MATLAB-VIBIRATION

code for constant modulus algorithm

基于matlab的地震傅式谱编写程序，很有用的一个程序。(Fuh-based seismic spectrum matlab programming, a very useful program.)

for fem matlab for solving all 2D and 3D problem

kp模型matlab仿真，迟滞非线性的KP算子，描述压电、磁控形状记忆合金等。(KP model matlab simulation, the hysteresis nonlinearity of KP operator, describe the piezoelectric, magnetic control shape memory alloy, etc.)

研究生时的现代信号处理的作业，直线阵采用切比学夫加权控制主旁瓣比，数据模型归一化，模态振动，基于kaiser窗的双谱线插值FFT谐波分析，通过matlab代码，自己编的5种调制信号，一种噪声辅助数据分析方法。( Modern signal processing jobs when the graduate, Linear array using cut than learning laid upon the right control of the main sidelobe ratio, Normalized data model, modal vibration, Dual-line interpolation FFT harmonic analysis kaiser windows, By matlab code, Own five modulation signal, A noise auxiliary data analysis method.)

本程序设计的是咬尾编码的turbo码，用matlab编写。咬尾turbo码也即不需要拖尾比特，使得前后两个状态相同，译码采用修正的MAP译码算法。此文件为咬尾编码矩阵生成的测试文件包(This program is designed to encode the turbo tail biting code, written with matlab. Tail biting turbo code that is not trailing bits to make the same before and after the two states, the MAP decoding using modified decoding algorithm. This file is biting the end of the generated test code matrix package)

1. 按照式计算相似性矩阵 2. 排除自身的相似度 3. 按照式计算归一化矩阵 4. 按照式计算归一化拉普拉斯图矩阵L 5. 计算L的特征向量，将前个特征值最大的向量按列放置成一个矩阵，即依次为前个特征值最大的特征向量 6. 归一化X形成矩阵Y 7. 对矩阵Y按每行为一个数据点，进行k-means聚类，第行所属的类就是原来所属的类。(1. similarity matrix based on formula computation 2. rule out your own similarity. 3. normalized matrix based on formula computation 4. normalized formula Laplasse matrix L according to formula. 5. Calculate the eigenvectors of L. Place the vectors with the largest eigenvalues in columns into a matrix, that is, the eigenvectors with the largest eigenvalues in turn. 6. normalized X formation matrix Y 7. K-means clustering is applied to matrix Y according to one data point per behavior. The first row belongs to the original class.)

利用matlab 生成二相编码信号，在一个码元内频率相同，不同码元内的信号频率不相同(generation for binary phase encoded signal)

一种智能优化算法-带交叉因子的粒子群优化算法(With cross factor particle swarm)

Hey QPSK Simulation which showed the BER performance