基于FPGA的等精度计频器

说明：  基于quartusII的QDPSK调制解调vhdl程序。(Modulation and demodulation based quartusII of QDPSK vhdl program.)

用来实现IRIG_B码的解码程序，在XILINX ISE上运行过没有问题，(Used to achieve IRIG_B code decoding process, in XILINX ISE run-off is no problem,)

代码用两种方法设计了一个基于多相滤波的内插器，低通滤波器采用128阶凯撒窗，内插倍数32，并且给定信号范围，验证了内插器的正确性，画出了内插前后信号的频谱。(The code design the interpolator based on polyphase filter using two methods.The low pass filter is 128 order Caesar window and interpolation multiple is 32.I give the range of the signal to verify the interpolator and plot the spectrum of the signal before and after the interpolator. )

阿尔法贝塔滤波器，是卡曼滤波器的简化，比卡曼滤波器速度快。这是一个实例。(aplha-beta filter is filter that faster than kalman filter)

利用matlab，对偏振控制器进行仿真，最终在邦加球上进行显示(Using matlab, simulation of the polarization controller eventually be displayed on the Poincare Sphere)

fpga verilog实现 S29GL256S 系列 并行 nor flash 的读写擦除操作功能。 verilog源代码。(Verilog S29GL256S to achieve FPGA series parallel flash nor read and write erase operation function. Verilog source code)

说明：  32位/33M 从模式(target)PCI接口参考设计，Lattice提供。由于PCI时序较复杂，此设计仅能供参考(32/route from the model (target) PCI reference design, Lattice provided. Because PCI timing more complicated, and the design for reference only)

Verilog 最大公约数设计RTL级代码和芯片设计图(Verilog GCD Design and synthesis layout )

基于FPGA的直接序列扩频发射机的设计与仿真。实验中以QuartusII 7.2 为设计和仿真工具， 各模块采用Verilog HDL设计并封装，顶层使用图形设计方式,最后得到的仿真结果使用Matlab描点来绘制出波形。 (FPGA-based direct sequence spread spectrum transmitter of the design and simulation. Experiment to QuartusII 7.2 for the design and simulation tools, the module using Verilog HDL to design and package, the top-level use of graphic design, and finally the simulation results obtained using the Matlab description points to draw waveforms.)

rebuild file in check for