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说明：  这是瑞利信道中有关多普勒频移的多径信道和单径信道的相关matlab仿真程序。(Rayleigh Channel is the Doppler shift of the multipath channel and single-channel tracks of Matlab simulation program.)

非常强大的信号分解算法，NMD（非线性模态分解），比EMD分解效果更好！具有广阔应用前景！(Very powerful signal decomposition algorithm, NMD (nonlinear mode decomposition), better than the EMD! It has broad application prospects!)

此蚁群算法专门用于求解tsp问题，优化效率和鲁棒性都非常好。(this ant colony algorithm tsp devoted to solving problems, and optimize the efficiency and robustness are very good.)

此为matlab函数库，种类齐全，可供用matlab仿真的开发者使用。(malab data)

2FSK是利用数字基带信号控制在波的频率来传送信息。经过调制后的2FSK数字信号通过两个频率不同的带通滤波器f1、f2滤出不需要的信号，然后再将这两种经过滤波的信号分别通过包络检波器检波，最后将两种信号同时输入到抽样判决器同时外加抽样脉冲，最后解调出来的信号就是调制前的输入信号。(gudi hduidf hdag sdd w)

IDWT Transform using wfilters from matlab

matlab中dspbuilder的经典教程，利用直接数字合成DDS为实例，介绍dspbuilder的用法(matlab in dspbuilder classic handbook, the use of direct digital synthesis DDS as an example to introduce the usage of dspbuilder)

时域有限差分法三维自由空间传播电磁场场分布(Finite Difference Beam Propagation Method)

说明：  这是一个MATLAB源代码，可以直接进行GPC仿真。(This is a MATLAB source code can be directly GPC simulation.)

this file is about band structure of 3d photonic crystal.in this program we use the pwe methode for calculation of band structure