内插器在软件无线电发射机中的应用

Application of the interpolator in the software radio transmitter

介绍了多速率信号处理中的内插理论,然后对内插器的作用进行了仿真分析,进而分析出内插器在软件无线电发射机部分中的应用,同时,通过对FIR滤波器表达式的分解,推导出了FIR滤波器的多相结构,最后得出了利于实时处理的高效内插器结构.

The interpolation theory of the multirate digital signal processing was introduced and the function of the interpolator was simulated ,and then the application of the interpolator to the software radio transmitter was analysed.The multiphase structure of FIR filter was deduced by decomposing the expression of FIR filter. Finally, the efficient interpolation structure is obtained,which is very suitable for real-time signal processing.