OFDM系统中降低峰均比的改进联合算法  

Combined Algorithms of PAPR Reduction for OFDM System

作　　者：鲍文彬[1] 

机构地区：[1]南京工业大学信息科学与工程学院,江苏南京210006

出　　处：《通信技术》2011年第10期44-45,48,共3页Communications Technology

摘　　要：正交频分复用(OFDM,Orthogonal Frequency Division Multiplex)系统中,有很多降低峰均比(PAPR,Peak to Average Power Ratio)的方法,部分传输序列算法(PTS)是其中的一个大类。研究了峰均功率比(PAPR)较高的原因,且着重研究了PTS算法的降低峰均比的效果,并给予仿真说明比较。在现有PARR降低算法的基础上,深入研究了改进的PTS算法与限幅算法之间的联合方法。比起获得同等优化的PTS-Clipping算法,改进PTS-Clipping算法降低了计算复杂度,工程实现简单,具有一定的实用价值。In OFDM system exist many methods for reduction of PAPR,and the partial transmit sequence method（PTS） is one of the major categories.This paper discusses the reason for a fairly high peak-to-average-power ratio（PAPR）,focuses on the results of PTS PAPR reduction algorithm,and gives the simulation and comparison descriptions.Based on the existing PARR reduction algorithm,an in-depth study on the combined algorithm of the improved PTS algorithm and the clipping algorithm.Experiment indicates that the improved PTS-Clipping algorithm could reduce computing complexity,and is simple in engineering and is of certain practical value.

关 键 词：峰均比 部分传输序列算法 联合算法 仿真 

分 类 号：TN925.1[电子电信—通信与信息系统]