基于FPGA的QAM调制器系统实现  

System implementation of QAM modulator based on FPGA

作　　者：沈志[1] 王宏远[1] 陈少明[1] 黄铭[1] 

机构地区：[1]华中科技大学电子与信息工程系,湖北武汉430074

出　　处：《电子技术应用》2010年第1期32-35,共4页Application of Electronic Technique

摘　　要：提出了一种改进型直接上变频数字电视QAM调制器方案。系统基于FPGA和高速正交调制数模转换芯片。给出了系统硬件设计方案及内部逻辑模块设计方法,讨论了系统实现中的设计难点。实际测试表明该系统达到了预期设计目标。An improved direct up-convert DVB QAM modulator based on FPGA and high speed quadrature modulate DAC is presented in this paper. The design of hardware system, technique of internal digital logic, and difficulty in system implement are also introduced. The practical measurements show that system can meet the requirements of expected design goal.

关 键 词：QAM调制器 FPGA 正交调制 AD9957 

分 类 号：TN76[电子电信—电路与系统]