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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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prj_ex_5
自动化仿真平台的搭建使用代码,经过具体的仿真和优化,发现代码完全可用(The automated simulation platform is built using code, and after specific simulation and optimization, it is found that the code is fully available)
- 2017-09-21 15:11:33下载
- 积分:1
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verilog 改性鲍伍利 8 x 8 乘法器
这段代码是修改鲍伍利乘数与乘数强度 8 x 8,和书面的 VERILOG 门级或结构端口映射方法和试验验证了功能仿真从 Xilinx 和 Altera 软件第二
- 2022-08-13 22:21:48下载
- 积分:1
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设计和ASIC平台实现DDR SDRAM控制器
专用的内存控制器是素数在不包含的微处理器的应用程序的重要性(高端应用)。内存控制器提供内存刷新指令信号,读取和写入操作和SDRAM的初始化。我们的工作将集中于ASIC双数据速率(DDR)SDRAM设计方法控制器位于DDR SDRAM和总线之间高手。控制器简化了SDRAM命令接口标准的系统的读/写接口,也优化的读/写周期的存取时间。双倍数据速率(DDR)SDRAM控制器使用Cadence RTL实现编译器。
- 2023-02-20 15:00:04下载
- 积分:1
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WM8731_WM8731L
wm8731音频编解码芯片使用介绍,该手册里面对该芯片进行了详细的描述,对各个单元模块也进行了详细的阐述(the handbook of WM8721/WM8731L)
- 2010-05-20 10:47:30下载
- 积分:1
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veriloghdllicheng135li
Verilog的应用例程,包含了基本的硬件编程,加法器,触发器(Application of Verilog routines, including the basic hardware programming, adders, flip-flop)
- 2010-12-14 20:38:03下载
- 积分:1
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source
说明: I2C MASTER DESIGNED by Verilog
- 2020-06-18 23:40:02下载
- 积分:1
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Xilinx_2018_Licenses_Downloadly.ir
说明: Xilinx Licenses 2018
- 2020-06-25 08:20:01下载
- 积分:1
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scope_VGA
利用IIC接口的4路 ADC max1037,采集思路信号,通过在FPGA内部的构建DeltaSigma DAC软核,在VGA液晶显示屏上显示波形。 (IIC interface 4-way ADC max1037, collecting ideas signal the FPGA internal build DeltaSigma DAC soft-core VGA LCD display waveforms.)
- 2012-07-24 00:41:29下载
- 积分:1
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用FPGA verilog hdl模拟类I2C通信
用FPGA verilog hdl模拟类I2C通信
- 2022-02-25 01:16:56下载
- 积分:1