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全数字QAM调制射频输出的FPGA实现
引用本文:韩庆喜,刘志军,张淑慧,王小群.全数字QAM调制射频输出的FPGA实现[J].电子技术应用,2009,35(11).
作者姓名:韩庆喜  刘志军  张淑慧  王小群
作者单位:山东大学,信息科学与工程学院,山东,济南,250100
摘    要:一种采用AD9739与FPGA相结合、在FPGA上实现全数字QAM射频调制的方法。阐述了柰奎斯特滤波器、插值滤波器、多相滤波器、多相数字频率合成器的实现方法,并采用多相滤波技术和OSERDES技术解决了射频信号高采样率问题。介绍了AD9739的接口设计,并给出调制器的射频输出信号的实测结果,性能指标符合国家制定的DVB_C标准。

关 键 词:Nyquist滤波器  插值滤波  多相滤波  多相载波  OSERDES

Realization of all-digital QAM RF modulation based on FPGA
HAN Qing xi,LIU Zhi Jun,ZHANG Shu Hui,WANG Xiao Qun.Realization of all-digital QAM RF modulation based on FPGA[J].Application of Electronic Technique,2009,35(11).
Authors:HAN Qing xi  LIU Zhi Jun  ZHANG Shu Hui  WANG Xiao Qun
Abstract:A method of realization of all-digital QAM RF modulation based on FPGA and AD9736 is introduced in this paper. And the realization of Nyquist filter, multiphase filter, interpolation filter, multiphase carrier ale explained. The high sample rate of RF output signal is solved by using multi-phase filtering and OSERDES technology. Also the interface design of AD9739 is presented. At last, the measuring results of RF signals of this modula are given. The performance index keeps in line with the national standard DVB_C.
Keywords:OSERDES  Nyquist filter  interpolation filter  multiphase filter  multiphase carrier  OSERDES
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