摘要
卫星技术的发展推动低轨卫星星群化的不断加深,低轨卫星网络可以为全球数据传输提供支持。当前卫星通信水平不断提升,数字化与低成本化是卫星通信需要达到的理想目标,采用LEO卫星等非地球同步轨道卫星具有较小的传播时延,通过对地面移动通信协议体制改进可以使卫星为地面移动终端服务。文章研究了低轨卫星通信网络结构与算法,介绍了HARQ技术类型,分析了基于低密度奇偶校验码的HARQ方案,探讨了如何将HARQ技术拓展以适用于低轨卫星通信网络。
The development of satellite technology promotes the deepening of low orbit satellites,and low orbit satellite networks can support global data transmission.At present,the level of satellite communication is constantly improving,and digitalization and low cost are the ideal goals for satellite communication to achieve.The use of nongeosynchronous orbit satellites such as LEO satellites has a small transmission delay.Through the improvement of the ground mobile communication protocol system,the satellite can serve the ground mobile terminals.This paper studies the structure and algorithm of low orbit satellite communication network,introduces the type of HARQ technology,analyzes the HARQ scheme based on low density parity code,and discusses how to expand HARQ technology to the low orbit satellite communication network.
作者
李想
LI Xiang(The 54th Research Institute of China Electronics Technology Group Corporation,Shijiazhuang 050081,China)
出处
《数字通信世界》
2023年第8期105-107,135,共4页
Digital Communication World
关键词
低轨卫星通信网络
HARQ技术
信息工程
Low orbit satellite communication network
HARQ technology
Information Engineering
作者简介
李想(1970-),男,汉族,广西桂平人,高级工程师,本科,主要研究方向为卫星通信系统。
