多场景卫星通信信道动态建模与仿真实现  

Dynamic modeling and simulation of multi-scenario satellite communication channels

作　　者：何遵文[1] 杜川 张焱[1] 顾霖昊 张万成 HE Zunwen;DU Chuan;ZHANG Yan;GU Linhao;ZHANG Wancheng(School of Information and Electronics,Beijing Institute of Technology,Beijing 100081,China)

机构地区：[1]北京理工大学信息与电子学院,北京100081

出　　处：《电波科学学报》2023年第1期87-95,共9页Chinese Journal of Radio Science

基　　金：国家重点研发计划(2020YFB1804901);国家自然科学基金(62271051)。

摘　　要：面向智慧海洋、智慧农业等垂直行业场景的广覆盖无线接入需求,低轨卫星通信因其可靠的连接性、更宽广的覆盖能力以及超大带宽连接的巨大潜力而成为了下一代移动通信技术的重要组成部分.目前,针对低轨卫星通信的系统性信道建模流程与仿真方法仍相对匮乏,对于低轨卫星信道的高动态特性仍缺乏有效的建模方法,且大多模型仅能支持单场景通信环境.基于此,本文提出了一种模块化、高动态的多场景卫星通信信道建模机制,并据此设计实现了一套动态卫星信道建模仿真系统.该系统实现了流程化的建模思路,并引入了基于卫星信道高动态特性的动态参数更新方法.所设计的卫星通信信道建模与仿真机制能够生成卫星通信的信道大、小尺度参数与信道冲激响应,且对不同场景具有较好的适用性.In the face of wireless access needs with wide coverage under vertical industries like intelligent ocean and intelligent agriculture,low earth orbit(LEO)satellite communication has become an essential part of the nextgeneration mobile communication technology due to its reliable connectivity,wider coverage capability and great potential for wide band connection.There is still a lack of systematic channel modeling procedures and simulation methods for LEO mobile communications and the modeling of the highly dynamic characteristics of LEO satellite channels,also,only single scenario is considered in most up to date models.Based on this,it proposes a modular and highly dynamic satellite communication channel modeling mechanism with versatile scenarios in this paper,and accordingly designs and develops a dynamic satellite channel simulation system.The idea of process-oriented is realized in the proposed simulation system,also the dynamic update methods for wireless channel parameters in view of the dynamic feature of satellite channel is introduced.The channel model designed in this paper can obtain channel parameters and the channel impulse response of LEO satellite communication channel by means of simulation,and it also has good compatibility for different scenarios.

关 键 词：卫星通信 信道建模 信道仿真 动态参数更新 多场景 下一代移动通信 

分 类 号：TN927.21[电子电信—通信与信息系统]