一种次优PTS-WHT联合峰均比抑制算法  

A suboptimal PTS-WHT joint algorithm for PAPR suppression

作　　者：孙乾乾 陈斌杰 赵健博 SUN Qianqian;CHEN Binjie;ZHAO Jianbo(College of Information and Communication Engineering,Harbin Engineering University,Harbin 150001,China;Beijing Institute of Remote Sensing Equipment,Beijing 100854,China)

机构地区：[1]哈尔滨工程大学信息与通信工程学院,黑龙江哈尔滨150001 [2]北京遥感设备研究所,北京100854

出　　处：《应用科技》2020年第5期41-44,52,共5页Applied Science and Technology

基　　金：国家自然科学基金项目(61571146).

摘　　要：针对正交频分复用(OFDM)系统的峰值均值功率比(PAPR)过高的问题,对次优部分传输序列算法进行了改进。本文提出了一种联合次优部分传输序列(PTS)与沃尔什哈达玛变换(WHT)算法。该算法通过次优PTS算法对OFDM输入信号进行WHT变换,降低了信号的自相关性,提升了算法抑制PAPR的性能。仿真结果表明,相比次优PTS算法,联合算法在相同分组数情况下,PAPR性能提升了0.6 dB。在相近PAPR性能条件下,联合算法的运算复杂度远远低于次优PTS算法。In order to solve the problem of high peak-to-average power ratio(PAPR)in orthogonal frequency division multiple(OFDM)system,the suboptimal partial transmission sequence(PTS)algorithm is improved in this study,using a suboptimal PTS and Walsh-Hadamard transform(WHT)joint algorithm.This algorithm reduces the autocorrelation of signal and improves the performance of PAPR suppression through WHT transformation of OFDM input signal in suboptimal PTS algorithm.Simulation results show that under the condition of the same group number,the performance of joint algorithm for PAPR suppression is improved by 0.6 dB compared with the suboptimal PTS algorithm.Under the condition of similar PAPR performance,the computational complexity of joint algorithm is far lower than that of suboptimal PTS algorithm.

关 键 词：正交频分复用 峰值均值功率比 部分传输序列 沃尔什哈达玛变换 联合算法 低复杂度 互补累计分布函数 自相关 

分 类 号：TN929.5[电子电信—通信与信息系统]