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bhas
this is a vhdl program...
- 2013-08-17 23:30:56下载
- 积分：1
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Gen_Opto_Simplis
Simetrix搭建的一个光传输仿真工程，很好的学习参考。(Simetrix built an optical transmission simulation project, a good reference for learning.)
- 2018-09-15 00:22:03下载
- 积分：1
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chengxu
数字时钟，可以实现(1) 显示日期功能（年、月、日、时、分、秒以及）
(2) 可通过按键切换年、月、日及时、分、秒的显示状态
(3) 可随时调校年、月、日或时、分、秒
(4) 可每次增减一进行时间调节
(5) 可动态完整显示年份，实现真正的万年历显示
(6) 可显示温度
(Digital clock, can be achieved (1) the date function (year, month, day, hour, minute, seconds as well) (2) through the key switch the year, month, day in a timely manner, minute, second display state (3) at any time adjust the year, month, day or time, minutes, seconds (4) can be added or deleted, a time adjustment (5) can be dynamically complete display Year, the real calendar display (6) to display temperature)
- 2012-10-15 00:25:33下载
- 积分：1
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fpga_dk_ps2_vga
ps2 vga interface in vhdl code
- 2011-11-08 11:09:35下载
- 积分：1
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AN66806
提供了利用 GPIF 对 FX2LP 与同步 FIFO CY7C4625-15AC 之间的接口进行设计的源代码(Provides for the use of GPIF FX2LP and synchronization FIFO CY7C4625-15AC to design the interface between the source code)
- 2013-08-13 14:42:55下载
- 积分：1
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cordic_atan
说明： 用verilog语言实现计算反正切函数，在软件无线电中解调PM/FM中使用的尤为频繁。上传的压缩包是modelsim工程，基于6.5c,里边包含一个完整的PM波产生以及解调过程的matlab文件仿真，并取其中间的I和Q支路做为verilog文件的输入，并将其借条输出与MATLAB实际解调输出作比较。
鉴相器的设计基于CORDIC算法，其精度取决于迭代的深度。由于工程实际运用只需要解调出atan值，并不需要绝对的值，所以并没有给予加权，需要的同学可以自己加上。(Calculated using verilog language arc tangent function, the software radio demodulation PM/FM is particularly used frequently. From the archive is modelsim project, based on 6.5c, inside the PM contains a complete demodulation process of wave generation and simulation matlab file, and whichever is the middle of the I and Q branch verilog file as input, and its IOU demodulated output and actual output of MATLAB for comparison. Phase detector design is based on CORDIC algorithm, its accuracy depends on the iteration depth. As the practical application of engineering demodulated atan value only and does not need absolute value, and there is no weight given to the need of the students can add their own.)
- 2010-04-07 16:30:47下载
- 积分：1
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Dec_mul
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)
- 2013-12-26 18:00:24下载
- 积分：1
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ABencode
FPGA实现增量式光栅尺正交脉冲解码，基于Verilog(FPGA realization of incremental grating ruler orthogonal pulse decoding, based on Verilog)
- 2020-11-21 20:59:36下载
- 积分：1
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业界标准的Verilog语法格式
说明： verilog标准语法，还有很多的样例参考，学习的好资料。(Verilog standard grammar, there are many examples for reference, good learning materials.)
- 2020-06-15 22:50:02下载
- 积分：1
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DSP_INTERFACE
DSP与FPGA时序接口模块，已经经过测试，保证读写稳定(The Interface of DSP to FPGA)
- 2021-01-08 10:58:51下载
- 积分：1
