viterbi

说明：  matlab中用于数值积分的工具箱 解压后copy到matlab安装目录下toolbox文件夹下(toolkit for numerical equation)

时域有限差分法-2维自由空间传输电磁场分布(Finite Difference Beam Propagation Method)

一份英文的讲义，讲述了在多径条件下多普勒频移对无线通信的影响。并对各种条件用MATLAB进行了仿真。(An English lecture, described the conditions in the multi-path Doppler frequency shift of the impact of wireless communications. Various conditions and conducted a simulation using MATLAB.)

说明：  最小二乘法的matlab语言，需要的下起(Least squares method of matlab language, the need for the next starting)

干扰观测器的，即DOB实现，提供详细的matlab代码。(Disturbance Observer.)

Describe a Efi in a transformer

可以对信号进行三点五次滤波，减少外在环境对数据造成的干扰(Three points five times the signal can be filtered to reduce the interference caused by the external environment on the data)

说明：  无网格法2D悬臂梁算例 Nitscha法施加边界条件(Meshless method)

1．窗口法设计FIR数字滤波器。 2．以Butterworth 模拟低通滤波器为原型，设计IIR数字滤波器。(1. Window Design of FIR digital filter. 2. In order Butterworth analog low-pass filter for the prototype, design IIR digital filter.)

用matlab语言编程一种4节点三角形单元划分网格的程序(a program which displays any single basis function associated with an arbitrary 4-node triangle T4 mesh)