10GE以太网MAC

超級好用 25M~100HZ的除頻器 寫了好久 超級實用 歡迎下載(Super easy to 25M ~ 100HZ of divider wrote a long time super practical welcome to download)

ALERA fpga 8B10B转换源码，用于实现8B转10B，10B转8B功能。(ALTERA fpga 8B10B conversion source, used to achieve 8B to 10B, 10B to 8B function)

。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)

本项目可以使用ip产生正弦或余弦信号核心.if你需要像fsk或psk一样的调制，你可以根据需要改变输入我需要这个如果需要，nco可以产生sin或cos信号。

密码锁，大学数字eda课程顺序锁的源代码，有2位或者4位的顺序锁，可以在fpga或者cpld上实现 (Password lock, digital eda course the order of the source code of the locks, the order of two or four locks, and can be implemented on the fpga or cpld)

verilog 写的工程，是个基于流水线的乘法器(verilog write the works, is based on a pipelined multiplier)

说明：  实现可连续输入数据做三角函数变换处理，通过verilog代码实现，(It realizes triangular function transformation for continuous input data.)

Quartus II 7.2最完美的license破解器!(Quartus II 7.2 FULL and perfect License!)

DDR2控制器设计原码,可以在FPGA上测试通过,并对外部的ddr memory进行读写访问.(DDR2 controller design of the original code, can be tested through the FPGA, and external ddr memory read and write access.)

本书简要介绍了Verilog硬件描述语言的基础知识，包括语言的基本内容和基本结构 ，以及利用该语言在各种层次上对数字系统的建模方法。书中列举了大量实例，帮助读者掌握语言本身和建模方法，对实际数字系统设计也很有帮助。本书是Verilog HDL的初级读本，适用于作为计算机、电子、电气及自控等专业相关课程的教材，也可供有关的科研人员作为参考书。(This book briefly introduces the Verilog hardware description language basics, including basic elements of language and basic structure, and the use of the language at various levels on the digital system modeling. The book lists a large number of examples to help readers master the language itself and the modeling of the actual digital system design is also helpful. Verilog HDL book is a primer for a computer, electronic, electrical and automatic control and other specialized courses related to materials, but also for the researchers as a reference.)