM(the core of 4G)
Abstract:Orthogonal Frequency Division Multiplexing(OFDM) is a kind of technology of Multi-Carrier Modulation(MCM).Depending on Discrete Fourier Transform( DFT) to realize MCM and the quick development of Large Scale Integration( LSI) to solve the question of the solution of IFFT/FFT,OFDM began to be using practically in many fields and is becoming a prosperous MCM-technique.In this paper,firistly the principles of OFDM are analyzed and its characters(merit and defect) are reviewed,then some information about the development of OFDM is introduced.At current time,OFDM has succeeded in many fields, given an example,the present situation of using OFDM on wireless local area net is stated,finally the prospect of using OFDM is imaged.
Keywords: Orthogonal Frequency Division Multiplexing(OFDM) Character Development Present Situation and Prospect of Application
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No.1900129921113959****
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