为了便于信号发射，提高信道利用率、发射功率效率以及改善通信质量，人们研制出各种通信信号的调制样式。尽管调制样式多种多样，但实质上调制不外乎用调制信号去控制载波的...

ISE 9.2 serials working

NAND型闪存接口程序 里面包含了datasheet以及测试程序 (NAND flash memory interface program)

sourceinsight的verilog插件-The Verilog sourceinsight plug-ins

。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)

Xapp 200 64 bit DDR SDRAM design files for Xilinx Vertix

VGA显示彩条DE2_70开发板 验证过的(VGA display color bar DE2_70 development board validated)

一个完整的viterbi编码程序，使用vhdl语言编写，还有测试程序-A complete viterbi coding procedures, the use of VHDL language, as well as test procedures

说明：  FPGA测试程序，仅供测试硬件是否能够运行，主要功能是点亮运行指示灯(The main function of the test program of FPGA is to light the running indicator.)

Use verilog language design DIGITAL-PID source

quartus一个完整的设计例子,从安装到实例完成，仿真等全过程，适合从0开始的初学者-Quartus a complete design examples, examples from installation to completion, the entire process of simulation, etc., suitable for the beginner to start from 0