SMII 到 MII 转换的VHDL代码

FPGA实现串口发送 Verilog 语言(Serial reception FPGA Verilog language.)

用verilog HDL语言，通过一个4位移位寄存器实现一个信号转化为HDB3码并进行测试 -Using verilog HDL language, through a 4-bit shift register realization of a signal into HDB3 code and test

讲述了dds直接数字频率合成的基本原理，同时用ＶＨＤＬ语言编写dds原代码用于生成正弦波，并在ISE开发平台进行仿真和MATLAB验证正弦波输出结果(described dds direct digital frequency synthesis of the basic tenets addition to the use of VHDL prepared dds source used to produce sine, and ISE development platform for simulation and verification MATLAB sine wave output)

运用VHDL语言编写的检测1111的序列检测代码和加法器，运用verlog语言的交通灯，流水灯，出租车自动计费器等                                                                            

turbo码的verilog程序，有意者请下载。(turbo code verilog procedures Interested parties please download.)

基于芯片MAX502的十二位并行DAC芯片的程序，利用FPGA中的ROM查表进行数据存储-Based on 12 of the MAX502 chip DAC chips in parallel procedures, the use of FPGA in the ROM look-up table for data storage

卫星信道模拟器能够模拟卫星信道的传播特性，用于设备的通信调试，节 约研发成本。目前，很多卫星信道模拟器在参数设置上存在问题：有的参数难 以调节；有的采用上位机进行参数设置，通过上位机设置参数需要连接电脑， 适应性差。针对上述问题提出了一种基于FPGA可触控卫星信道模拟器，FPGA 作为算法实现和控制单元，通过控制触摸屏方便快捷的实现参数设置。(Literature of Satellite Channel Simulation Based on FPGA)

说明：  本资源有一个matlab程序段，是仿真BPSK分别在高斯噪声和瑞利衰落下的误码率，产生图形对仿真值和理论值进行比较(This resource has a matlab program segment, which is the bit error rate of simulated BPSK under Gaussian noise and Rayleigh fading respectively. The generated graph compares the simulated value with the theoretical value.)

说明：  配置GTH ip的例子工程，选用7 series 芯片的GTH 113quad的四个通道，在程序中每个链路利用自己的恢复时钟进行数据解码，所以四个通道可以各自独立运行；成功工作在2.54Gb/s的链路状态，长时间（>24小时）的测试，误码率一直为0.(The GTH ip example project is configured with four channels of the GTH 113quad of the 7 series chip. Each link in the program uses its own recovery clock for data decoding, so the four channels can operate independently; the successful operation is at 2.54Gb/ The link state of s, long time (>24 hours) test, the bit error rate has been 0.)

VHDL语言写的波形发生器和sine波形发生器,一共两个文件，通信开发平台专用。这是一个典型的正玄波发生器程序和一个任意波形发生器程序，大家可以参考学习，对于vhdl入门还是很有帮助的-This is a typical wave generator Shogen procedures and an arbitrary waveform generator procedures, Members can take a learning portal for VHDL or helpful