太赫兹科学与电子信息学报2024，Vol.22Issue(4)：405-411,7.DOI:10.11805/TKYDA2022088
一种卫星物联网上行干扰分析高效计算方法
An efficient calculation method for satellite IoT uplink interference analysis
陆远松 1李伟 2魏文康 2刘子威 1张更新1
作者信息
- 1. 南京邮电大学 卫星通信研究所,江苏 南京 210003
- 2. 国家无线电监测中心,北京 100037
- 折叠
摘要
Abstract
As an important part of space information network,low-orbit satellite Internet of Things(IoT)has the problem of high complexity of interference calculation in interference analysis and coordination with other communication systems due to its proliferation of constellation size,dynamic satellite platform and large number of terminals.In addition,the distribution of IoT terminals in practice is highly correlated with geography and population,but due to the large coverage area of a single satellite,it will face multiple densities and deployments of terminals,and the use of static traversal calculations will bring an explosion of computing power.Starting from the mechanism of co-channel interference generation,the regionalized transmit field strength is used as the core of modeling the uplink aggregate interference of dense IoT terminals,and the Poisson Point Process(PPP)distribution model is introduced to equivalently model the ground terminals,so that the regionalized uplink aggregate interference is only related to the distribution parameters and transmit parameters,but not to the exact location and number of terminals.The simulation results show that the proposed method has less error compared with traditional link analysis,and has better fitting performance for different number of terminals.It can effectively reduce the computational complexity in long-time analysis,and can be used for interference analysis and calculation with high efficiency.关键词
低轨卫星物联网/泊松点分布/场叠加/干扰分析Key words
low-orbiting satellite IoT/Poisson point distribution/field superposition/interference analysis分类
信息技术与安全科学引用本文复制引用
陆远松,李伟,魏文康,刘子威,张更新..一种卫星物联网上行干扰分析高效计算方法[J].太赫兹科学与电子信息学报,2024,22(4):405-411,7.
