面向5G广播的传输参数快速预测方法  

Fast Prediction Method of Transmission Parameters for Broadcasting System Via 5G Network

作　　者：胡睿 HU Rui(Technology Bureau of China Media Group,Beijing 100026,China)

机构地区：[1]中央广播电视总台技术局,北京100026

出　　处：《数字通信世界》2022年第6期10-13,共4页Digital Communication World

摘　　要：第五代移动通信技术(5G)为广电媒体融合发展提供了所需的技术支持,被广泛应用于广电行业,使广电媒体发生很大变化。毫米波大规模多输入多输出(MIMO)作为5G的一项核心技术,其通信系统性能的提升依赖于信道参数信息,因此实现精确的信道参数估计至关重要。考虑单小区毫米波大规模多用户MIMO广播系统,文章利用毫米波信道的稀疏散射特性和系统丰富的空时频等维度资源,提出了一种快速信道估计方法。该方法运用前后平滑和酉变换技术来构建实值多维信号模型,并借助拟合方法实现信道参数估计。测试结果表明,该方法提供了比现有方法更高的参数估计精度和更低的计算复杂度。The fifth generation mobile communication technology(5G)provides the necessary technical environment support for the integrated development of radio and television media.It is widely used in various applicatoins of radio and television media,which has made fundamental changes in radio and television media.Millimeter wave large-scale multiple input multiple output(MIMO)is a core technology of 5G.The improvement of its communication system performance depends on the channel parameter information,so it is very important to make accurate channel parameter estimation.Considering the single cell millimeter wave large-scale multi-user MIMO broadcasting system,a fast channel estimation method is proposed by using the sparse scattering characteristics of millimeter wave channel and the enough space-time frequency and other dimensional resources of the system.This method uses forward and backward smoothing and unitary transformation technology to build a real valued multi-dimensional signal model,and uses the fitting method to estimate the channel parameters.The test results show that the proposed method provides higher parameter estimation accuracy and lower computational complexity than the existing methods.

关 键 词：毫米波 MIMO系统 多维信号模型 信道参数 估计精度 

分 类 号：TN929.53[电子电信—通信与信息系统] TN94[电子电信—信息与通信工程]