空间信息网络多星多波束高效协同传输技术研究

项目名称： 空间信息网络多星多波束高效协同传输技术研究

项目编号： No.91338101

项目类型： 重大研究计划

立项/批准年度： 2014

项目学科： 无线电电子学、电信技术

项目作者： 匡麟玲

作者单位： 清华大学

项目金额： 85万元

中文摘要： 以静止轨道高容量卫星为核心的空间信息网络基础设施正在蓬勃发展，在有限的静止轨道资源与频率资源约束下，卫星间的多星干扰和多波束干扰已成为限制空间信息网络中核心节点传输性能的关键因素。目前以时空频规划的方式避免干扰的传统技术措施已接近工程极限，未来急需从根本上突破高效干扰处理理论和技术，综合解决空间信息网络中多星多波束系统传输面临的用户覆盖广、相互干扰重和功率资源少等问题。面向我国空间信息网络多星多波束系统高效传输的实际需求，重点解决多星多波束系统协同传输的问题，在多星多波束干扰分析与建模的基础上，开展低复杂度的多波束联合处理技术研究，同时解决高精度、低开销的信道估计和同步技术难题，形成创新的解决方案和关键算法，并构建原型验证平台，为我国空间信息网络基础设施的建设和应用提供理论基础和技术支撑。

中文关键词： 空间信息网络；卫星通信；多波束；联合处理；信道估计

英文摘要： The Space Information Network based on High Throughput Satellite is booming. Due to the limited orbit and frequency resources for geostationary satellites, the multi-satellite and multi-beam interference becomes the key bottleneck of the transmission for the core nodes in Space Information Network. Traditional interference-avoidance strategies, such as orthogonal resource planning in time, frequency, spatial domains, have approached to the engineering limit. In the future, a significant development of theory and technology in efficiently interference processing is the most dramatic need, which is conducive to solve the problems of wide coverage, severe interference and limited power resources in multi-satellite multi-beam systems. In order to meet the actual efficient transmission requirements of the Space Information Network, our research firstly focuses on the cooperative transmission in multi-satellite multi-beam systems. Based on the interference analysis and modeling in multi-satellite multi-beam systems, low-complexity joint interference processing between multiple beams and multiple satellites is investigated. Moreover, the difficulties of channel estimation and synchronization with high precision and low overhead are also overcome. Finally, the prototypical system is implemented to verify the innovative

英文关键词： Space Information Network；satellite communication；multi-beam；joint processing；channel estimation