matrix

用回声隐藏方法实现数字水印的许多程序，欢迎共享(This is some water echo code,I spend a lot of time on it.)

说明：  自己用simulink搭建的FSK相干解调模型（有误码率分析）欢迎改进和交流 (Own use to build the FSK coherent demodulation simulink model (with bit-error rate analysis) welcomed the improvement and the exchange of)

Beam space MUSIC algorithm source beam space MUSIC algorithm source

Least Mean Square algorithm

《MATLAB及在电子信息课程中的应用》一书由陈怀琛编著<br>MATLAB语言具备高效、可视化及推理能力强等特点，在日前工程界是流行最广的科学计算语言。(" MATLAB and electronic information in the application of the curriculum," a book edited by陈怀琛<br> MATLAB language with high-performance, visualization and reasoning ability and other characteristics of the engineering in a few days ago is the most widely popular language of scientific computing.)

source code of simlate function of fuzzy bp neural network

说明：  三次样条插值，三弯矩法计算，曲线拟合，求插值点的函数值，一阶导数，二阶导数(Cubic spline interpolation, three-moment method, curve fitting, interpolation points demand function values, first-order derivative, second derivative)

说明：  采用FDTD方法计算了2维光子晶体TM模的传播情况，能较直观的观察波形变化。(FDTD method using a 2-dimensional photonic crystal propagation of TM modes, can be more intuitive observation of the waveform changes.)

简单的高通、低通、带通滤波器程序，初学者适用(filter program)

FSK 信号的循环谱程序，验证了是正确的(The cycle of FSK signal spectrum procedure, verify the is correct)