periodogram

these m file can generate walsh sequence , gold sequence and walsh&m multiplexed sequence and can compute two sequences s correlation properties.

本文件是用一个简单的S-function来显示一个图形的大小方便后续处理(This document is a simple S-function to display the size of a graphics processing to facilitate follow-up)

load flow for ds having main line only

卡方检验，通过matlab输入理论频数，直接得出检验结果(Chi-square test, through matlab input frequency theory, the test results obtained directly)

SVM（支持向量机）参数寻优代码，可自动实现支持向量机的参数寻优(SVM (support vector machine) parameter optimization code that can automatically support vector machine parameter optimization)

預失真是一種用於改善無線電發射機放大器線性度的技術。大多數電信系統中的無線電發射機放大器需要是“線性的”，因為它們必須準確地再現其輸入端存在的信號。 壓縮其輸入或具有非線性輸入/輸出關係的放大器導致輸出信號濺到相鄰的射頻上。 這會對其他無線電信道造成乾擾。(Predistortion is a technique used to improve the linearity of radio transmitter amplifiers. Radio transmitter amplifiers in most telecommunications systems are required to be "linear", in that they must accurately reproduce the signal present at their input. An amplifier that compresses its input or has a non-linear input/output relationship causes the output signal to splatter onto adjacent radio frequencies. This causes interference on other radio channels.)

接触网固有频率计算程序，可根据注释输入接触网参数，利用求结构矩阵特征值的方法求取接触网的固有频率…(Catenary natural frequency calculation program, according to the catenary comment input parameters, the use of structural matrix eigenvalue seeking ways to strike a catenary natural frequency ...)

使用matlab编程，实现文件数据游程编码、（7，4）线性码、模拟二元传输信道(Using matlab programming, file data length coding, (7,4) linear code, binary transmission channel simulation)

对曲线进行了拟合 可以自动成图处理 很不错的算法(Of the curve were fitted to deal with a very good automatic mapping algorithm)

这是一个用于线性调频雷达信号代码，可供参考(This is a code for linear FM radar signal, for reference)