matlab-and-sql

一个横好的谱估计算法，AM ma 和arma模型，可以自动的选取。(A good cross-spectral estimation algorithm, AM ma and arma model selection automatically.)

自己写的一个程序，利用matlab的interp3实现三维数据插值(it s a program using matlab to achieve a three-dimensional data interpolation of interp3)

Matlab教程第7章，编程与数据分析、整理(Matlab Guide Chapter 7, programming and data analysis, sorting)

DRAM算法，是一种改进型的蒙特卡罗马尔科夫链（MCMC）采样方法，该算法基于经典的MCMC算法，在此基础上增加了改进策略，是算法能够更快速稳定的收敛。(DRAM algorithm is an improved Mirkov chain (MCMC) sampling method, the algorithm is based on the classic MCMC algorithm, based on the increase in the improvement of this strategy is the algorithm to more rapid and stable convergence.)

大地测量中的坐标求解转换，用于坐标反算，matlab代码(The geodetic coordinates solving conversion for coordinates Backcalculation, matlab code)

采用最小二乘逼近作为拟合实验数据的方法,利用F检验,确定实验数据拟合优度及最佳阶数,用编制的程序来拟合实验数据,得到了较好的结果(Least-squares fitting)

机器人控制仿真程序，机器人控制与MATLAB仿真源码(robotcontrol )

瑞利衰落仿真瑞利衰落仿真瑞利衰落仿真瑞利衰落仿真(Rayleigh fading Rayleigh fading simulation simulation Simulation of Rayleigh fading Rayleigh fading simulation)

一般离散信道的迭代算法。信道能无错误传送的最大信息率。对于只有一个信源和一个信宿的单用户信道，它是一个数，单位是比特每秒或比特每符号。(Iterative algorithms are generally discrete channel. Channel can be transmitted without errors maximum information rate. For only one source and a sink of the single-user channel, it is a number, in units of bits per second or bit per symbol.)

这里面有两个程序，两个都是采用4QAM调制。不过个人觉得第一个更容易懂，因为写的很有条理。我改的那个程序就是根据这个来的。 不过在这里面有个问题就是信道系数只能是由高到低，大家可以试试，改成[0.227 0.46 0.688 0.46 0.227]这个是老师给我的仿真中常用的信道系数，这个成为归一化信道，就是系数平方和为1. 第二个程序没有涉及到信道系数，但是这个程序当中，在128个子载波中，前后有32个空载波，这个在OFDM中也是经常用的，这样可以降低误码率。 (And there are two programs, two are based on 4QAM modulation. But personally feel that the first is easier, because the writing is organized. I changed that procedure is based on the past. However, there is a problem in that there is only channel coefficients from high to low, we can try and change into [0.227 0.46 0.688 0.46 0.227] This is the teacher gave me the simulation channel coefficient commonly used, this became normalized channel, is coefficient of the square and is 1. The second program is not related to channel coefficients, but this program which, in the 128 sub-carriers, the before and after the 32 air carriers, the in OFDM is also often used, which can reduce the error rate.)