L-DACS1系统数字变频器的FPGA设计与实现  

Design and implementation of digital converter in L-DACS1 system based on FPGA

作　　者：李勇[1] 刘海涛[1] 

机构地区：[1]中国民航大学天津市智能信号与图像处理重点实验室,天津300300

出　　处：《现代电子技术》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)

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.

关 键 词：L-DACS1 正交频分复用 数字变频器 现场可编程门阵列 

分 类 号：TN402[电子电信—微电子学与固体电子学]