TREE_PFC

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.)

physics car simulation

THis is a presentation on Viola Joans Method and SIFT method introduced by David.G.Lowe

calculation of outage probability

数值计算中机器精度的确定算法 MATLAB源程序 自带注释(machine precision)

在MATLAB中实现用高斯消元法求解线性方程组!(In MATLAB to achieve using Gaussian elimination method for solving linear equations!)

动态仿真作业(隐式梯形积分)说明:1.潮流计算采用直角坐标形式保留二阶项的快速潮流算法 2.暂态稳定分析采用改进欧拉法和直接解法 3.发电机模型为三阶模型 4.励磁是1阶模型 (Dynamic simulation operation (implicit trapezoidal integration) Description: power flow calculation using the rectangular form to retain the second order fast load flow algorithm 2. Transient stability analysis using the improved Euler method and direct solution 3. Generator model threeorder model 4 excitation is an order model )

数学建模基础教程，对于初学者可以参考，很好的基础建模资料(mathematical modeling basic course for beginners can reference, very good base modeling material )

研究生时的现代信号处理的作业，数据模型归一化，模态振动，鲁棒性好，性能优越，数学方法是部分子空间法，使用大量的有限元法求解偏微分方程，搭建OFDM通信系统的框架。(Modern signal processing jobs when the graduate, Normalized data model, modal vibration, Robustness, superior performance, Mathematics is part of the subspace, Using a large number of finite element method to solve partial differential equations, Build a framework OFDM communication system.)

基于Mathcad（也可转为matlab程序）的旋转系绳系统模型，以牛顿力学建模，考虑系绳弹性，可用于任意开普勒轨道建模仿真。(The Mathcad based model of the rotating tether system, which considers the tether elasticity, can be used for arbitrary Kepler orbit modeling and simulation.)