摘要
正交频分复用(OFDM)是第四代移动通信系统的核心技术之一,但它存在峰均比(PAPR)过高的问题。文中介绍了峰均比的定义及其分布,简述了降低峰均比的三类方法,着重介绍了选择性映射(SLM)方法和解决其运算复杂度较高的方案。
Orthogonal Frequency Division Multiplexing （OFDM） is one of the key techniques of 4G. However, the main disadvantage of OFDM is the high peak-to-average power ratio （PAPR）.This paper introduces the definition of PAPR and its distribution, describes three techniques for PAPR reduction, The main point is the SLM and the method for reducing the complexity of SLM.
出处
《中国新通信》
2008年第13期11-13,14,共4页
China New Telecommunications
