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mydesign.rar
- 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 simu
baseband_verilog.rar
- verilog实现的基带信号编码,整个系统分为六个模块,分别为:时钟模块,待发射模块,卷积模块,扩频模块,极性变换和内插模块,成型滤波器,verilog implementation baseband signal coding, the entire system is divided into six modules, namely: the clock module, to be launched modules, convolution module, spread spectrum m
SDR
- 直接序列扩频通信的Verilog仿真代码,在Quartus II中实现。-Direct sequence spread spectrum communication Verilog simulation code, implemented in Quartus II.
VHDL_DMF
- Vhdl实现扩频通信匹配滤波器,书上打下来的,打了好久.-VHDL realization of spread spectrum communication matched filter, books, playing down, playing for a long time.
fft
- 用VERILOG语言实现的频谱分析仪(FFT)-VERILOG language with the Spectrum Analyzer (FFT)
bpsk
- 基于能量检测的频谱感知.由于实际信道中的多径和阴影效应,单个认知用户频谱感知的性能受到影响,因此需要靠不同用户间的协同频谱感知来对抗多径和阴影效应。本设计要求在文中采用一种协作机制,即两用户进行协作频谱感知,提高主用户的检测率,减少检测时间,并且得到捷变增益。要求给出仿真结果。-spectrum sensing in cognitive radio based on energy detection.As the channels in diameter and shadow, not a si
MATLAB-and-verilog
- 1 采用正弦波,方波进行同步调制,实现调制信号、已调信号、解调信号的波形、频谱以及解调器输入输出信噪比的关系。 2 采用Verilog语言编写有符号的五位乘法器 3 实现数字与模拟调制-A sine wave, square wave synchronous modulation to achieve the modulation signal, the modulated signal, the demodulated signal waveform, spectrum and sig
Sender
- 直序扩频通信发送部分的源代码,用verilog编的,包括信源模块、扩频模块、极性变换模块和DDS调制模块-Direct sequence spread spectrum communication sent part of the source code, compiled with verilog source modules, spread spectrum modules, polarity transform module and DDS modulation module
energy_sensing
- 认知无线电中频谱检测算法采用能量检测实现,verilog编写的,只有.v文件,需要自己综合编译-Cognitive radio frequency spectrum detection algorithm uses energy detection to achieve, verilog prepared only. V file, needs its own comprehensive compilation
QPSK_DSSS
- 该程序使用verilog语言,编写了QPSK-DSSS系统的发端,主要模块包括对同相分量和正交分量的扩频,通过根升余弦滤波器,以及与载波相乘等模块。-The program uses the verilog language, written QPSK-DSSS system, the originator, the main modules include in-phase and quadrature components of the spectrum, through the root
audio_fft_vga
- 代码使用Verilog HDL实现了使用WM8731对音频进行采样,并且使用ALTERA FPGA实现了频谱计算(FFT),在VGA上显示频谱。-Achieved using the Verilog HDL code using WM8731 audio sampling, and use ALTERA FPGA to achieve the calculated spectrum (FFT), shows the spectrum on VGA.
Spread-Spectrum-Analyzer
- Spread-Spectrum-Analyzer in verilog with testbench
扩频通信的Verilog工程
- 扩频通信的Verilog工程,对从事无线通信的工程人员有参考作用。(Spread spectrum communication Verilog project, engaged in wireless communications engineering staff reference.)
Nexys4FFTDemo-master
- A simple Verilog example of a 4096pt FFT on analog input from a Nexys 4 XADC. The input is sampled at 1MSPS, oversampled to produce 14-bit samples at 62.5kHz, then sent to the FFT processing modules and passed through to PWM Audio out. The FFT output
signal
- 简易频谱仪 256位 采用了直接数字频率合成技术(DDS)和计算机控制技术,选择美国Analog Devices公司的高度集成DDS芯片AD9851和AT89S52单片机作为控制器件,设计了一种基于DDS的程控信号发生器。用C语言进行了软件应用设计。实验结果表明,该信号发生器能较好地产生较高稳定度的激励信号,具有较高的实用价值。(Simple spectrum meter 256 bit)
1
- 针对矿浆管道工况调整给泄漏检测带来的干扰,准确提取泄漏信号的特征量是降低泄漏误报、漏报的关键。为此,提出了一种基于经验模态分解(EMD)、Hilbert能量谱与变量预测模型(VPMCD)相结合的泄漏检测方法。该方法首先将压力信号分解成若干个固有模态函数(IMF)之和,然后将IMF分量进行Hilbert变换得到局部Hilbert能量谱,依据能量分布的标准差选择最能准确反映矿浆管道运行工况的局部能量谱作为特征值向量,最后通过VPMCD分类器建立泄漏识别模型。将该方法应用于泄漏检测中,实验结果表明,矿