8位深，9位宽FIFO VHDL源码设计，如需改进可在此基础上扩展

ADDER USING VERILOG ADDER WITH VERILOG VERILOG ADDER

cic设计 verilog verilog(cic verilog design verilog)

SRAM的读写代码，对SRAM进行了乒乓操作，用VHDL语言进行设计，很有参考价值，甚至可以直接复制代码来进行自己的设计(SRAM read and write code, ping-pong operation carried out on the SRAM, using VHDL language design, of great reference value, or even directly copy the code to carry out their own designs)

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)

VHDL 快速参考手册，简要概括了VHDL，非常适合做开发参考-VHDL Quick Reference Guide, a brief summary of VHDL, is well suited to do the development of reference

fpga，主要功能是实现n*n图像的旋转，源程序代码，(fpga, main function is to achieve the n* n image rotation, source code,)

最近交互式电源技术，软交换、同步整流、频率固定(Alternating expressions Power technology recently、Softswitch, synchronous rectification, fixed frequency)

说明：  Multiplexer 4 to 1 on Modelsim

CH4CH2CH1VHDL 数字电路参考书所有程序5-CH4CH2CH1VHDL digital circuit reference all proceedings 5

VGA interface using Spartan3E board from DIGILENT.Labview .vi