用于频域抗干扰的高速FFT实现

Implementation of a High Speed FFT Processor for Interference Suppression in Frequency-Domain

针对卫星通信中的强窄带干扰,文中讨论了采用FPGA硬件实现高速实时FFT处理器的设计方案,并基于此FFT实现频域窄带干扰抑制。作者采用基于单级运算单元与单级数据存储单元进行级间复用的方法来完成FFT处理。所设计的方案,在进行高速FFT运算的同时,在很大程度上节省了硬件资源,有效的抑制窄带干扰。

In accordance with the characteristics of strong narrowband interference in satellite spectrum-spread communication, the design method for a high speed real-time FFT processor and interference suppression in frequency-domain using FPGA technology is presented. Based on the R4 DIF algorithm, the proposed architecture uses a single-stage memory and a single data process unit for a small hardware size. The main purpose of using these techniques is to economize the hardware size and obtain