考虑传输损耗的无线通信毫米波信道建模分析  

Modeling and Analysis of Wireless Communication Millimeter Wave Channel Considering Transmission Loss

作　　者：南作用 钟志刚[1] 陈任翔 王亚 NAN Zuo-yong;ZHONG Zhi-gang;CHEN Ren-xiang;WANG Ya(Zhongxun Post and Telecommunications Consulting and Design Institute,China Unicom,Zhengzhou Henan 450000,China)

机构地区：[1]中讯邮电咨询设计院有限公司,中国联通,河南郑州450000

出　　处：《计算机仿真》2025年第2期531-535,共5页Computer Simulation

基　　金：北京市科技计划项目(Z211100004581010)。

摘　　要：与中低频无线信道相比,毫米波无线信道的路径损耗更高,更容易受环境中散射体的影响,使得传输信号的稳定性和传输速率受到极大限制。为更好地推进毫米波无线通信建设和加速网络部署应用,以5G无线通信系统为对象,构建了一种新的多频段毫米波信道模型。根据5G无线通信结构,分析多频段毫米波信道多径效应特征,并计算信道冲击响应时延,为信号的传输提供准确的时延补偿;利用波束成形技术定焦处理多径离散化波束,通过调整波束的方向和形状,能够减少信号的传输损失和干扰;计算多路径直达、反射时延扩展造成的传输损耗,再分别采用波束成形技术、反射器优化的方式降低传输损耗,从而构建直射信道、反射信道模型,针对不同的传输场景选择合适的传输策略,提高信号的稳定性。实验结果表明:上述模型能够提高传输信号的稳定性,最大传输速率可达到1000Gbps。Compared with medium and low-frequency wireless channels,millimeter wave wireless channels have higher path loss and are more vulnerable to the influence of scatterers in the environment,which greatly limits the stability and transmission rate of transmission signals.In order to better promote the construction of millimeter wave wireless communication and accelerate the deployment and application of networks,a new multi-band millimeter wave channel model is constructed for the 5G wireless communication system.According to the 5G wireless communication structure,the multipath effect characteristics of multi-band millimeter wave channels are analyzed,and the channel impulse response delay is calculated to provide accurate delay compensation for signal transmission.The beam forming technology is used to focus the multipath discrete beam.By adjusting the direction and shape of the beam,the signal transmission loss and interference can be reduced.The transmission loss caused by multipath direct,reflected,and delayed extensions is calculated,and beamforming techniques and reflector optimization are applied to lower transmission loss,thereby constructing direct and reflected channel models.Suitable transmission strategies are selected for different transmission scenarios to enhance signal stability.The experimental results show that the above model can improve the stability of the transmission signal,and the maximum transmission rate can reach 1000Gbps.

关 键 词：无线通信 多频段毫米波 信道模型 多径效应 

分 类 号：TN928[电子电信—通信与信息系统]