FFT在低功率微程序控制器中的应用

低功率微处理器的储存空间比较小，如何用其实现FFT变换一直是一个比较重要且很难实现的问题。详细介绍了实现FFT的具体算法包括低功率微处理器的固有缺点，采集样本需要注意的问题及其程序实现，加窗程序以及在实现过程中应注意的问题。在低功率微处理器中实现了FFT变换，结果表明所设计的方法在低功率微处理器中具有良好的性能。

Applications of FFT in Low-power Microcontrollers

It is difficult for a microcontroller to implement FFT because the random access memory （RAM） in the low- power microcontroller is very small. The low-power microcontroller and the realization condition of FFT are introduced. In addition, the algorithm to implement FFT and the disadvantages of the low-power mierocontroller are presented. The matters needing attention to the acquisition of samples, programm realization and the matters for widowing to the raw signal are described. The FFT was achieved in the low-power microcontroller. An efficient method to perform FFT in the low-power microcontroller was designed. The results demonstrate that the approach is feasible .