广义频分复用系统峰均功率比抑制算法  

Peak-to-average power ratio reduction algorithm in generalized frequency division multiplexing system

作　　者：宁晓燕[1] 刘承赟 谌星宇 王震铎 NING Xiaoyan;LIU Chengyun;CHEN Xingyu;WANG Zhenduo(College of Information and Communication Engineering,Harbin Engineering University,Harbin 150001,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

出　　处：《哈尔滨工程大学学报》2024年第4期794-799,共6页Journal of Harbin Engineering University

基　　金：国家自然科学基金项目(62001138);黑龙江省自然科学基金项目(LH2021F009).

摘　　要：为了降低广义频分复用系统存在着多载波系统中固有的高峰均功率比问题,本文提出了一种适用于广义频分复用系统的子载波抑制高峰均功率比算法。该算法以限幅法为基础,降低了系统的高峰均功率比,但与限幅法不同的是,该算法几乎不会对带外性能及误码率性能造成影响。由于子载波抑制高峰均功率比算法的峰均功率比抑制性能略差于限幅法,因此本文进一步提出将部分序列传输与子载波抑制高峰均功率比结合来进一步抑制系统高峰均功率比的算法。仿真表明:本文提出的算法的高峰均功率比抑制性能与限幅法相同,且不会对系统的带外与误码率性能造成影响。To reduce the inherent peak-to-average power ratio(PAPR)problem in a generalized frequency division mul-tiplexing(GFDM)system,this study proposes the PAPR reduction subcarrier(PRSC)algorithm,which is suitable for the GFDM system.Building upon the clipping algorithm,the proposed algorithm reduces the PAPR of the GFDM sys-tem.Different from the clipping algorithm,the PRSC algorithm minimally affects out-of-band and bit error rate perform-ance.As the PAPR suppression performance of the PRSC algorithm is slightly worse than that of the clipping algorithm,this study also proposes an algorithm that combines partial transmit sequence and PRSC to further reduce the PAPR of the system.The simulation results show that this combined algorithm achieves the same level of PAPR reduction as the clipping algorithm,and the out-of-band and bit error rate performance of the system are unaffected.

关 键 词：广义频分复用 高峰均功率比 限幅法 子载波抑制峰均功率比 复杂度 部分传输序列法 带外 误码率 

分 类 号：TN911.7[电子电信—通信与信息系统]