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《Microelectronics》 2016-01
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A Digital Down Converter Based on Pipelined DA Algorithm

ZHOU Yun;FENG Quanyuan;Institute of Microelectronics,Southwest Jiaotong University;  
Digital Down converter(DDC),as the key part of software defined radio receivers,is used to implement frequency down-conversion,decimation,as well as filtering of intermediate frequency signals from the output of analog-to-digital converters,so as to obtain baseband signals at low sample rate and to benefit the following digital signal processing(DSP).Aiming at the conventional DDC structures,an optimized simple and efficient DDC architecture was proposed and implemented on Xilinx FPGA based on the distribute arithmetic(DA),pipelining and multirate digital signal processing technology.It was simulated by Matlab and Modelsim.Results showed that the multiplier-less DDC was efficient and resource-saving,which was easy to be embedded into the large systems.It had outstanding performances on engineering applicability.
【Fund】: 国家自然科学基金资助项目(61271090);; 四川省科技支撑计划资助项目(2015GZ0103)
【CateGory Index】: TM921.51
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