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ebp4
用“提前停止”方法提高BP网络推广能力
本例将用提前停止和训练函数TRAINGDX相结合来避免“过度拟合”产生的误差
(The " early stopping" method to enhance the promotion of BP network capacity will be used in this case in advance and training function to stop the combination of TRAINGDX to avoid " over-fitting" error)
- 2009-05-09 23:48:08下载
- 积分：1
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size_filter
performs connected component labeling and removes noises by using size filter.
- 2010-11-29 08:29:01下载
- 积分：1
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Transmission-Model
无线传感器网络定位用到的无线传输模型
Regular Model, Logarithmic Attenuation Model, DOI Model, RIM Model
(Wireless sensor network localization using wireless transmission model, Regular Model, Logarithmic Attenuation Model, DOI Model, RIM Model
Achieve functional distance and transmission attenuation swap
~~~~~~~~~~~~~~~~~~~~~~Regular Model~~~~~~~~~~~~~~~
In this model, the radio range is a circle
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ReceivedSignalStrength=SendingPower-PathLoss
e.g, RSS=Pt-Pl(d0)-10*η*log10(dist/d0)
Pt:transmit power
pl(d0):the pass loss for a reference distance of d0
ηis the path loss exponent
above parameters are saved in ../Parameters_Of_Models.mat
dist:distance between sender and receiver(m)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
typical value:Pt=0-4dBm(max),Pl(d0)=55dB(d0=1m),η(2~4)=4(indoor,outdoor)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~Logarithmic Attenuation Model~~~~~~~~~
In this model, the radio range is a circle
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ReceivedSignal)
- 2013-08-31 18:59:05下载
- 积分：1
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SNR
求信噪比的MATLAB源代码，用于通信系统学习(the matlab code for work out the SNR，for communication study)
- 2013-10-21 10:30:01下载
- 积分：1
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fx_signal_fft_analysis
一种新的快速傅立叶变换的程序-Matlab实现(A program for a new fast Fourier transform)
- 2014-01-02 13:02:21下载
- 积分：1
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Wiener
设计一维纳滤波器
(1). 产生三组观测数据：首先根据S(n)=aS(n-1)+w(n)产生信号S(n)，将其加噪声(信噪比分别为20db，10db，6db)，得到观测数据X1(n)，X2(n)，X3(n)。.
(2). 估计Xi(n)，i=1，2，3的AR模型参数。假设信号长度为L，AR模型阶数为N，分析实验结果，并讨论改变L，N对实验结果的影响。(Design a Wiener filter
(1) produces three sets of observations: First, according to S (n) = aS (n-1)+ w (n) generates the signal S (n), to add noise (SNR are 20db, 10db, 6db ), obtained observational data X1 (n), X2 (n), X3 (n). .
(2) estimated Xi (n), i = 1,2,3 of the AR model parameters. Assuming the signal length L, AR model order N, the analysis of experimental results, and discuss the changes in L, N to the experimental results.)
- 2012-01-12 10:18:20下载
- 积分：1
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bodong
齐次弦振动方程的MATLAB解法
差分方程解法(Homogeneous vibrating string equation MATLAB Solution of Differential Equation Approach)
- 2012-12-14 15:41:26下载
- 积分：1
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TMS320C54x_4_DQPSK
基于TMS320C54x 实现πP4- DQPSK 调制
信息产业部电子第十研究所(Based on the TMS320C54x implementation πP4-DQPSK modulation 10th Electronics Institute of the Ministry of Information Industry)
- 2009-03-28 19:08:06下载
- 积分：1
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blzpack
Apply the Lanczos filter to a real time series, in the frequency space, i.e., using FFT which is faster than applied as a cosine filter in the time space.
- 2011-05-07 16:04:42下载
- 积分：1
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PID_DIFF
微分先行PID算法Matlab仿真程序。适用于控制工程领域。(Differential forward PID algorithm Matlab simulation program. Applicable to the field of control engineering.)
- 2014-01-09 21:00:30下载
- 积分：1
