卫星自适应编码调制体制下传输模式研究  

Research on Transmission Mode under Satellite Adaptive Coding and Modulation System

作　　者：郝广凯 陆格格 雷鸣 陆卫强 汪思冒 HAO Guangkai;LU Gege;LEI Ming;LU Weiqiang;WANG Simao(Shanghai Institute of Aerospace Electronics Technology,Shanghai 201109,China)

机构地区：[1]上海航天电子技术研究所,上海201109

出　　处：《通信电源技术》2021年第23期6-8,共3页Telecom Power Technology

摘　　要：目前在轨的卫星数传系统都采用固定的编码调制方式,为了满足在最差的信道环境下可靠地数据传输,系统设计时留有充足的链路余量。自适应编码调制(Adaptive Coded and Modulation,ACM)技术是系统根据反馈的信道参数的变化情况自适应地改变数据的编码调制模式来匹配信道变化,该技术的应用可以更充分地利用信道资源,实现较高的信息传输速率及吞吐量。传输模式是自适应编码调制技术的基础,根据卫星数据传输信道特点,结合在轨应用基础,通过仿真分析确定了自适应编码调制体系的传输模式。At present,the satellite data transmission systems in orbit all adopt a fixed coding and modulation method.In order to meet the requirements of reliable data transmission in the worst channel environment,sufficient link margin is reserved in the system design.Adaptive Coding and Modulation(ACM)technology is that the system adaptively changes the coding and modulation mode of data according to the changes of the feedback channel parameters to match the channel changes.The application of this technology can make more full use of channel resources and achieve higher information transmission rate and throughput capacity.The transmission mode is the basis of the adaptive coding and modulation technology.According to the characteristics of the satellite data transmission channel and the basis of the on-orbit application,the transmission mode of the adaptive coding and modulation system is determined through simulation analysis.

关 键 词：自适应编码调制(ACM) 传输模式 卫星通信 

分 类 号：TN9[电子电信—信息与通信工程]