曼彻斯特编解码 Xilinx提供的VHDL的源代码

说明：  可调矩阵，最大32*32位浮点数乘法矩阵及仿真。(32*32 floating multiplication matrix)

A Mux to One Bit, written in VHDL.

ad9983的检测视频信号的code及其project 用的是xilinx 的virtex4 但不包括I2C-ad9983 test video signal code and the project using a xilinx the virtex4 but does not include I2C

这是最后一个，处理器内部ROM，如有需要，大家就顶-this is the last one, the processors internal ROM, if necessary, on the top you

说明：  这里是apb总线设计代码。这个源程序是基于verilog语言设计的(Here is the APB bus design code. This source program is designed based on Verilog language)

作为一个简明的教程，主要宗旨是让初学者快速地了解FPGA/SOPC（可编程片上系统）开发的流程。-As a simple tutorial, the main purpose is to enable beginners to understand Express FPGA/SOPC (system on programmable chip) development process.

32-bit shifter, shifter, 32-bit.Very goog as a study file.

WCDMA数字频域干扰抵消器，绝对的高手写的文档和代码，里面资料齐全方便自学，是很好的学习FPGA实现无线通信模块的资料。(WCDMA Frequency Domain Interference Cancellation figures, the absolute master of written documentation and code, which complete information to facilitate self-learning, is a very good learning FPGA implementation of wireless communications and information.)

时间同步后即可确定每帧数据的起始位置，这样就能完整的截取下每一帧。但是，数据中还带有频偏信息。在常规的通信系统中，多普勒很小仅仅会带来很小的频偏，但是在大多普勒的情况下，频偏将非常大，20马赫的速度将会带来将近34K的频偏。因此，如何很好的纠正频偏即为本系统的难点。 OFDM中，我们将大于子载波间隔倍数的频偏称为整数倍频偏，而将小于一个子载波间隔的频偏称为小数倍频偏。频偏矫正精度只要能保证小于十分之一倍的子载波间隔，频偏就不会对均衡和解调造成影响。本文中我们借鉴这种思想，由于硬件资源限制，我们将在接收端做64点FFT，即相当于将频域划分为64份，我们将小于 的频偏称为小数倍频偏，将 整数倍的频偏称为整数倍频偏。本程序即基于SCHIMDL经典方法完成小数倍频偏纠正(After time synchronization can determine the starting position of each frame data, so you can complete the interception of each frame. However, in the data with frequency information. In conventional communication systems, doppler small will bring only small deviation, but in the case of most of the doppler, frequency PianJiang is very large, 20 Mach speed will lead to deviation of nearly 34 k. Therefore, how to good to correct deviation is the difficulty of this system. OFDM, we will be bigger than the sub-carrier spacing ratio of frequency deviation is called the integer frequency offset, and the interval will be less than a child carrier frequency offset is called decimal frequency doubling. Deviation is less than one over ten times as long as can guarantee accuracy of sub-carrier spacing, deviation will not affect balance and demodulation. This article, we draw lessons from the idea, due to the limited hardware resources, we will do 64 points FFT at the receiving end, which is equ)

此设计采用Verilog HDL硬件语言设计,在掌宇开发板上实现. 将整个电路分为两个子模块，一个提供同步信号（H_SYNC和V_SYNC）及像素位置信息；另一个接收像素位置信息，并输出颜色信号。这样便于进行图形修改，同时也容易实现- This design uses Verilog the HDL hardware language design, realizes on the palm space development board Divides into two stature modules the entire electric circuit, provides the synchronized signal (H_SYNC and V_SYNC) and the picture element positional information; Another receive picture element positional information, and output color signal. Like this is advantageous for carries on the graph to revise, simultaneously is also easy to realize