摘要
无线通信OFDM系统中的高峰均比(PAPR)是限制OFDM技术实用化的主要障碍。介绍了一些抑制OFDM系统中PAPR的主要方法:信号畸变技术、概率类技术、信号编码技术,并对其中几种常用的方法:如限幅法、压缩扩展法、SLM(选择映射法)、PTS(部分传输序列法)进行具体分析,使用Matlab对它们进行仿真比较,讨论各自存在的优缺点。
The high Peak - to - Average Power Ratio (PAPR) is the fault of the OFDM systems. Some methods for reducing PAPR in OFDM systems are introduced. Including signal aberrance technique, probability technique and coding technique. Making a particular analysis of some methods, such as amplitude clipping, companding, selected mapping, partial transmit sequence,and simulation for each one to discuss their virtues and shortcomings.
出处
《现代电子技术》
2009年第7期18-21,共4页
Modern Electronics Technique
基金
国家高科技研究发展计划(863项目)(2007AA12Z170)