基于DVB_S2X标准的自适应传输控制技术  

Adaptive Transmission Control Technology Based on DVB_S2X Standard

作　　者：李欣 陈少峰[1] LI Xin;CHEN Shaofeng

机构地区：[1]中国电子科技集团公司第二十研究所,西安710068

出　　处：《现代导航》2021年第5期367-373,共7页Modern Navigation

基　　金：“陕西省2021年重点研发计划”项目(2021GY-045)资助。

摘　　要：针对天地一体化信息网络中星地间高速、高效数据自适应传输需求,在宽带卫星通信DVB_S2X标准的基础之上,开展高效自适应传输控制技术研究,包括高精度信道估计、低延时信道状态预测与自适应编码调制选择切换策略等关键技术,满足自适应编码调制技术(ACM)的使用要求。并完成典型模拟环境下高效自适应传输控制技术的测试验证,为后续宽带通信卫星系统、星地高速数据传输系统以及天地一体化信息网络的构建奠定技术基础。实验结果表明,该方法可以在不同信道条件下都保持最大的传输效能,大幅度提高系统的频谱效率和数据吞吐量。In response to the high-speed,efficient data adaptive transmission requirements of Space-Earth Integration Network,high-efficiency adaptive transmission control technology is carried out on the basis of broadband satellite communication DVB_S2X standard.It includes high precision channel estimation,low delay channel status prediction and adaptive coding modulation selection switching strategy,to meeting the requirements of adaptive coding modulation technology(ACM).Test verification of efficient adaptive transmission control technology in a typical simulation environment,laying the technical foundation for the construction of subsequent broadband communication satellite systems,star high-speed data transmission systems,and Space-Earth Integration Network.The experimental results show that the method can maintain maximum transmission performance under different channel conditions,greatly improve the spectral efficiency and data throughput.

关 键 词：信道估计 DVB_S2X 自适应编码调制 信道状态预测 

分 类 号：TN966[电子电信—信号与信息处理]