一种基于傅里叶矩阵的多路信号调制方法  

A method of multi-channel modulation using Fourier matrix

作　　者：胡轶男[1] 陶成[1] 刘留[1] 

机构地区：[1]北京交通大学宽带无线移动通信研究所,北京100044

出　　处：《太赫兹科学与电子信息学报》2015年第4期574-578,600,共6页Journal of Terahertz Science and Electronic Information Technology

摘　　要：随着通信干扰技术迅速发展,多信道干扰技术备受瞩目。为了方便、高效地产生多路调制干扰信号,提出了一种利用傅里叶矩阵实现多路信号调制的方法。该方法首先构建一个二维方阵,该矩阵的维数与系统的采样率和信号的时间长度相关,各行元素由多路待调制信号决定。将该矩阵与傅里叶矩阵做乘法,运算结果的对角线元素就是多路已调制信号。相比于传统方法,该方法无需生成多路载波再依次调制各路信号,简单方便。此外基于通信干扰系统,搭建了一套实际系统对该方法进行了原理仿真及实际性能测试,结果表明该方法切实可行。With the rapid development of communication jamming technology, multi-channel jamming technology has attracted much attention. A method of multi-channel modulation by using Fourier matrix is proposed in order to produce multi-channel modulated jamming signal efficiently. Firstly, a twodimensional square matrix is built, whose dimension depends on the system sampling rate and the duration of the signal. The elements of each line are determined by the signals to be modulated. The square matrix is multiplied by Fourier matrix, and the diagonal elements of the result form the multi-channel modulated signal. Compared with traditional method, the proposed one is simple, flexible and efficient for it is unnecessary to generate multiple-carrier to modulate the corresponding signals. In addition, a practical system is set up based on the communication jamming system, to perform the principle simulation and the practical performance tests. The results show that the method is feasible.

关 键 词：傅里叶矩阵 多路信号调制 采样率 对角线元素 

分 类 号：TN911.3[电子电信—通信与信息系统]