OFDM系统中峰值功率问题的研究  

On the peak power problem of orthogonal frequency division multiplexing(OFDM) system

作　　者：王锦毅[1] 

机构地区：[1]福建师范大学协和学院信息技术系,福建福州350007

出　　处：《福建工程学院学报》2010年第1期68-73,共6页Journal of Fujian University of Technology

基　　金：福建省教育厅B类科技/社科研究项目(JB09086)

摘　　要：介绍了OFDM系统的基本原理,并对OFDM系统的峰值功率问题进行研究分析,提出了评估峰值功率的几种算法,以及控制峰值功率问题的2种解决方法:使用块编码方式和相位偏移方法,并且通过模拟和理论分析对这2种方法进行比较。结果表明,相位偏移方式比分组编码方式的CDF性能更好。The basic idea of orthogonal frequency division multiplexing （OFDM） system was introduced. A peak power problem of OFDM system was studied. Several algorithms for evaluating peak power were presented. Two methods of controlling peak power were provided, which were block code method and phase shifting method. The performance of the two methods were compared through simulation and theoretical analysis. It is indicated that the phase shifting method is superior to the block code method.

关 键 词：正交频分复用OFDM 峰均功率比PAPR Chi—square分布(卡方分布) 

分 类 号：TN92[电子电信—通信与信息系统]