专用FFT实时信号处理器的硬件实现研究

Research of Hardware Implementation in FFT Ratl-time Signal Processor

在选择并具体分析 FFT基 4—DIT算法流程结构基础上 ,利用现场可编程门阵列( FPGA)设计开发了实时 FFT信号处理器。全部设计方案采用 VHDL描述 ,并在 Xilinx公司的大规模可编程逻辑器件 XC40 85 VL上实现。运行速度达到实时要求。

The purpose of this paper is to study the hardware implementation method of Fast Fourier Transform(FFT)using Fidld Programmable Gate Array(FPGA).Badef on the option and analysis flow structure of FFY,the design is implemented on XC4085VL of Xilinx Foundation Inc.The whole scheme is deseme is described in the VHSIC Hardware Description Language(VHDL),which can improve efficency of design.The speed of system can meet expectations of real-time processor.