xiyinzi

这是按照DTMB电视标准用matlab写的生成LDPC矩阵的源代码，可以运行。(This is a code that is in accordance with the standard DTMB TV source code, written in matlab to generate LDPC matrix and it can be run.)

在matlab中构成不同频率的调制信号，这些函数都是以fm开头，产生常数、双曲线、线性、抛物线等频率调制信号．(in Matlab, constitute a different frequency modulation signal, these functions are beginning to fm, have a constant, hyperbolic, linear, parabolic and other frequency-modulated signal.)

有限元QuadTriangleElement的matlab程序(FEA matlab QuadTriangleElement)

dda画线算法（数值微分法），matlab实现(Line dda algorithm (Numerical Differentiation), matlab achieve)

利用elta-jerk模型进行卡尔曼目标跟踪，跟踪效果良好(Elta-jerk model by Kalman target tracking, tracking well)

用正则化公式X（k+1)=X(k)+t(A Y-A AX(k)-aL LX(k))来恢复图片(using the formula of X（k+1)=X(k)+t(A Y-A AX(k)-aL LX(k)) to resore image)

This is learning Compressed sensing and best K-term Approximation method.

MATLAB coding for QAM BER is given

说明：  数据通道剥离伪码后的载频估计,数据通道剥离伪码后的载波估计问题。对直接序列扩频系统的数据通道，假定接收设备已“完美”地锁定接收信号伪码，并实现了伪码剥离其中，信号幅度、电文、载波多普勒和载波相位均未知。电文的速率为10Hz。由于信源与接收端信号传输时延的不确定性，收到的信号电文是从某个未知时刻开始的。 利用数据文件 估计信号幅度、载波多普勒和载波相位(Data channel after stripping pseudo-code carrier frequency estimation)

基于传递矩阵的方法，计算转子动力学系统临界转速及振型(Critical Speed and Vibration Mode of Rotor Dynamics System Based on Transfer Matrix Method)