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OFDM__explaination
orthogonal frequency division multiplexing using wireless networks
- 2010-12-17 00:07:39下载
- 积分：1
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bianzhi
两点边值问题，微分方程数值解法，数值分析作业(Boundary Value Problems, Numerical Solution of Differential Equations)
- 2020-07-04 19:20:02下载
- 积分：1
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Grid_connected-_PV_Fuzzy_MPPT-cell_model
Grid_connected _PV_Fuzzy_MPPT-cell_model
- 2020-11-04 17:19:51下载
- 积分：1
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小波神经网络的时间序列预测-短时交通流量预测
本文采用小波神经网络进行交通流量预测，短时交通流量存在随机性和非线性因素，影响预测的准确性。传统预测模型难以反映交通流量变化特点，同时传统神经网络易陷入局部极小值，泛化能力差，交通流量预测精度低。为了提高短时交通流量预测精度，提出一种小波神经网络的短时交通流量预测模型。小波神经网络可以对短时交通流量随机性、不确定性进行局部分析，并进行非线性预测，验证了模型的有效性，进行了对比试验。验证结果表明，小波神经网络提高了短时交通流量预精度，预测结果更具应用价值。(In this paper, wavelet neural network is used to forecast traffic flow. There are random and nonlinear factors in short-term traffic flow, affecting the accuracy of prediction. The traditional prediction model is difficult to reflect the characteristics of traffic flow changes. At the same time, the traditional neural network is easy to fall into the local minimum, the generalization ability is poor, and the prediction accuracy of traffic flow is low. In order to improve the accuracy of short-term traffic flow forecasting, a short-term traffic flow prediction model based on wavelet neural network is proposed. The wavelet neural network can analyze the randomness and uncertainty of short-term traffic flow and perform nonlinear prediction. The validity of the model is verified and a comparative experiment is conducted. The verification results show that the wavelet neural network improves the short-term traffic flow pre-precision, and the prediction result has more application value.)
- 2021-03-17 16:09:21下载
- 积分：1
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qpsk
运用matlab,采用QPSK调制与解调，包括串并转换，傅立叶变换与逆变换，信道估计（采用LS准则），多普勒频移等模块，内容清晰明了。(Use matlab, using QPSK modulation and demodulation, including string and conversion, Fourier Transform and inverse transform, channel estimation (LS criteria used), Doppler frequency shift modules, content clarity.)
- 2021-04-16 16:28:53下载
- 积分：1
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Image-Expand-Program
matlab中图像展开说明，适用于matlab中，很好的程序(matlab in image deployment instructions for matlab in a very good program)
- 2013-08-07 20:13:39下载
- 积分：1
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GUI_PR_SVM
具有图形操作界面的支持向量机多类分类实验系统.全部用Matlab实现,可以实现多种分类识别. 这是本人的毕业设计的附属程序(graphical interface with support vector machines more experimental classification system. All using Matlab, could achieve multiple classification. This is my graduation design procedures for the subsidiary)
- 2006-10-18 09:41:14下载
- 积分：1
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daichuan
对堆场内等待装船的集装箱的计算和模拟
集装箱是分段(container matlab)
- 2012-05-08 18:16:48下载
- 积分：1
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xiaobobao
ch3=softt(h3,thr1 clear
clc
I=imread( lena512.bmp )
imshow(I)
I=double(I)
II=I+30*randn(size(I))
figure
imshow(II,[])
[a1,h1,v1,d1]=dwt2(II, sym8 )
[a2,h2,v2,d2]=dwt2(a1, sym8 )
[a3,h3,v3,d3]=dwt2(a2, sym8 )
sigma=median(abs(d1(:)))/0.6745
x=3*sigma
thr1=x*2^(-1) thr2=x*2^(-0.5) thr3=x 小波图像去噪( ch3=softt(h3,thr1 clear
clc
I=imread( lena512.bmp )
imshow(I)
I=double(I)
II=I+30*randn(size(I))
figure
imshow(II,[])
[a1,h1,v1,d1]=dwt2(II, sym8 )
[a2,h2,v2,d2]=dwt2(a1, sym8 )
[a3,h3,v3,d3]=dwt2(a2, sym8 )
sigma=median(abs(d1(:)))/0.6745
x=3*sigma
thr1=x*2^(-1) thr2=x*2^(-0.5) thr3=x )
- 2012-05-26 11:08:34下载
- 积分：1
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analysis-of-network-traffic-data
针对某个网络流量数据进行分析详细示例，包括实验报告和matlab详细源码程序(For a detailed analysis of network traffic data sample, including lab reports and detailed source program matlab)
- 2011-10-04 16:27:11下载
- 积分：1
