Description: 计算ARMA(p，q)模型的功率谱密度。
形参说明：
b——双精度实型一维数组，长度为(q+1),存放ARMA(p，q)模型的滑动平均系数。
a——双精度实型一维数组，长度为(p+1),存放ARMA(p,q)模型的自回归系数。
q——整型变量,ARMA(p,q)模型的滑动平均阶数。
p——整型变量,ARMA(p,q)模型的自回归阶数。
sigma2——双精度实型变量,ARMA(p,q)模型白噪声激励的方差。
fs——双精度实型变量,采样频率(Hz)。
x——双精度实型一维数组,长度为len。当sign＝0时，存放功率谱密度；当sign＝
1时，存放用分贝表示的功率谱密度。
freq——双精度实型一维数组，长度为len。存放功率谱密度所对应的频率。
len——整型变量，功率谱密度的数据点数。
sign——整型变量,当sign＝0时，计算功率谱密度；当sign＝1时，计算用分贝表
示的功率谱密度。
-calculated ARMA (p, q) model of the power spectral density.- Participation : b-- double-precision real one-dimensional arrays, length (q 1), storage ARMA (p, q) model of the average coefficient of sliding. A-- double-precision real one-dimensional arrays, length (p 1), storage ARMA (p, q) model of regression coefficients. Q-- integer variables, ARMA (p, q) moving average model of order. P-- integer variables, ARMA (p, q) model of order since the reunification. Sigma2-- double precision real-type variables, ARMA (p, q) model white noise variance. Fs-- double precision real-type variables, sampling frequency (Hz). X-- double-precision real one-dimensional array, the length of len. When the sign = 0, storage power spectral density; When the sign = 1:00, storage decibel levels, said th Platform: |
Size: 23552 |
Author:lkz |
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Description: 本程序是功率谱密度的仿真比较,关于三个信号源的具体情况参见《现代数字信号处理导论》上册，P202，习题5。
实验方法：周期图法、自相关法和协方差法。
-this procedure is the power spectral density of the simulation, 3 signal source on the specific circumstances, see the "modern digital signal processing" Introduction to the first volume, P202, Exercise 5. Experimental Methods : Chart cycle, since the correlation and covariance method. Platform: |
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Description: 自己编写的比较全面的故障诊断matlab函数程序，包括统计法、时域法、时间序列法、频谱及功率普密度函数、小波分析法程序中有详细的说明。-their preparation of a more comprehensive fault diagnosis Matlab function procedures, including statistics, time domain, time series, and power spectral density function Pronk, wavelet analysis procedures are described in detail. Platform: |
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Description: 这是一个用小波对含噪信号进行滤波处理的程序，程序中还包括了功率谱密度分析等。-This is a wavelet of noisy signal filtering procedures, procedures also include the power spectral density analysis. Platform: |
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Description: 输入信号五个基于瞬时信息的特征：零中心归一化瞬时幅度功率谱密度的最大值,零中心归一化瞬时幅度绝对值的标准偏差，零中心非弱信号段瞬时相位非线性分量绝对值标准偏差，零中心非弱信号段瞬时相位非线性分量标准偏差，零中心归一化的非弱信号段瞬时频率绝对值的标准偏差，得到识别出的信号类别，本例为2PSK, 4PSK, GMSK, OQPSK, pi/4DQSK中的一个，还可以看Art网络的扩展性。-input signal instantaneous information on five characteristics : In the center is one of the instantaneous rate of the power spectral density of the maximum, is a center to the absolute value of the instantaneous rate of the standard deviation, Non-zero weak signal instantaneous phase of the nonlinear component absolute standard deviation, Non-zero weak signal instantaneous phase of the nonlinear component standard deviation, In the center is one of the non-weak signal of the absolute value of the instantaneous frequency standard deviation, the identification of signal type, The cases of two PSK, 4PSK, GMSK, OQPSK, pi/4DQSK of one, Art can be viewed network scalability. Platform: |
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Description: 提取信号七个基于瞬时信息的特征：零中心归一化瞬时幅度功率谱密度的最大值,零中心归一化瞬时幅度绝对值的标准偏差，零中心非弱信号段瞬时相位非线性分量绝对值标准偏差，零中心非弱信号段瞬时相位非线性分量标准偏差，零中心归一化的非弱信号段瞬时频率绝对值的标准偏差，一个信号段的归一化瞬时频率功率谱密度的最大值，根据信号 QPSK 和16QAM在 XI 轴投影的不同表现，提出特征参数。-extract information based on the instan eous features : In the center is one of the instantaneous rate of the power spectral density of the maximum, is a center to the absolute value of the instantaneous rate of the standard deviation, Non-zero weak signal instantaneous phase of the nonlinear component absolute standard deviation, Non-zero weak signal instantaneous phase of the nonlinear component standard deviation, In the center is one of the non-weak signal of the absolute value of the instantaneous frequency standard deviation, a signal to one of the instantaneous frequency of the power spectral density of the maximum, According to 16QAM and QPSK signals XI axis projection in the different performance parameters raised. Platform: |
