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Alternative TitleDesign of a VCM-based satellite data transmission architecture for down-link efficiency enhancement
李炯卉; 熊蔚明; 梅凡; Li, Jionghui (jionghui@nssc.ac.cn)
Source Publication哈尔滨工业大学学报
Keyword可变编码调制 卫星数据传输 链路有效性 数传吞吐量 链路预算 流程设计
Other AbstractThe dynamic link budget of low earth orbit (LEO) satellite data transmission link is analyzed, and the mathematical model of link efficiency is discussed. In order to enhance the data transmission link performance for exploration satellites, Variable Coding Modulation (VCM) system is applied to reduce link resource waste and improve the satellite-ground transmission throughput without increasing power consumption and design cost. A VCM schedule designing algorithm is illustrated for optimizing link throughput within the data transmission period. For a satellite system with foreseeable orbit and based on its dynamic link budget results, the proposed algorithm selects variable coding modulation combination under the bit error rate requirement to fit the link budget curve and keep a relatively constant link margin to achieve optimal link efficiency. Finally, on the basis of the proposed algorithm, a VCM data transmission system is designed for a LEO sun-synchronous satellite. According to the simulation results, the remarkable advantage of the proposed method is proved by comparison with traditional constant coding modulation design. © 2016, Editorial Board of Journal of Harbin Institute of Technology. All right reserved.
Indexed ByEI ; CSCD
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Cited Times:2[CSCD]   [CSCD Record]
Document Type期刊论文
Corresponding AuthorLi, Jionghui (jionghui@nssc.ac.cn)
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GB/T 7714
李炯卉,熊蔚明,梅凡,等. 优化卫星数传链路效率的VCM流程设计[J]. 哈尔滨工业大学学报,2016,48(10):162-167.
APA 李炯卉,熊蔚明,梅凡,&Li, Jionghui .(2016).优化卫星数传链路效率的VCM流程设计.哈尔滨工业大学学报,48(10),162-167.
MLA 李炯卉,et al."优化卫星数传链路效率的VCM流程设计".哈尔滨工业大学学报 48.10(2016):162-167.
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