5G系统中随机接入基带信号生成算法的研究与FPGA实现  

RESEARCH AND FPGA IMPLEMENTATION OF RANDOM ACCESS BASEBAND SIGNAL GENERATION ALGORITHM IN 5G SYSTEM

作　　者：廖学富 席兵[1] 邓炳光[1] 张治中 Liao Xuefu;Xi Bing;Deng Bingguang;Zhang Zhizhong(School of Communication and Information Engineering,Chongqing University of Posts and Telecommunications,Chongqing 400065,China;School of Electronics and Information Engineering,Nanjing University of Information Science and Technology,Nanjing 210044,Jiangsu,China)

机构地区：[1]重庆邮电大学通信与信息工程学院,重庆400065 [2]南京信息工程大学电子与信息工程学院,江苏南京210044

出　　处：《计算机应用与软件》2024年第11期181-187,共7页Computer Applications and Software

基　　金：国家重点研发计划项目(2018YFB2100200);重庆市技术创新与应用发展专项重大主题专项(cstc2019jscx-zdztzxX0002)。

摘　　要：针对5G随机接入基带信号生成算法计算量大且难以实现的问题,提出一种分组交织的随机接入基带信号生成算法。将基带信号生成过程中的大点数离散傅里叶逆变换(Inverse Discrete Fourier Transformation,IDFT)划分成多组小点数快速傅里叶逆变换(Inverse Fast Fourier Transform,IFFT)分别乘以对应的修正系数,对各小组数据进行IFFT运算和交织。仿真表明,该算法与直接使用IDFT生成的信号之间均方误差仅为1.66×10^(-32),且相较于传统算法,算法复杂度更低。在FPGA平台上验证了该方案的可行性和有效性。Aimed at the problem that the 5G random access baseband signal generation algorithm is computationally intensive and difficult to implement,a packet-interleaved random access baseband signal generation algorithm is proposed.The large-point inverse discrete Fourier transform(IDFT)during baseband signal generation was divided into multiple sets of small point inverse fast Fourier transforms(IFFT)multiplied by the corresponding correction coefficients,and IFFT operation and interleaving were performed on each group data.Simulation results show that the mean square error between the proposed algorithm and the signal generated directly using IDFT is only 1.66×10^(-32),and this method has lower complexity compared with traditional algorithms.The feasibility and effectiveness of the scheme is verified on the field programmable gate array(FPGA)platform.

关 键 词：随机接入 基带信号生成 分组交织算法 IDFT/IFFT FPGA 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术] TN929.5[电子电信—通信与信息系统]