chepaiNETWORK12

本程序是关于常微分方程初值问题数值解的欧拉算法及线性多步法的matlab代码，对初学者有帮助，例题用的李荣华的微分方程数值解法第一章的习题(This program is about Euler algorithm for numerical initial value problem of ordinary differential equations and linear multistep method matlab code, useful for beginners, examples of Li Ronghua s numerical solution of differential equations of the first chapter exercises )

selected matlab codes for numerical analysis numerical differentiation and root finding. Euler anf Ronge Kotta

退火粒子群优化算法（SAPSO），matlab代码，仅供学习(Annealing particle swarm optimization (SAPSO), matlab code, only to learn)

LSSVM经常用来处理数据的很好用的，希望大家能喜欢(lssvm is used for data processing)

应用于地震勘探来提高信号的分辨率。包含各种处理方法(Used in seismic exploration to improve the signal resolution. Includes a variety of treatment methods)

这个程序再matlab2012b版本上调试成功，以前在毕业设计的时候在网上找到的资料，希望对大家有用，基于线性预测系数(LPC)的语音信号重构。给出了完整的LPC matlab程序，包括语音信号采集，LP预测系数，阶数的选择以及预测结果误差曲线。（很好用）(This version of the program and then on the successful commissioning matlab2012b information previously graduation when found online, we want to be useful, based on linear prediction coefficient (LPC) voice signal reconstruction. Given a complete LPC matlab procedures, including voice signal acquisition, LP prediction coefficients, select the order and the prediction error curve. (Well used))

关于空间谱估计算法的一些性能比较，大家可以参考一下，看一看(On the spatial spectrum estimation performance comparison of the coding )

利用MATLAB 仿真工具设计出一个QPSK仿真程序，以衡量QPSK在理想信道、高斯白噪声信道和先通过瑞利衰落信道再通过高斯信道三种方式的调制解调得到的功率谱密度、噪声曲线、星座图及误码性能,并对仿真结果进行了分析。(QPSK simulation design and Realization Based on MATLAB)

将角度和幅度的二维数组画成dB值的polar图( POLARDB Polar coordinate plot. POLARDB(THETA, RHO) makes a plot using polar coordinates of the angle THETA, in radians, versus the radius RHO in dB. The maximum value of RHO should not exceed 1. It should not be normalized, however (i.e. its max. value may be less than 1). POLAR(THETA,RHO,S) uses the linestyle specified in string S. See PLOT for a description of legal linestyles. )

QPSK调制下在AWGN和Rayleigh衰落信道下的仿真以及误码率计算，包含完整的报告说明(QPSK modulation in AWGN and Rayleigh fading channel simulation, as well as bit error rate calculation, the report contains a complete description)