一种新的PSWF调制信号PAPR抑制方法  

A New PAPR Reduction Method for PSWF Orthogonal Modulation Signal

作　　者：毛忠阳[1,2,3] 陆发平 刘传辉[1,2] 康家方[1,2] 刘晓[1,2] MAO Zhong-yang LU Fa-ping LIU Chuan-hui KANG Jia-fang LIU Xiao(I.Department of Electrical and Information Engineering,Naval Aeronautical and Astronautical University,Yantai Shandoug 264001 ,China Key Laboratory on Signal ＆ Information Processing of Shandong Province,Yantai Shandong 264001, China China Electronic System Corp., Beijing 10014 l, China)

机构地区：[1]海军航空工程学院电子信息工程系,山东烟台264001 [2]山东省信号与信息处理重点实验室,山东烟台264001 [3]装备发展部第六十一研究所,北京100141

出　　处：《无线电通信技术》2017年第2期6-11,20,共7页Radio Communications Technology

基　　金：山东省"泰山学者"建设工程专项经费基金资助项目(ts20081130);中国博士后科学基金特别资助项目(2016T91018)

摘　　要：针对椭圆球面波(Prolate Spheroidal Wave Function,PSWF)时域正交调制信号峰均功率比(Peak-to-Average Power Ratio,PAPR)过高,易受功率放大器非线性特性影响,造成PSWF脉冲间良好正交性下降,导致系统解调性能下降的问题,引入A律压缩,提出了一种基于A律压缩的PSWF调制信号PAPR抑制方法。该方法能够有效抑制PSWF调制信号PAPR,改善经过功放后调制信号的功率谱和系统误码性能。A new companding transform based on A-law companding schemes is proposed for the reduction of Peak-to-Average Power Ratio（ PAPR） of Prolate Spheroidal Wave Function（ PSWF） orthogonal modulation signal,which causes serious degradation in performance when a nonlinear power amplifier（ PA） is used. Both the mathematical deduction and simulation result show that the proposed method can effectively reduce PAPR of PSWF orthogonal modulation signal,improve the power spectrum of the signal,and effectively improve the bit error rate performance of system.

关 键 词：椭圆球面波 峰均比 压扩算法 自适应 

分 类 号：TN911.7[电子电信—通信与信息系统]