echocancelling

光子晶体谐振腔的详细matlab编码，详细仿真了光在晶体谐振腔里的传播方式和特点。希望能从中领略编程的强大优势。 (photonic crystal resonant cavities)

bat algorithm for optimization

Plots a polar figure in dB

matlab编写的16QAM的调制解调程序，可以通过修改得到32QAM和64QAM的调制解调程序(matlab prepared 16QAM modulation demodulation process can be by modifying the 32QAM and 64QAM modulation and demodulation procedures)

说明：  matlab 小波分析-张丰德 这本书里所有的源代码(matlab wavelet analysis- Zhang Fengde this book all the source code)

Image encryption using bitplanes, first image decomposed into their bitplanes,some key image applied for encryption,it will be decrypted if and only if exact key used.

interface C++ to Matlab

非常好的三相整流与逆变控制，适合广大初学者学习(Very good three-phase rectifier and inverter control, suitable to the beginners to learn )

calc md machin trualaz zzzzeaze

程序用matlab编写的三层介质射线追踪，可以绘制射线的路径，也可以显示波形~(using matlab make three layer medium ray tracing program , can draw the path of rays, can also display waveform ~ )