Allan_Varance

说明：  这是一个基于空时分组编码的MIMO_OFDM通信系统的仿真设计。此系统包括QPSK调制调，IFFT调制，空时编解码，基于训练符号的信道估计等通信模块。(main_STBC_MIMO_OFDM.m)

应用于单支路输入，多支路输出的分数间隔忙估计恒模算法(application for single intput mutiple output whicn used to fraction score interval blind equlization for cma)

1. 识别同一个乐器弹奏出的不同音符（基波分析） 2. 识别弹奏出同一个音符的不同乐器（谐波分析）(1. identify the different notes played by the same instrument (fundamental analysis). 2. identify different musical instruments playing the same note (harmonic analysis).)

point detect introduction and implement the concept recommended

基于雷达定位的高精度无线定位系统，一维精度可达1cm，二维精度可达5cm(High-precision radar-based wireless location positioning system, the one-dimensional accuracy of up to 1cm, dimensional accuracy is up to 5cm)

三相整流后逆变，电流滞环控制永磁电机，效果还不错(After the three-phase rectifier inverter, the current hysteresis control of permanent magnet motor, effect is good)

Wavelet denoising For using this code need to use signal toolbox and general toolbox in your matlab In the first part of this assignment, we asked to obtain a (black-and-white) digital image of size 512 by 512 and then generate noisy image by adding a Gaussian noise but under the condition of having SNR=20dB by select the suitable value of variance for Gaussian noise formula. Second step is performing wavelet denoising using the hard thresholding (Use the db 6 for four levels) in the condition of finding the optimal thresholding value of T in terms of the SNR obtained. It means that, we should find the highest SNR value by finding the suitable value for threshold. Then we asked to do the same process but this time using soft thresholding. Finally for the last part of question one, we should compare the results of the obtained SNR with the recommendations of 3*sigma for the hard thresholding and 3/2*sigma for the soft thresholding.

cdma oqpsk解调程序， matlab例程， 可以直接使用。(cdma oqpsk demod)

有关于多项式/曲线拟合的一些例题代码，一共有7个*.m文件(There polynomial/curve fitting some examples of code, a total of 7*. M file)

说明：  里面有三个二维模糊调节器分别实现PID控制器的参数Kp，ki，Kd，的调节。其控制原理：根据前面的偏差e和偏差变化ec将三个模糊控制器FC1,FC2,FC3分别进行模糊化，模糊逻辑推理，解模糊化。最后得到pid控制器参数调节量。(There are three two-dimensional fuzzy controller to achieve PID controller parameters were Kp, ki, Kd, of the regulation. The control principle: According to the previous error e and error change ec the three fuzzy controller FC1, FC2, FC3 were fuzzy, fuzzy logic, defuzzification. Finally, adjust the controller parameters by pid.)