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毕业设计基于matlab的QPSK系统仿真
- QPSK是英文Quadrature Phase Shift Keying的缩略语简称,意为正交相移键控,是一种数字调制方式。在19世纪80年代初期,人们选用恒定包络数字调制。这类数字调制技术的优点是已调信号具有相对窄的功率谱和对放大设备没有线性要求,不足之处是其频谱利用率低于线性调制技术。19世纪80年代中期以后,四相绝对移相键控(QPSK)技术以其抗干扰性能强、误码性能好、频谱利用率高等优点,广泛应用于数字微波通信系统、数字卫星通信系统、宽带接入、移动通信及有线电视系统之中......理解QP
envelope_matlab
- 包络谱的求取程序,已经过matlab运行,没有问题。-envelope,in matlab code
FCM_tool_box_Ver2[by_faruto]
- 画包络谱和幅值谱的matlab程序 希望对大家有用-Painted envelope spectrum and amplitude spectrum matlab program
EMD-end-effect
- EMD端点效应新文献资料;带端点延拓的EMD和原始EMD的matlab程序;画包络谱和幅值谱的matlab程序;供研究者参考-End effect of EMD literature endpoint extension of EMD and original EMD matlab program painting envelope spectrum and amplitude spectrum matlab program for researchers reference
emd-matlaB
- 该程序绘制了仿真信号的FFT频谱和功率谱,并调用emd分析方法,绘制了emd分解结果,以及瞬时包络和瞬时频率图,还有Hilbert-Huang谱和Hilbert边际谱。-The program draws the FFT spectrum and the power spectrum of the simulated signal and call emd analysis, drawn emd decomposition and instantaneous envelope and insta
hua_baol-hua_fft
- 两个求信号包络谱和幅值谱的matlab程序,也可求功率谱。-2 effective procedures for the signal envelope spectrum and amplitude spectrum
sy2
- (1) 分别采集一段浊音和清音语音信号(是你自己说的),采样率为8KHZ,量化精度为16比特线性码; (2) 分析帧长取为30ms(或10ms~50ms); (3) 根据语音信号倒谱分析和LPC谱分析的编程流程图(图2.1、图2.2)编制浊音语音信号谱分析的matlab程序,上机调试给出相应波形,并根据图形,观察共振峰情况; (4) 将语音信号换为清音语音,运行程序,与浊音语音的运行结果进行比较,并得出结论。 (5) 在LPC谱分析中,改变阶数p (p分别等于4、8、12、40)
emdfenjie
- matlab的emd分解程序,高效准确,可用于频谱包络谱分析。-matlab' s emd decomposition process, efficient and accurate, and can be used for spectral envelope spectrum.
实验处理参考程序
- 信号处理,用于信号的谱分析、包络提取、自相关、参数分析(it's for singal processing)
画包络谱和幅值谱的matlab程序
- 关于画HHT方法中包络谱和幅值谱的程序,可以精确画出Hilbert包络谱的图像(On painting HHT method in the envelope spectrum and amplitude spectrum procedures, you can accurately draw Hilbert envelope spectrum of the image)
Desktop
- MATLAB的傅里叶变换和包络谱程序,可以作为FFT变换的学习(Fourier transform and envelope spectrum program of MATLAB)
画包络谱和幅值谱的matlab程序
- 基于傅里叶变换,实现了包络谱和幅值谱分析。(Based on Fourier transform, envelope spectrum and amplitude spectrum analysis are realized.)
包络分析
- 一个简单的包络谱算法,十分常用哟,有兴趣的小伙伴可以下载看看,对新手帮助还是很大的(A simple envelope spectrum algorithm, very commonly used yo, interested small partners can be downloaded to see, the new help is still big for the novice)
significance
- matlab包络谱程序,可以用来处理信号,并画出信号的频谱图(The MATLAB envelope spectrum program can be used to process signals and draw the spectrum of signals.)
基于EMD的包络谱进行故障诊断matlab程序实例
- 对原始信号进行EMD分解及包络解调,得出包络解调谱,分析出故障频率(The original signal is decomposed by EMD and demodulated by envelope. The spectrum of envelope demodulation is obtained and the fault frequency is analyzed.)
1.5维能量谱MATLAB代码
- 1.5维能量谱matlab程序,有需要的可以下来看看,文件包含1.5维能量谱、1.5维包络谱,可直接运行使用