基于NOMA的认知卫星-无人机-地面融合网络遍历容量分析  

Ergodic capacity of cognitive integrated satellite⁃UAV⁃terrestrial network based on NOMA

作　　者：刘瑞 朱诗兵 郭蕴欣 陈昊宇 李长青 LIU Rui;ZHU Shibing;GUO Yunxin;CHEN Haoyu;LI Changqing(School of Space Information,Space Engineering University,Beijing 101416,China;Beijing Space Information Relay Research Centre,Beijing 100016,China;China Academy of Launch Vehicle Technology,Beijing 100076,China)

机构地区：[1]航天工程大学航天信息学院,北京101416 [2]北京空间信息中继研究中心,北京100016 [3]中国运载火箭技术研究院,北京100076

出　　处：《航天工程大学学报》2024年第2期90-96,共7页

基　　金：卫星信息智能处理与应用技术重点实验室(2022-ZZKY-JJ-20-02)。

摘　　要：为了解决卫星-无人机-地面融合网络(IntegratedSatellite-Unmanned Aerial Vehicle-Terrestrial Network,IS-UAV-TN)中的频谱短缺问题,引入非正交多址接入方案和认知无线电技术来提高IS-UAV-TN的频谱利用率,建立了一种基于非正交多址接入和认知无线电的IS-UAV-TN的系统模型,应用Meijer-G函数推导出主网络和次级网络遍历容量的精确表达式,并通过仿真验证了理论推导的正确性,同时分析了关键参数对系统性能的影响。In order to solve the spectrum shortage problem in the integrated satellite unmanned aerial vehicle terrestrial network(IS-UAV-TN),non-orthogonal multiple access schemes and cognitive radio technology are introduced to improve the spectrum utilization of IS-UAV-TN.A system model of IS-UAV-TN based on non-orthogonal multiple access and cognitive radio was established,and then the Meijer-G function was applied to derive accurate expressions for the traversal capacity of the main and sec-ondary networks.In addition,the correctness of theoretical derivation was verified through simulation,and the impact of key parameters on system performance was analyzed.

关 键 词：卫星-无人机-地面融合网络 非正交多址接入 认知无线电 遍历容量 

分 类 号：TN927[电子电信—通信与信息系统]