A correlation OPTS algorithm for reducing peak to average power ratio of FBMC-OQAM systems  

作　　者：WANG Xing MA Tianming LI Fengrong ZHAO Qinghua 王星;MA Tianming;LI Fengrong;ZHAO Qinghua(School of Electrical and Electronic Engineering,Shanghai University of Engineering Science,Shanghai 201620,P.R.China;Laboratory of Broadband Wireless Technology,Shanghai Institute of Microsystem and Information Technology,Chinese Academy of Sciences,Shanghai 200050,P.R.China)

机构地区：[1]School of Electrical and Electronic Engineering,Shanghai University of Engineering Science,Shanghai 201620,P.R.China [2]Laboratory of Broadband Wireless Technology,Shanghai Institute of Microsystem and Information Technology,Chinese Academy of Sciences,Shanghai 200050,P.R.China

出　　处：《High Technology Letters》2022年第2期208-216,共9页高技术通讯（英文版）

基　　金：Supported by the National Natural Science Foundation of China(No.61601296,61701295,61801286);the Major Scientific and Technological Innovation Projects in Chengdu(No.2019-YF08-00082-GX);the Talent Program of Shanghai University of Engineering Science(No.2018RC43)。

摘　　要：A correlation overlapping partial transmit sequence(C-OPTS) algorithm is proposed to solve the issue of high complexity of overlapping partial transmit sequence(OPTS) algorithm in suppressing the peak to average power ratio(PAPR) of filter bank multicarrier-offset quadrature amplitude modulation(FBMC-OQAM) signals.The V subblocks in partial transmit sequence(PTS) are regrouped into U combinations according to the correlation coefficient p,and overlapping subblocks are allowed between adjacent groups.The search starts from the first group and sets the phase factors of the subsequent groups to 1.When the phase factors of the non-overlapping subblocks in the first group are determined,the subsequent groups are searched in turn to determine their respective phase factors.Starting from the second data block,the data overlapped with it should be taken into account when determining its optimal phase factor vector.Theoretical analysis and simulation results indicate that compared with the OPTS algorithm,the proposed algorithm can significantly reduce the computational complexity at the cost of slight deterioration of PAPR performance.Meanwhile,compared with the even-odd iterative double-layers OPTS(ID-OPTS) algorithm,it can further reduce the complexity and obtain a better PAPR suppression effect.

关 键 词：filter bank multicarrier(FBMC) offset quadrature amplitude modulation(OQAM) peak to average power ratio(PAPR) overlapping partial transmit sequence(OPTS) correlation coefficient 

分 类 号：TN929.5[电子电信—通信与信息系统]