基于L频段数字航空通信系统1的F-OFDM波形设计

随着航空飞行器种类和数量的激增以及第五代(5G)移动通信系统和物联网(IoT)时代的到来,下一代航空无线通信系统面临着高安全性、大传输容量、低延时、强鲁棒性、高灵活性和综合业务提供等新的挑战.为此,提出了一种基于L频段数字航空通信系统1(L-DACS1)的滤波正交频分复用(F-OFDM)波形设计方法并探讨了可能的技术演进路径.首先引入了认知无线电、非连续载波干涉码OFDM和滤波器的思想,然后针对不同航空飞行器用户动态自适应配置波形参数.仿真结果表明,该方法得到的系统波形具有较低的带外辐射功率、优良的块误码率性能和较高的吞吐量增益.

F-OFDM waveform design based on L-band digital aeronautical communications system 1(L-DACS1)

With the proliferation of aircraft types and numbers and the incoming of new era of the fifth generation (5 G) mobile communications and Internet of Things(IoT),new challenges such as high safety,large transmission capacity,low latency,strong robustness,high elasticity and synthetic service providing are faced by the next generation aeronautical communications system.In this paper,a waveforms design method of filtered orthogonal frequency division multiplexing (F-OFDM) based on L-band digital aeronautical communications system 1 (L-DACS1) is put forward to cope with these challenges and the possible technology evolution path is prospectively discussed.Firstly,the concept of cognitive radio,non-continuous cartier interference code OFDM and filter is introduced,and then the waveform parameters are dynamically and adaptively configured for different aircraft users.The simulation results show that the proposed system has a low power of out-of-band radiation,good block error rate and high throughput gain.