771

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.)

用matlab编写的拉普拉斯高斯算子代码（LoG算子），用该函数实现LoG算子提取图像边缘点的功能。(Written by matlab Laplacian of Gaussian operator code (LoG operator), using the LoG operator functions for extracting the image edge points of the function.)

阵列信号处理的波达角方向估计，用于八单元线阵，对多个接受信号的来波方向进行估计(Array signal processing direction of arrival angle estimation, for the eight-cell linear array, to receive signals on a number of DOA estimation)

说明：  递归算法的全排列递归算法的全排列递归算法的全排列递归算法的全排列(Full array return delivery method )

光散射法测量颗粒粒径分布的时候MIE散射系数的确定，采用matlab算法反演(Mie coefficients)

用MATLAB编写实现图像几何校正的程序。采用控制栅格的方法。(Prepared using MATLAB for Image geometry correction procedures. Using the control grid method.)

说明：  matlab有限长序列的DTFT分析，详细说明了matlab的基本功能(DTFT matlab finite length sequence analysis, detailed description of the basic functions of matlab)

说明：  Matlab的系统经典辨识，包括二阶和三阶(Matlab system identification classical)

matlab examples of neural network

同轴馈电的微带贴片天线的各项辐射特性（内含网格生成器）(Coaxial fed microstrip patch antenna radiation characteristics)