摘要
针对全数字正交幅度(QAM)调制技术在数字微波通信系统中的应用,以64QAM为例提出了一种全数字实现的调制系统结构方案,基于QuartusⅡ及Matlab软件开发平台,用原理图和Verilog HDL语言相结合的方法实现了高阶QAM调制器的各个模块的FPGA设计。由于256QAM与64QAM具有相同的矩形星座图,通过修改Verilog HDL程序可以适应256制式的QAM调制。
Aming at the application of QAM modulation technique in the digital wave communication system,this paper introduces the structure scheme of MQAM system which takes 64QAM for example. The design is simulated in QuartuslI and Matlab software development platform. The FPGA design of each module of 64QAM and its modulate system is carried out with the method of schematic - based design and Verilog HDL - based design . Because the 256 QAM and 64 QAM has the same rectangle constellation. So this design can adapt to 256QAM modulation through revising the Verilog HDL program.
出处
《现代电子技术》
2008年第9期13-15,共3页
Modern Electronics Technique
