TDOAAOA

semivariogram structure function ,it is about 2D semivariogram.

bfp is an mathematical algortithem

耳蜗实质上相当于一个滤波器组，耳蜗的滤波作用是在对数频率尺度上进行的，在1000HZ下，人耳的感知能力与频率成线性关系；而在1000HZ以上，人耳的感知能力与频率不构成线性关系，而更偏向于对数关系，这就使得人耳对低频信号比高频信号更敏感。Mel频率的提出是为了方便人耳对不同频率语音的感知特性的研究。频率与Mel频率的转换公式为(Cochlear substantially equivalent to a filter set, cochlear filter is used on logarithm frequency scale, under the 1000 hz, the perception of the human ear and a linear relationship with frequency In more than 1000 hz, the perception of the human ear does not constitute a linear relationship with frequency, and prefer to logarithmic relationship, which makes the human ear is sensitive to low frequency signal is better than high frequency signal. Mel frequency is put forward in order to facilitate the ear of the study of speech perception characteristics of different frequency. For frequency and Mel frequency conversion formula )

QPSK波形及其经过带宽为4hz的带通滤波器(QPSK waveform and its after 4HZ bandwidth of the bandpass filter)

plot function maximum and minimum matlab

最速下降法，优化算法的一种，具有二次收敛性，若目标函数为二次正定函数，经有限步可达到极小点(Steepest descent method, an algorithm with quadratic convergence, if the objective function is quadratic positive definite function can be achieved by the finite step minima)

Book of the solutions from the chapman book version 3

使用matlab仿真OFDM。其中描述了OFDM的基本原理，含详细的公式推导过程。在文章最后附有matlab代码，并且有仿真结果可参考。(Matlab simulation using OFDM. Describes one of the basic principles of OFDM, with a detailed formula derivation process. At the last article with matlab code, and have the simulation results can be found.)

实现频分复用的调制的matlab的程序代码，带英文注释．(Realize the OFDM modulation matlab code, with English Notes.)

STBC程序源文件，可以供初学者学习交流使用(STBC program for beginners to learn the exchange of)