qpsk_awgn

利用周期图法对信号进行功率谱估计，源代码，有详细的注解，供参考(Periodogram method using the signal power spectrum estimation, source code, there are detailed notes for reference)

说明：  用频域和时域的方法分别来算光子晶体光纤的一篇文章(With the frequency domain and time domain methods to balance the respective article in photonic crystal fiber)

Define the input signal

使用Matlab产生各种窗函数的语句，对各种语句有较为仔细的介绍(Matlab is used to generate the statements of the various window functions have a more detailed introduction to the various statements)

对信号进行设定层数的小波分解。只输入参数信号、层数及小波类型即可，里面有验证程序。(Decompose the signal with the layer you set.Just input parameter signal, the number of layers and wavelet types.)

可用于分析混沌时间序列 C-C方法分析混沌时间序列(Can be used for the analysis of chaotic time series analysis of chaotic time series CC)

说明：  这是一个很好的用于psk的信道估计算法，包括瑞利衰落信道的估计，并有完整的检测程序。(This is a good channel for psk estimation algorithm, including the Rayleigh fading channel estimates, and a complete testing process.)

一个遗传算法优化二阶函数的程序，非常适合学习遗传算法的初学者(GA(Generic Algorithm)toOptimize)

matlab is...... source code program

Trigonometric functions using MATLAB to achieve power spectral analysis