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performanceimprovementwithpredictivechannelselecti
基于信道的历史信息来预测不同信道的未来可用时间可以帮助CR选择一个最佳信道进行信息传递。不同的预测准则应用到周期或是随机的开关模式中。一个CR可以学习以往不同信道的模式。我们提出一个简单的分类和学习方法去检测模式的类型和收集需要的信息用于智能信道的选择。MATLAB仿真结果显示提出的方案在随机信道的随机和周期模式中都有优越的表现。随着时间的变化，新到的切换次数减少到55 ，并且延迟时间也相应减少，而吞吐量却在提高。(Prediction of future availability times of different
channels based on history information helps a cognitive radio
(CR) to select the best channels for control and data
transmission. Different prediction rules apply to periodic and
stochastic ON-OFF patterns. A CR can learn the patterns in
different channels over time. We propose a simple classification
and learning method to detect the pattern type and to gather the
needed information for intelligent channel selection. Matlab
simulations show that the proposed method outperforms
opportunistic random channel selection both with stochastic and
periodic channel patterns. The amount of channel switches
needed over time reduces up to 55 , which reduces also the
delay and increases the throughput.)
- 2010-06-29 19:26:28下载
- 积分：1
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three_dim_plot
The model used for creating the reference voltage is shown
in Fig. 4. First, photovoltaic output current (Ipv) and output
voltage (Vpv) are passed through a first order low pass filter
with a magnitude of G = 1 and a time constant of T = 0.01
seconds in order to filter out the high frequency components
or harmonics from these signals as shown in Fig. 5 and Fig. 6.
The filtered current and voltage signals (Ipv_F and Vpv_F) are
then fed into the MPPT control block that uses the Incremental
Conductance Tracking Algorithm. An algorithm that is based
on the fact the slope of the PV array power curve shown in
Fig. 7 is zero at the Maximum Power Point (MPP), positive on
the left of the MPP, and negative on the right. The MPP can
thus be tracked by comparing the instantaneous conductance
(I/V) to the incremental conductance (∆ I/∆ V) [11] as in (1):
- 2013-07-23 17:56:06下载
- 积分：1
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Entropy_web_code
盲源分离；非参数核熵估计；两种计算核的算法，速度更快(Blind Source Separation；non-parametric kernel entropy estimation；two different accelerated kernel algorithms；more volecity)
- 2012-04-05 13:06:47下载
- 积分：1
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lms-mismatch
对基于LMS算法的通道失配校正模型进行仿真。仿真不同信噪比条件下校正前后的通道失配度改善情况，参考信号为叠加有噪声的随机方波信号。(LMS algorithm based on channel mismatch correction model for simulation. Channel mismatch before and after the correction to improve the signal to noise ratio of different simulation conditions, the reference signal is a random noise superimposed on a square wave signal.)
- 2014-10-13 10:03:39下载
- 积分：1
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softsource
二维FDTD仿真soft source入射到有限区域边界后的传播，区域中间放置了一块pec，并且设定了ABC边界条件，可以自动生成关于Ez，Hx和Hy的.avi文件，播放脉冲动态传输。(Dimensional FDTD simulation soft source is incident to spread limited area boundary after placing a piece of the middle region pec, and set the ABC boundary conditions, can automatically generate .avi files on Ez, Hx and Hy, and play dynamic pulse transmission.)
- 2014-11-06 06:50:26下载
- 积分：1
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Szeliski.CV
Computer Vision: Algorithms and Applications
Richard Szeliski
September 3, 2010 draft
⃝ c 2010 Springer
- 2014-10-11 00:08:40下载
- 积分：1
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ieee_tx11ac
802.11 a/g/n/ac 发射机matlab代码，包含详细说明文档(802.11 a/g/n/ac transmitter code，including the ref document)
- 2021-05-06 20:58:37下载
- 积分：1
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chapter7
本文主要介绍了数字信号的基带传输原理及其在systemview下的实现方法(In this paper, the digital baseband signal transmission principle and its implementation under way in systemview)
- 2010-07-28 15:06:14下载
- 积分：1
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wireless_COST231_hata_attenuation
wireless_COST231_hata_attenuation在matlab下的仿真(wireless_COST231_hata_attenuation in matlab simulation)
- 2008-05-20 23:51:01下载
- 积分：1
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ImageProcessing
对一幅图像加入高斯噪声和椒盐噪声后，分别进行均值滤波和中值滤波，比较两种滤波方法的优缺点(Of an image by adding Gaussian noise and salt and pepper noise, the mean filter, respectively, and median filtering, comparing the advantages and disadvantages of the two filtering methods)
- 2010-12-01 16:44:56下载
- 积分：1
