面向飞行器载体的毫米波大规模共形天线阵列预编码技术研究

毫米波大规模多输入多输出系统是解决空中大容量数据传输的新架构，预编码技术是其关键技术之一。目前，预编码技术的研究主要面向地面场景采用的平面天线阵列。在空中高速移动宽带通信系统中，受飞行器载体空间及气动特性等条件约束，大规模天线阵列部署在飞行器上时，需要与飞行器表面形成“共形”，而针对共形天线阵列的预编码技术尚未有深入研究。本项目拟结合飞行器载体空间物理特性，通过研究共形天线阵列的最优化结构布局，及基于离线预定义码本的码本设计和搜索算法，解决共形天线阵列的预编码技术问题，并利用多维度辅助信息，掌握面向空中飞行器高速移动场景的高效波束追踪方案，为空中高速移动宽带通信系统的应用提供技术参考。

Millimeter-wave massive multiple input multiple output (mmW-MIMO) system is the potential technology for the data transmission with high capacity in the space-air-ground (SAG) wireless communications. Precoding technology is one of the key technologies in the mmW-MIMO system. In the SAG scenarios with high capacity and high mobility, due to the space constraints of the aircraft carrier, when the massive antenna array is deployed on the aircraft, it needs to form a "conform" with the surface of the aircraft. Therefore, unlike traditional planar antenna arrays, solving the precoding problem of conformal antenna arrays is one of the key issues in the application of mmW-MIMO systems in the SAG communication scenarios. However, little research work has been done for the precoding design of conformal antenna arrays. In this project, we focus on the research of the precoding technology of the conformal antenna array by studying the optimized conformal antenna structure layout, the design of the offline predefined codebook, and the efficient beam tracking scheme assisted by multi-dimensional information, which could help to pave the way towards the applications of the future high capacity SAG wireless communication systems.