基于fpga的vga输出灰阶测试图片

ldpc verilog code has been descripted in this program

基于verilog语言的串口通信，可以实现数据的发送和接收，代码清晰明了

使用 nios 和 verilog hdl tcp/ip 通信通过使用来创建 DM9000A，它可以工作到 5 Mb/s 我已经用它在 DE2 板，你下载它和可以将复制到您的项目，然后使用它直接

FPGA程序,使用Verilog语言生成1个脉冲可调的PPS脉冲信号。(FPGA program generates 1 PPS pulse signal, using Verilog language.)

yuv444 与yuv422相互转换verilog语言(yuv444 to yuv422)

利用Verilog语言编写的RS-232串口转SPI的8位数据输出的源程序，里面有详细注释，利用ModelSim进行仿真测试，输入输出数据一样，真实可用。

基于FPGA的电子密码锁设计-已在开发板上成功运行，通过老师检验。(FPGA based electronic password lock design- has been successfully developed on the development board, through the teacher inspection.)

VHDL implementation of RC6 encryption algorithm Test file represent applying all zero input and all zero key note that result is correct but bytes positions are swapped

VHDL实现简单打地鼠游戏机，北邮数电实验(VHDL simple playing hamster games, BUPT number of electric experiment)

。给出了时域滤波的基本原理以及通常采用的 IIR 椭圆地物杂波滤波器的设计方法。重点研究了回归滤波器这一时域滤波算 法。从正交多项式的拟合出发，给出了回归滤波器抑制地物杂波的基本原理及 其滤波实现过程。通过对回归滤波器的计算复杂度的研究，寻找使回归滤波器 计算量最小的正交多项式。分析了回归滤波器频率响应特性，比较了回归滤波 器与IIR 椭圆地物杂波滤波器的计算复杂度。利用仿真的雷达信号，分析了回 归滤波器的地物杂波抑制性能。回归滤波器实际上是一高通滤波器，它在滤掉 低频地物杂波的同时，对落在滤波器阻带内的天气回波信号同样会造成衰减。 在天气回波信号谱宽固定的情况下，通过改变天气回波信号的平均多普勒频率， 分析了回归滤波器对它的衰减情况。在基于一组实际采集的雷达信号的基础上， 给出了回归滤波器的地物杂波抑制比随着滤波器阶数的变化情况。(Firstly, this dissertation introduces the research background and significance of ground clutter suppression, analyzes the characteristics of the ground clutter and weather signals in the Doppler weather radars and simulates Doppler radar echo signals (It includes ground clutter, weather echo signals and the mixture of them). The simulated signals are used later to study the time and frequency domain ground clutter suppression. Secondly, this dissertation talks about the time domain filtering, gives the basic theory of time domain filtering and describes the design method of the usually used fifth-order elliptic infinite impulse response (IIR) ground clutter filter. In the time domain, the work focuses on the regression filter. From the orthogonal polynomials fit, this dissertation gives the basic theory of the regression filter for ground clutter suppression and the filtering process using a regression filter. Through the study of the computational complexity of regression)