Search - Power Spectral Density

[Mathimatics-Numerical algorithms] psd

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: 24159 | Author: lkz | Hits:

[Other resource] exam1_sin

Description: 本程序用于实现求解并绘制正弦信号功率谱密度的功能-procedures used to achieve the solution and the mapping of sinusoidal signal power spectral density function
Platform: | Size: 1316 | Author: 陈华 | Hits:

[Other resource] exam1_ami

Description: 本程序能够产生ami码，并且能够绘制其波形图和功率谱密度图-the procedure can have ami yards, and can draw its waveform and power spectral density map
Platform: | Size: 1390 | Author: 陈华 | Hits:

[Other resource] MAR1PSD

Description: Routine mar1psd: To compute the power spectum by AR-model parameters. Input parameters: ip : AR model order (integer) ep : White noise variance of model input (real) ts : Sample interval in seconds (real) a : Complex array of AR parameters a(0) to a(ip) Output parameters: psdr : Real array of power spectral density values psdi : Real work array in chapter 12-Routine : To compute the power spectum by AR-model parame dreadful. Input parameters : ip : AR model order (integer) ep : White noise variance of model input (real) ts : Sample interval in seconds (real) a : Complex array of AR parameters a (0) to a (ip) Out put parameters : psdr : Real array of power spectral density values psd i : Real work array in chapter 12
Platform: | Size: 851 | Author: king_key | Hits:

[Other resource] periodogram

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: | Size: 6854 | Author: lidong | Hits:

[Other] nrzrz

Description: 双极性不归零码、双极性归零码和差分码的时域及功率谱密度图的绘制-bipolar not NRZ, bipolar NRZ and difference time-domain code and power spectral density Map
Platform: | Size: 1822 | Author: LD | Hits:

[Other resource] matlabzixiangguan

Description: 用matlab产生自相关系数固定的序列,然后再观察其功率谱密度.-using Matlab correlation coefficient derived from the fixed sequence, and then observed its power spectral density.
Platform: | Size: 1001 | Author: 启明星 | Hits:

[Other resource] guzhangzhenduanprogram

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: | Size: 17462 | Author: suzhixiao | Hits:

[Other resource] PSD_Matlab

Description: MATLAB计算功率谱密度PSD的源代码-MATLAB power spectral density of the source code
Platform: | Size: 3021 | Author: 郑良德 | Hits:

[Other resource] wavelet_filter

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: | Size: 1611 | Author: youyou | Hits:

[Software Engineering] Y847565

Description: 提高卫星通信信道传输效率的新途径本文结合 V SAT卫星通信系统设计中涉及卫星通信传输技术极为重要的信道编码与调制解调方式，探讨了各种新型的卫星信道编码与调制解调技术，它们的原理及在卫星通信中的应用。在数字调制中，信号传输质量主要取决于比特差错率BER (Bit Error Rate)，因此要尽可能采用相同的每比特信号能量与噪声功率谱密度比(Eb/N.)的条件下，BER低的调制方式，以节省卫星功率另外频带利用率要尽可能的高，以节省宝贵的卫星频带。本文还对各种不同的差错编码与调制技术进行了实验和详细的性能比较。-improve satellite communications channel transmission efficiency of new ways this paper V SAT satellite communications system design involving Wei Star Communication Technology extremely important channel coding and modulation and demodulation, explore a variety of new satellite channel coding and modulation and demodulation techniques, their principles and satellite communications applications. Digital modulation, signal transmission depends on the quality of the main bit error rate BER (Bit Error Rate). therefore possible to use the same energy per bit signal with noise power spectral density ratio (Eb / N.), under the condition BER low modulation mode to save power satellite bandwidth utilization addition to the possible high to save valuable satellite frequency bands. This paper is als
Platform: | Size: 3829873 | Author: 亮仔 | Hits:

[Other resource] ARTnn

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: | Size: 3521 | Author: 谢灵心 | Hits:

[Other resource] featrue7

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: | Size: 7272 | Author: 谢灵心 | Hits:

[matlab] demo_danjiNRZ

Description: 系带传输，单极性不归零码的编码，产生还有功率谱密度图，调试好的，直接运行-Department of belt transmission, not unipolar NRZ encoding, resulting in power spectral density diagram there, debugging good directly run
Platform: | Size: 1024 | Author: 连自锋 | Hits:

[Other] 8dpsk

Description: 8dpsk调制系统的性能仿真，误符合率、功率谱密度图等-8dpsk modulation performance of the system simulation, error in line with the rate, power spectral density map
Platform: | Size: 2048 | Author: 王肖肖 | Hits:

[Algorithm] POWER-CONTROL-ALGORITHM

Description: A closed-loop power control system having both fixed-step and adaptive-step power control algorithms and incorporating with multitap RAKE receivers was proposed. Simulations were performed for wide-band radio channels having path loss, slow fading, and fast fading. As the measurement of the received power and the bit energy-to-interfkrence power spectral density ratio play an important role in a CDMA power control system, a scheme to estimate these two parameters was proposed. For a Rayleigh fading channel and a Rician fading channel having a K factor of 6dB, a three-tap RAKE receiver is desirable.
Platform: | Size: 53248 | Author: nani | Hits:

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