基于信道状态智能预测的星地自适应调制编码技术研究  

Research on satellite-ground adaptive modulation and coding techniques based on intellgent prediclion of channel state

作　　者：季铄 孙耀华 彭木根[1] JI Shuo;SUN Yaohua;PENG Mugen(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全国重点实验室,北京100876

出　　处：《电信科学》2024年第10期1-13,共13页Telecommunications Science

摘　　要：在手机直连低轨卫星场景中,针对自适应调制编码技术依赖的信道质量指示信息非实时反馈的问题,提出一种基于深层回声状态网络的信道状态预测模型,并根据该预测模型提出一种调制编码方式智能选择机制,即发送端基于信道预测结果选择适应当前信道的调制编码方式。仿真验证表明,基于信道预测的自适应调制编码可以在一定程度上提升链路的误码性能。In the scenario of direct mobile phone connection to low-earth orbit satellites,to address the issue of non-real-time feedback of channel quality indication information that adaptive modulation and coding techniques rely on,a channel state prediction model based on deep echo state network was proposed.Furthermore,an intelligent selection mechanism for modulation and coding schemes was introduced based on the prediction model,wherein the transmitter selects the modulation and coding scheme suited for the current channel conditions based on the channel prediction results.Simulation validation has demonstrated that adaptive modulation and coding based on channel prediction can improve the bit error performance of the link to a certain extent.

关 键 词：低轨卫星通信 信道状态预测 自适应调制编码 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]