低轨卫星通信中的波束跳变和频率复用方法研究  

Study on beam hopping and frequency reuse in LEO satellite communication

作　　者：王瀚萱 陈子博 孙耀华 Wang Hanxuan;Chen Zibo;Sun Yaohua(State Key Laboratory of Networking and Switching Technology,Beijing University of Posts and Telecommunications,Beijing 100876,China)

机构地区：[1]北京邮电大学网络与交换技术国家重点实验室,北京100876

出　　处：《电子技术应用》2023年第5期24-29,共6页Application of Electronic Technique

基　　金：国家重点研发计划项目(2022YFB2902600);北京市新一代信息通信技术创新项目(Z211100004421017);国家自然科学基金项目(61925101,61921003,61831002,62001053);中国通信学会青年人才托举项目(2021QNRC001)。

摘　　要：面向广域非均匀分布的业务需求,在多低轨卫星移动波束覆盖场景下,联合考虑跳波束图案设计、波束频率分配和传输功率优化,提出基于改进粒子群算法的波束资源管理机制,通过系统级仿真平台进行了性能验证。仿真结果表明,相比基于空间隔离角和基于优先级的波束资源管理机制,在full buffer业务模型下,所提机制可显著提升用户信干噪比和系统容量,且频率复用因子越低系统容量越高。Facing wide-area and non-uniformly distributed service requirements,this paper proposes a beam resource management scheme based on improved particle swarm optimization,which considers the joint optimization of beam hopping pattern design,beam frequency allocation and power allocation,in the scenario of multiple LEO satellites with moving beam cells.By system-level simulation,its performance is verified.Specifically,compared with beam resource management schemes based on spatial isolation angle and priority,results show that this proposal can significantly improve user SINR and system capacity under full-buffer service model, and lower frequency reuse factor results in higher system capacity.

关 键 词：低轨卫星 跳波束 频率复用 

分 类 号：TN929.5[电子电信—通信与信息系统]