空间信息网的Ka频段非正交多址接入中继系统  

Ka-band Non-Orthogonal Multiple Access relay system for spatial information networks

作　　者：王春华[1] 王莹莹[2] 王佳宁 白涛 孙洋 WANG Chun-hua;WANG Ying-ying;WANG Jia-ning;BAI Tao;SUN Yang(The 91411 Unit of PLA,Dalian 116041,Liaoning Province,China;College of Intelligent Systems Science and Engineering,Harbin Engineering University,Harbin 150001,China;Faculty of Mechatronic Engineering,Harbin Engineering University,Harbin 150001,China)

机构地区：[1]中国人民解放军91411部队,辽宁大连116041 [2]哈尔滨工程大学智能科学与工程学院,哈尔滨150001 [3]哈尔滨工程大学机电工程学院,哈尔滨150001

出　　处：《信息技术》2024年第11期167-172,共6页Information Technology

摘　　要：针对深空通信的系统信息传输效率低,时延长的问题,文中设计一种空间信息网的Ka频段非正交多址接入中继系统,推导出中继卫星配备单天线情况下的中断概率和遍历系统容量等关键指标的解析表达式,提出的非正交多址接入中继系统在节约一半传输时间条件下,达到与正交多址接入系统相同遍历系统容量时所需的功率分配方案。通过仿真,验证了该方案的可行性。To solve the problem of low system information transmission efficiency and prolongation of deep space communication,this paper designs a Ka-band Non-Orthogonal Multiple Access(NOMA)relay system for spatial information network,derives the analytical expression of key indicators such as interruption probability and traversal system capacity when the relay satellite is equipped with a single antenna,and proposes the power allocation scheme required for the NOMA relay system to achieve the same traversal system capacity as the orthogonal multiple access system under the condition of saving half the transmission time.Through simulation,the feasibility of the scheme is verified.

关 键 词：非正交多址接入 地月通信 信道估计 信噪比 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]