yuyinchuligjx

ann matlab neural network

PCA MATLAB CODE AND SLIDES

SIGMA DELTA MODULATOR

低通滤波，属于频域滤波，先做傅里叶变换，再把中心移到原点，距离中心远的代表噪声信息，舍去(low-pass filter in Fourier domain)

Arithhmetic coding of a file

johnson-cook理论的umat程序，此程序可以带入abaqus，然后计算应力(johnson-cook umat code)

光子晶体 matlab it computed photonic crystal waveguide band gap, it is very useful(photonic crystal matlab it computed photonic crystal waveguide band gap, it is very useful)

对于一幅彩色图像来说，可以对于三个通道进行分别梯度，然后选取最大值组成一幅梯度图像(color gradient matlab)

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.)

ICALAB for Signal Processing Toolbox for BSS, ICA, cICA, ICA-R, SCA and MCA