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Description: 实现差分编码和数字分相码的波形以及功率谱密度的仿真，取样点数默认为2^14。-achieve Differential encoding and digital Phase code and the waveform of the power spectral density of simulation, The default sampling points for 14 ^ 2. Platform: |
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Description: 此程序由matlab实现,用于对语音信号的功率谱密度进行估计.希望能有所帮助.-this procedure from Matlab realized, for the speech signal power spectral density estimation. hope to be helpful. Platform: |
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Description: 可实现QAM的星座图输出，仿真波形图输出，功率谱密度输出-Can be achieved QAM constellation diagram of the output, simulation waveform output, power spectral density output Platform: |
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Description: 数字信号的传输：1、实现滚降系数分别为0，0.5，1时信号时域频域和功率谱密度以及眼图的波形，并比较异同。
2、对(2/4/8)PSK,DPSK通信系统进行蒙特卡罗仿真，通过功率谱密度、误比特率来比较他们的性能(采用最佳接收方式)。
-Digital signal transmission: 1, to achieve roll-off coefficients were 0,0.5,1 time domain when the signal frequency and power spectral density, as well as eye-diagram of the waveform, and compare the similarities and differences. 2, (2/4/8) PSK, DPSK communication system, Monte Carlo simulation, through the power spectral density, bit error rate to compare their performance (to adopt the best way to receive). Platform: |
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Description: 通信信号matlab仿真数字基带信号pam的波形及功率谱密度 -Communication Signal matlab simulation pam digital baseband signal waveforms and power spectral density Platform: |
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Description: 通信原理功率谱密度的仿真程序MATLAB中开发-Communication Theory power spectral density of the simulation program developed in MATLAB Platform: |
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Description: 抑制载波双边带调幅和解调的实现,
Matlab代码编写实现.
采用Matlab或者其它软件工具实现对信号进行抑制载波双边带调幅（DSB-SC）和解调，并且绘制：
（1）信号 及其频谱；
（2）载波 ；
（3）DSB-SC调制信号及其频谱；
（4）DSB-SC调制信号的功率谱密度；
（5）相干解调后的信号波形。
-Carrier suppression bilateral with the realization of amplitude modulation and demodulation, Matlab code prepared to achieve. Using Matlab or other software tools to achieve suppression of signals with carrier bilateral AM (DSB-SC) and demodulation, and mapping: (1) signal and its spectrum ( 2) Carrier (3) DSB-SC modulated signal and its spectrum (4) DSB-SC modulation signal power spectral density (5) coherent demodulation signal waveform. Platform: |
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Description: 完整的ofdm程序，里面给出了功率谱密度的分析过程，比较精简实用-Ofdm complete procedure, which gives the power spectral density analysis of the process more streamlined and practical Platform: |
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Description: 给定一个音频范围内的模拟强噪声随机信号（强噪声+周期信号），将信号从强噪声中提取出来，并计算原信号及提取信号的均值、平均功率、方差、频谱及功率谱密度、互相关等 并附带图形-Given within the scope of an audio simulation of strong noise random signal (noise+ periodic signal), the signal from strong noise in the extracted and calculated signals and extract the original signal of the average, average, variance, spectrum and power spectral density , such as inter-related and incidental graphics Platform: |
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Description: 计算两个信号的功率谱密度，通过两个信号的谱相关系数决定频点是否参与叠加计算，以控制功率谱密度质量。-Calculation of the two signal power spectral density, spectral signals through two related factors involved in the decision whether or not frequency superposition calculation, in order to control the quality of the power spectral density. Platform: |
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Search - Power Spectral Density