摘要
针对物联网无线通信场景,建立了一种基于几何传输特性的非平稳信道模型。通过改变模型参数,提出的信道模型能够描述多种参数配置的物联网无线通信环境。通过推导信道的复冲激响应函数表达式,揭示信道在不同参数配置下的物理特性。此外,数值推导直达传输路径/非直达传输路径的空间互相关特性,探索了移动散射簇的运动时间/方向/速度对物联网传输特性造成的影响。通过将仿真结果与理论结论进行比较,验证上述信道传输特性仿真结果的正确性,对设计物联网无线通信系统性能提供重要的理论依据和技术支撑。
This paper proposes a geometry-based non-stationary channel model for wireless communication in Internet of Things(IoT). By properly adjusting the model parameters, the proposed model can describe a variety of communication environments for IoT. The physical properties of the proposed channel model are characterized by deriving the expressions of the complex impulse responses. Further, the spatial cross-correlation functions of the direct transmission path/non-direct transmission path are deduced and used to investigate the influences of the moving time/direction/velocity of the cluster on the propagation features of IoT. Numerical results of the channel characteristics fit the theory results well, which validates that the propagation characteristics of the proposed channel model. This model provides an important theoretical foundation and technical support for the design of the communications systems of IoT.
作者
秦剑华
路永玲
王真
胡成博
QIN Jianhua;LU Yongling;WANG Zhen;HU Chengbo(State Grid Jiangsu Electric Power Company Research Institute,Nanjing 211103,China)
出处
《南京邮电大学学报（自然科学版）》
北大核心
2022年第4期30-36,共7页
Journal of Nanjing University of Posts and Telecommunications：Natural Science Edition
基金
国网江苏省电力有限公司科技项目(JF2021002)资助项目。
关键词
物联网
非平稳信道模型
传输特性
空间互相关特性
Internet of Things(IoT)
non-stationary channel model
transmission characteristics
spatial cross-correlation characteristics
