摘要
正交频分复用(Orthogonal Frequency Division Multiplexing,OFDM)是一种多载波调制技术,由于具有良好的抗多径干扰性能,适用于高速数据传输,OFDM成为近年来人们研究的热点。但是其峰均比较高,应用受到了限制,因此有必要研究降低PAPR的方法。本文首先介绍了OFDM的基本原理和PAPR的基本概念,然后讨论了目前常用的降低PAPR的方法,最后对SLM和PTS方法进行了MATLAB仿真。
Orthogonal Frequency Division Multiplexing（OFDM） is an attractive transmission technique for high-bit-rate communication systems.Because OFDM can transport information in high speed through multi-channel,it has become the hotspot these years,but it has the major disadvantage of high ratio of Peak to Average Power.So that its application is affected and the research methods are needed to reduce PAPR.First,the definition of OFDM and PAPR is given.Afterwards,the important methods to reduce PAPR are studied.Lastly,SLM and PTS are proved workable using MATLAB simulation.
出处
《电子设计工程》
2012年第1期81-84,共4页
Electronic Design Engineering
