基于OFDM技术的机载两副天线同时通信方法

A method of simultaneous communication using two airborne antennas based on OFDM

飞机一般有两副超短波通信天线,在通信时只选择使用一副天线,这在应用中很难保证选择使用的天线最佳,但若两副天线同时使用,传统通信方式又会造成多延时信号之间干扰,从而使通信质量下降。针对该问题,提出基于OFDM技术的机载两副天线同时通信方法,在基于OFDM技术的通信中,加入训练序列和保护间隔,消除多延时信号间的码间干扰,保证在任何情况都能有良好的通信质量。仿真实验证明文中所提出的方法性能较好。

Generally,there are two pairs of ultrashort wave communication antennas,with only one pair of antennas being used in communication,which is difficult to ensure the best antenna in application.However,if two antennas are used at the same time,the traditional communication mode will cause interference between multiple delay signals,leading to the reduction of the communication quality.In order to solve this problem,this paper proposes a method of simultaneous communication using two antennas on board based on OFDM technology.In the communication based on OFDM technology,training sequence and protection interval are added to eliminate the inter code interference between multiple delay signals,so as to ensure good communication quality in any case.The simulation results show that the proposed method has good performance.