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无人机(UAV)中继通信是实现远距离点对点无线通信的一种重要技术手段。为提高无人机中继通信系统链路传输的可靠性,提出基于空时分组编码的无人机放大转发中继通信传输方案,并基于双跳链路遍历容量最大化的准则给出了无人机最佳航迹规划方法,并进一步利用FM-EM算法给出了基于空时分组编码无人机中继通信系统的中断概率及遍历信道容量计算公式。计算机仿真表明:提出的方法显著优于传统的单发单收(SISO)无人机中继通信系统。
UAV relay communication is an important technical means to realize long-distance point-to-point wireless communication. In order to improve the reliability of the link transmission in the UAV communication system, this paper proposes an UAV communication scheme based on space-time block coding, which is based on the maximization of double-hop link traversal capacity Man-machine the best route planning method, and further use of FM-EM algorithm is given based on space-time block coding UAV relay communication system interrupt probability and traversal channel capacity formula. Computer simulation shows that the proposed method is significantly superior to the traditional Single Receiver Single Receiver (SISO) UAV relay communication system.