基于空时分组码的Link-16全空域增强传输方案

Link-16 Full Airspace Enhanced Transmission Scheme Based on Space-Time Block Code

飞机间利用Link-16进行战术与指挥控制信息交互时,若只采用单天线通信,在一些场景中由于信号受机体遮挡会导致通信质量严重下降,甚至通信中断,无法实现全空域通信.针对这一问题,提出在机背和机腹各安装一幅天线,利用双天线进行信号收发,并结合Link-16时隙结构,采用空时分组码技术,在不降低系统频谱效率的同时实现全空域通信.仿真结果表明,在单天线通信受机体遮挡影响的场景下,采用空时分组码的双天线Link-16增强系统可有效实现全空域通信.

When using Link-16 to exchange tactical,command and control information between aircrafts,if a single antenna is used for communication,the signal will be blocked by the airframe,which will cause degradation of communication quality and communication interruption,making it impossible to achieve full airspace communication.It is proposed to install antennas on the aircraft back and belly,use double-antennas for communication,and combine the Link-16 time slot structure with Space-Time Block Code(STBC)to achieve full-airspace communication without reducing the system spectrum efficiency.The results show that the double-antenna Link-16 enhancement system using STBC can effectively realize full-airspace communication.