降低OFDM峰均比的压扩变换方法研究  

Research on the Companding Method for PAPR Reduction of OFDM Signal

作　　者：宋友凯[1] 侯文君[1] 孙小东[1] 卢卫[2] 

机构地区：[1]海军航空工程学院 [2]中国人民解放军91006部队

出　　处：《无线电通信技术》2012年第5期26-28,共3页Radio Communications Technology

摘　　要：基于压扩变换的OFDM信号PAPR抑制方法具有实现简单、抑制效果明显的优点。对现有压扩变换PAPR抑制方法进行了分析和研究,并在此基础上,提出了一种基于均匀分布的压扩变换方法。该方法能够将任何分布的调制信号均变为均匀分布。仿真结果表明,与现有方法相比,该方法抑制PAPR的效果较为明显,且易于实现,具有较好的实用性。The PAPR Reduction method for OFDM signal based on companding transform is easy to implement and can reduce the PAPR effectively.In this paper,the papr reduction method based on companding transform was studied and analysed.Based on this,a novel companding transform based on uniform distribution was proposed.The method can transform modulated signals to signals with uniform distribution.Simulation results show that comared with existing methods,the method can reduce PAPR effectively with low implementation complexity.

关 键 词：正交频分复用 峰均功率比 压扩变换 均匀分布 

分 类 号：TN914.5[电子电信—通信与信息系统]