基于扩展加权分数阶傅里叶变换的移动通信系统研究  

Research on mobile communication system based on extended weighted-type fractional Fourier transform

作　　者：赵子涛 宋志群[1] 倪嘉昊 房宵杰 沙学军[2] ZHAO Zitao;SONG Zhiqun;NI Jiahao;FANG Xiaojie;SHA Xuejun(The 54th Research Institute of CETC,Shijiazhuang 050000,China;School of Electronics and Information Engi-neering,Harbin Institute of Technology,Harbin 150001,China)

机构地区：[1]中国电子科技集团公司第五十四研究所,石家庄050000 [2]哈尔滨工业大学电子与信息工程学院,哈尔滨150001

出　　处：《北京交通大学学报》2022年第2期108-117,共10页JOURNAL OF BEIJING JIAOTONG UNIVERSITY

基　　金：河北省重点研发计划(20370402D)。

摘　　要：基于扩展加权分数阶傅里叶变换(Extended Weighted-type Fractional Fourier Transform,EWFRFT)的两分量信号是一种新的信号形式,具备抗信道衰落的能力,但缺乏更多角度讨论和理论分析.首先对线性处理的两分量信号性能进行深入分析,提出用最大似然检测和连续干扰消除算法解调两分量信号,分别以不同研究角度对这两种算法的作用进行了理论解释.通过两分量信号通信系统中接收处理算法的讨论,丰富了两分量信号的接收处理方法 .仿真结果表明:所提方法提高了两分量信号通信的可靠性.The double-component signal based on the Extended Weighted-type Fractional Fourier Transform(EWFRFT) is a novel transmition scheme with anti-fading ability. However, thorough discussions and deeper theoretical analyses are barely reported. This paper further conducts in-depth analysis on the linear processing method in double-component scheme. In addition, the maximum likelihood detection and successive interference cancellation algorithm are proposed in the demodulation of double-component signal, and their theoretical mechanism are demonstrated from different perspectives. By analysis of multiple receiving and processing algorithms for double-component signal transmission, this paper enriches the receiving techniques of double-component scheme, and simulation results show that the proposed method improves the reliability of double-component signal transmission.

关 键 词：扩展加权分数阶傅里叶变换 抗衰落技术 两分量信号 信号检测 

分 类 号：TN92[电子电信—通信与信息系统]