vhdl adder with two input 4

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)

I2C总线控制器 altera提供的VHDL的源程序代码-I2C Bus Controller ALTERA the VHDL source code

轴系测试程序，多通道输入输出，实现时域、频域、轴心轨迹、瀑布图等功能。(Shafting test program, multi-channel input and output, to achieve time domain, frequency domain, orbit, waterfall and other functions.)

verilog实现DLX指令集5段流水线(5 stage DLX pipeline implemented in verilog)

fpga平台实现srio通信，以及srio端口寄存器设计。(FPGA platform to achieve sRIO communication, as well as sRIO port register design.)

四位十进制频率计的顶层控制模块，用于生成测频需要的复位及控制信号-four decimal frequency of top-level control modules, used to generate the required frequency measurement and control signals reset

this a example for the LCD for altera FPGA cyclone ii EP2C8. implemented in verilog. tested using altera EP2C8 fpga

常见的几种电机的特征与控制方法-Several common characteristics of the motor and control method

应用背景通用模块，以产生可重构的源时钟频率的传输速率。该模块可用于UART，自定义串口协议等。提供一个时钟发生器模块产生可选 ；-波特利率和；——时钟源（可选择分因素） ；还产生接收 ；——时钟的16倍，8倍，倍，倍的传输波特率 ；关键技术UART，VHDL，FPGA，CPLD programmanle逻辑器件。设备无关的代码

JOP内核字节码获取，很难找的东东，呕血之作-JOP core byte code access, it is difficult to find the price. Zhi for hematemesis