基于一阶矩的傅里叶变换的硬件结构设计
首发时间:2012-12-27
摘要:离散傅里叶变换(DFT)是数字信号处理中的基本运算,具有重要的理论和应用价值。本文根据一阶矩实现DFT数学变换的理论知识,在FPGA上实现了离散傅里叶变换。该设计用硬件描述语言Verilog实现, QUARTUSII综合,用MODELSIM和MATLAB进行仿真。详细设计了执行计算的控制逻辑、存储器单元、旋转因子累加逻辑、一阶矩计算逻辑、结果输出矩阵这五大模块。综合实现后的结果表明该结构满足设计要求,具有很好的应用前景。
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Hardware structure of DFT Based on First-order Moments
Abstract:The Discrete Fourier Transform (DFT) is an important basic operation in digital signal processing. In this paper a design based on first-order moments to calculate DFT has been implemented. The design was written by hardware description language Verilog and compiled by QUARTUS II . MODELSIM and MATLAB are used for model and simulation.Control Logic, ROM, Line Array, Systolic Logic Array and Result Array have been well described. By analyzing the results from the simulation and synthesis, a conclusion has been acquired that the designs presented in the thesis have met design requirements and have superior practical prospects.
Keywords: DFT First-order moment FPGA
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