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example4_4
例4：在sinc(t)信号中叠加噪声，分析对应频谱
fs=100 采样频率,必须大于两倍基带信号最高频率
ts=1/fs 采样时间间隔
T=2 时间窗大小
(
x=x+0.1*randn(1,N)
x=awgn(x,-10, measured )
figure
plot(t,x)
title( 时域信号图 )
xlabel( t /s )
y=fft(x,N)
figure
if mod(N,2)~=0
N=N-1
end
f=linspace(0,fs/2,N/2)
plot(f,abs(y(1:N/2))*2/N)
title( 叠加噪声的sinc(t)信号频谱 )
xlabel( f /Hz )
figure
y0=y(1:N/2)
P=y0.*conj(y0)/N
P=10*log10(P)
plot(f,P)
title( 功率谱 )
xlabel( f /Hz )
)
- 2010-05-25 20:59:03下载
- 积分：1
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Back_propagationMatlab
Back propagation algorithm implementation in Matlab
- 2013-02-06 15:55:17下载
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LFC-main
说明： 负荷频率控制（LFC）是调整系统的频率达到额定值（如50HZ）或/和维持区域联络线交换功率为计划值。频率稳定是电力系统电能质量的一个重要指标。负荷的任意突然变化都有可能导致系统间联络线交换功率的偏差及系统频率的波动。因此，为保证电能质量，需要一个负荷频率控制(load frequency control,LFC)系统，该系统的目的是将系统频率维持在标称值并且尽可能使控制区域之间的未计划的联络线交换功率最小。(Load frequency control (LFC) is to adjust the frequency of the system to reach the rated value (such as 50 Hz) or / and maintain the exchange power of the regional tie line to the planned value. Frequency stability is an important index of power quality in power system. Any sudden change of load may lead to the deviation of power exchange between tie lines and the fluctuation of system frequency. Therefore, in order to ensure the power quality, a load frequency control (LFC) system is needed. The purpose of the system is to maintain the system frequency at the nominal value and minimize the unplanned tie line exchange power between the control areas.)
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jiefangcheng
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现代功率谱估计中的经典算法：LevinsonDurbin，可以仿照编写出c代码。(Modern power spectrum estimation of the classical algorithm: LevinsonDurbin, can be modeled to write c code.)
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- 2012-09-02 20:42:41下载
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classic-spectrum-estimation
各种经典谱估计的方法，都 是调试好的 ，非常好用。大家都 下载(Classical spectrum estimation, a variety of methods have, very easy to use)
- 2016-03-23 19:06:15下载
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medufjxd
matlab编写的元胞自动机，滤波求和方式实现宽带波束形成，最大似然（ML）准则和最大后验概率（MAP）准则，各种资源分配算法实现，包括最小二乘法、SVM、神经网络、1_k近邻法,关于小波的matlab复合分析，多姿态，多角度，有不同光照,保证准确无误，是学习通信的好帮手。( matlab prepared cellular automata, Filtering summation way broadband beamforming, Maximum Likelihood (ML) criteria and maximum a posteriori (MAP) criterion, Various resource allocation algorithm, Including the least squares method, the SVM, neural networks, 1 _k neighbor method, Matlab wavelet analysis on complex, Much posture, multi-angle, have different light, Ensure accurate communication is learning a good helper.)
- 2016-04-06 21:33:00下载
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shiyan1_2
采用积分器方法在 SIMULINK 上建立微积分方程的模型
(Modeling methods using integral calculus equations on SIMULINK)
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