一种降低IEEE802.11g信号峰均比的方法  

A PAPR reduction scheme in the IEEE 802.11g

作　　者：樊瑶[1] 卢光跃[1] 

机构地区：[1]西安邮电大学通信与信息工程学院,陕西西安710121

出　　处：《西安邮电学院学报》2013年第2期66-69,共4页Journal of Xi'an Institute of Posts and Telecommunications

基　　金：国家科技重大专项基金资助项目(2012ZX03001025-004)

摘　　要：对选择性映射与部分序列传输在正交频分复用系统中的应用进行研究,提出一种改进算法,利用部分序列传输中交织分割运算量小的特点,结合交织分割与相邻分割,构造一种伪随机序列以降低系统的峰均比。链路级仿真实验结果表明伪随机序列算法能够有效降低系统峰均比,并且满足IEEE802.11g标准对谱掩膜的规定。By studying the application of selected mapping and partial transmit sequence techniques in orthogonal frequency division multiplexing systems, a novel method is proposed. Taking the advantage of the interleaved partitioning＇s lower complexity in partial transmit sequence, and using the adjacent partition and the interleaved partition techniques, the proposed method can construct a pseudo random sequence whose peak-to-average power ratio（PAPR） is reduced. Link level-simulation results show that the transmitted signal in the proposed method has a better PAPR distribution and meets the demand of transmit spectrum mask defined in the IEEE 802.11g standard.

关 键 词：正交频分复用(OFDM) 峰均比(PAPR) 部分序列传输(PTS) 伪随机算法 

分 类 号：TN929.5[电子电信—通信与信息系统]