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ex6_1 ~ ex6_3二项分布的随机数据的产生
ex6_4 ~ ex6_6通用函数计算概率密度函数值
ex6_7 ~ ex6_20常见分布的密度函数
ex6_21 ~ ex6_33随机变量的数字特征
ex6_34 采用periodogram函数来计算功率谱
ex6_35 利用FFT直接法计算上面噪声信号的功率谱
ex6_36 利用间接法重新计算上例中噪声信号的功率谱
ex6_37 采用tfe函数来进行系统的辨识,并与理想结果进行比较
ex6_38 在置信度为0
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分析测量信号的FFT功率谱及功率谱密度,比较两者之间的差异-FFT power spectrum and power spectral density analysis comparing the measured signal difference between the two,
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bartle自功率谱密度分析,对于直接法的功率谱估计,当数据长度N太大时,谱曲线起伏加剧,若N太小,谱的分辨率又不好,因此需要改进。-Bartle since the power spectral density analysis, for the direct method of power spectrum estimation, when the data length N is too large, the spectrum curve of the ups and downs, if
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实验一 双极性矩形随机信号的归一化功率谱密度一
1.1 功率谱密度简介
平稳过程的任何一个非零样本函数的持续时间为无限长,显然都不满足绝对可积和总能量有限的条件。因此,它的傅里叶变换不存在即没有频谱函数。所以我们用功率谱密度来表述其频谱特性。
随机过程的任一实现是一个确定的功率型信号。而对于任意的确定功率信号f(t),它的功率谱密度为:
式中, 是f(t)的截短函数 对应的频谱函数。f(t)是平稳随机过程 的一个实现。而随机过程某一个实现的功率谱密度不能作为过程的功率谱密
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This code performs wide band Cooperative Spectrum Sensing under various noise levels. A large number of primary users as well as secondary users are considered.The detection is power spectral density based . This project gives the lower bound for the
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此程序包含多普勒功率谱,瑞利衰落信道,pdf概率密度等的仿真,且能出图-This program contains a Doppler power spectrum, Rayleigh fading channel simulation, pdf probability density, and can plot
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此程序是用jakes法产生的瑞利衰落信道,程序内包含多普勒功率谱程序,瑞丽衰落程序,概率密度pdf程序。能出图,且压缩包内有仿真图。-This program is Rayleigh fading channel generated by jakes law, within the program that contains the Doppler power spectrum program, Ruili fading program, the probability density pdf
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自谱分析就是对一个信号进行频谱分析,包括幅值谱(PEAK)、幅值谱(RMS)、功率谱和功率谱密度等。-Since spectral analysis is performed on a signal spectrum analysis, including amplitude spectrum (PEAK), amplitude spectrum (RMS), power spectrum and power spectral density.
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毕业设计有用,包含收发两个客户端的链路级通信程序,基于互功率谱的时延估计,已调制信号计算其普相关密度,计算多重分形非趋势波动分析。- Graduation useful Contains two clients receive link-level communications program, Based on the time delay estimation of power spectrum, Modulated signals to calculate its density Pu-r
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有小波分析的盲信号处理,添加噪声处理,基于互功率谱的时延估计,已调制信号计算其普相关密度,包括 MUSIC算法,ESPRIT算法 ROOT-MUSIC算法。- There Wavelet Analysis Blind Signal Processing, Add noise processing, Based on the time delay estimation of power spectrum, Modulated signals to calculate its density Pu-
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计算目标和海洋回波的功率谱密度,是小学期课程设计的题目,能量谱分析计算。- Calculating a target and ocean echo power spectral density, Is the topic of the elementary school stage curriculum design, Energy spectrum analysis and calculation.
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psd函数求功率谱密度并与davenport谱比较-The power spectral density of PSD function and comparison with Davenport spectrum
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第一个程序为模拟产生一个正态随机序列X(n),画出产生的随机序列波形、相关函数(与理论曲线对比)
和功率谱密度。第二个程序为产生一个信号X(n),绘出信号及其幅度频谱曲线,当中心频率向左搬移f0=200Hz时,求出其低通等效信号,并绘出其幅度频谱、信号的同相、正交分量及包络。当中心频率向左搬移f0=100Hz时,求出其低通等效信号,并绘出其幅度频谱、信号的同相、正交分量及包络。-The first program to simulate the amount of generating a
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可直接计算得到多重分形谱,计算目标和海洋回波的功率谱密度,一些自适应信号处理的算法。- It can be directly calculated multi-fractal spectrum, Calculating a target and ocean echo power spectral density, Some adaptive signal processing algorithms.
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计算目标和海洋回波的功率谱密度,旋转机械二维全息谱计算的实用例程,有CDF三角函数曲线/三维曲线图。- Calculating a target and ocean echo power spectral density, Rotating Machinery dimensional hologram of practical spectrum calculation routines, There CDF trigonometric curve/3D graphs.
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计算目标和海洋回波的功率谱密度,可直接计算得到多重分形谱,给出接收信号眼图及系统仿真误码率。- Calculating a target and ocean echo power spectral density, It can be directly calculated multi-fractal spectrum, The received signal is given eye and BER simulation systems.
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衰落信道参数包括多径扩展和多普勒扩展。时不变的多径扩展相当于一个延时抽头滤波器,而多普勒扩展要注意多普勒功率谱密度,通常使用Jakes功率谱、高斯、均匀功率谱。-
The fading channel parameters include multipath spreading and Doppler spreading. The time-invariant multipath extension is equivalent to a delay-tap filter, while the
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可直接计算得到多重分形谱,计算目标和海洋回波的功率谱密度,ldpc码的编解码实现。- It can be directly calculated multi-fractal spectrum, Calculating a target and ocean echo power spectral density, Codec ldpc code implementatio.
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分析了该信号的时域、频域、倒谱,循环谱等,计算目标和海洋回波的功率谱密度,车牌识别定位程序的部分功能。- Analysis of the signal time domain, frequency domain, cepstrum, cyclic spectrum, etc. Calculating a target and ocean echo power spectral density, Part of the license plate recognition locator featu
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matlab程序运行时导入数据文件作为输入参数,计算目标和海洋回波的功率谱密度,旋转机械二维全息谱计算的实用例程。- Import data files as input parameters matlab program is running, Calculating a target and ocean echo power spectral density, Rotating Machinery dimensional hologram of practical spectrum calc
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