MATLABFFT-harmonic-analysis

DSL物理层仿真系统 matlab代码，包含了DSL系统物理层的基本模块(DSL physical layer simulation system matlab code, contains the basic module system physical layer DSL)

MATLAB 编程有助于初学者进行学习，了解以及相应的运用(MATLAB programming will help beginners to learn, understand, and use of appropriate)

1在数字信号的调制方式中QPSK是最常用的一种卫星数字信号调制方式,它具有较高的频谱利用率、较强的抗干扰性、在电路上实现也较为简单。 2主要包括QPSK的调制解调(1, in the way of digital signal modulation, QPSK is the most commonly used method of satellite digital signal modulation. It has high spectrum utilization, strong anti-interference and simple implementation on the circuit. 2 mainly includes modulation and demodulation of QPSK)

说明：  一维波动方程的诺依曼计算，可以控制时间范围(Neumann calculation of one dimensional wave equation)

说明：  卡尔曼的二维程序代码，可以让大家了解卡尔曼的二维性质。(kalman)

tow combination or binomial coefficient, factorial and sort function

实现图像的JPEG压缩和解压的 Matlab程序(To achieve the JPEG image compression and decompression of the Matlab program)

1、利用自相关法找出含有大量数据的周期信号的周期 2、利用互相关对齐含有大量数据的多路采样信号以便分析 3、使用分段平滑经过求导后的含有干扰的图像曲线(1, using the autocorrelation method contains large amounts of data to identify the period of the periodic signal 2, using the cross-correlation contains a large amount of data aligned with the sampling signal for the multiplexed analysis, the use of segmented through derivative after smoothing with interference by the image curve)

说明：  信号处理,进行信号检测与处理，通过设定threshold来进行信号检测的可信度调整(Credibility adjustment signal processing, signal detection and processing, by setting threshold for signal detection)

图像处理的梯度算法，本身还行，有兴趣的可以研究一下(Gradient image processing algorithms, their okay, are interested can look at)