摘要
L波段数字航空通信系统(L-DACS1)是一种基于正交频分复用(OFDM)技术的多载波传输方案。该系统具有频谱利用率高、抗多径干扰能力强等优点,适用于信号传输信道更复杂的民用航空地-空通信,并作为未来数字航空通信系统的候选系统之一。研究了L-DACS1系统数字变频器的设计方案,并基于现场可编程门阵列(FPGA)在Apex-CPCI-5610通信开发板上实现了这种方案。测试结果表明,该方案能够正确地实现数字上/下变频,能够满足L-DACS1系统设计要求。
Lband digital aeronautical communication system（L-DACS1）is a kind of multi-carrier transmission one based on orthogonal frequency division multiplexing（OFDM）. The system has the advantages of high utilization rate of frequency spectrum and anti-multipath interferences. It is applicable to civil aviation A/G communication channel which is more complex for signal transmission,and is a candidate of digital aviation communication systems in the future. The digital converter design scheme for L-DACS1 system is investigated in this paper. The scheme based on field programmable gate array（FPGA）was realized in Apex-CPCI-5610 communication development board. The test results show that the scheme can accurately implement digital up/down conversion,and can meet the design requirements of the L-DACS1 system.
出处
《现代电子技术》
北大核心
2015年第3期59-61,65,共4页
Modern Electronics Technique
基金
国家自然科学基金资助项目(U1233117及61271404)
