基于CORDIC算法的数字下变频器设计

Design of Digital Down Converter Based on CORDIC Algorithm

数字下变频技术的基本功能是将宽带高速数据流信号转变成窄带低速数据流信号,以便DSP实时处理。研究了基于协调旋转数字式计算机(CORDIC)算法的数字下变频设计,这种方法能有效提高信号处理效率,减小硬件设计的代价,并且通过仿真证明该方法的高效性。

The basic function of digital down-conversion technology is to transfer wideband high speed data signals into narrowband low speed data signals,so that DSP can process them in real time. This paper studies the design of digital down converter based on coordinate rotation digital computer(CORDIC) algorithm,the method can improve the efficiency of signal processing,reduce the design cost of hardware.Then manifests its high efficiency by the use of simulation.