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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.)

使用matlab进行机械传动系统的建模与仿真，内容包括ppt文档和模型文件。(Matlab mechanical drive system using modeling and simulation, including model documents and ppt files.)

pvm下实现的mandelbrot程序源码，适合初学者研究(under the procedures mandelbrot source, the study for beginners)

power flow for 69 distribution system

气象色谱波峰波谷检测，比较简单的方法，欢迎大家下载(Meteorological chromatographic peaks and valleys detection)

MATLAB智能算法30个案例分析 源代码 有各种智能算法，如遗传算法，免疫算法，神经网络的实现(Intelligent algorithm MATLAB source code 30 case studies have a variety of intelligent algorithms, such as genetic algorithm, immune algorithm, neural network implementations)

说明：  this is matlab program uses GRNN neural network tocontrol the speed of Linear induction Motor Drive, both m-file and simulink file are includd

IMPMET Standard impedance matrix (metal surface) Returns the complex impedance matrix [EdgesTotal x EdgesTotal] Uses 9 integration points for every triangle (barycentric subdivision) The impedance matrix is calculated as a sum of the contributions due to separate triangles (similar to the "face-pair" method).

BER for QAM modulation in a Rayleigh fading channel with and without transmit beamforming

1SpectralClustering_V1_1 Algorithm