DFT与FFT在宽带数字接收机中的应用

Application of DFT and FFT in Wideband Digital Receiver

介绍了DFT和FFT在数字信道化接收机中的应用,对ALTERA公司提供的FFT核进行了性能测试,分析了在宽带数字接收机中DFT相比于FFT可能具有的优越性,提出了对数据进行重叠处理的补零滑动算法,该算法有助于构造实时处理的数字信道化接收机。

This paper introduces the application of discrete Fourier transform（DFT） and fast Fourier transform（FFT）in digital channelized receiver,and tests the core of FFT supplied by ALTERA Inc,analyses the superiority of DFT compared to the FFT in the application of wideband digital receiver,puts forward an adding-zero and glide algorithm to carry on the overlap processe to data.This algorithm is helpful to design the real-time processing digital channelized receiver.