weifenfangcheng

本工具箱主要为学习数学建模和参加中国大学生数学建模竞赛的同学而制作。汇集了 数学建模常用的最优化、微分方程、数据拟合、统计等方面的计算工具，包括我们自 编的补充工具。工具箱还汇集了96-99中国大学生数学建模竞赛题解MATLAB程序。本 工具箱也可供使用MATLAB作数值计算的学生、教师和科技人员参考。(This toolkit is mainly mathematical modeling study and participated in the China Mathematical Contest in Modeling the production students. A collection of commonly used mathematical modeling optimization, differential equations, data fitting, statistics and other aspects of computational tools, including our self complementary tool. The toolbox also brings together 96-99 China Mathematical Contest in Modeling problem solution MATLAB. The toolkit is also available using MATLAB for numerical calculation of the students, teachers and technology officers.)

关于ofdm的matlab仿真，包括绝大部分基于802.11a标准的程序。(about matlab simulate of ofdm system,including the most program base on 802.11a standar.)

说明：  在MATLAB中表示信号的常规格式是向量或者矩阵。本示例中利用randint 函数来产生一个表示二进制数据序列连续值的列向量。其中二进制数据序列的长度（即为列向量中的行数）设置为30,000。 下面的代码同时还绘制了数据序列的杆图（stem plot），用来显示数据的0、1值。你所产生的图可能与次示例中的图有一点不一样，这是因为本示例中应用了随机数。 (Said signal in MATLAB conventional format is a vector or matrix. In this example use randint function to generate a column vector of a sequence of binary data, said successive values. Wherein the length of the binary data sequence (i.e., the number of rows in the column vector) is set to 30,000. The following code sequence of data is also plotted in Fig rod (stem plot), the value 0 is used to display the data. You may have generated the second example of FIG FIG little different, this is because the present example, the application of the random number.)

MATLAB求音频短时能量，可以快速用matlab获取音频短时能量(MATLAB and audio short-term energy, you can quickly matlab audio short-term energy)

说明：  未编码传输AWGN信道测试 每帧的输入是相同的，（不是每帧都不一样，这样可以大幅降低计算量） 在帧比特足够多的情况下，应该可以保证随机性(AWGN channel is not coded transmission test input of each frame is the same, (not every frame is different, this can significantly reduce the computation) are enough bits in the frame of the case, should be able to guarantee randomness)

matlab的GUI实现一个加法器，同时使用mcc编译成了exe的可执行文件，非常适合初学者(matlab GUI implementation is an adder while using mcc compiled into exe executable file, very suitable for beginners)

根据潜在震源区数据，利用matlab画第五代潜在震源区图，并在鼠标点击位置编号(According to the potential source area data, using matlab draw fifth-generation potential source area map and click on the mouse position number)

MIMO块对角化预编码仿真图形，这里是4发4收时的仿真图形。(Block diagonalization precoding MIMO simulation graphics, 4 fat, 4 received here when the simulation graphics.)

模糊层次会关联分析法，很好的评价方法主客观结合复制(The fuzzy hierarchy will relational analysis, a good evaluation methods)

依据两个点的经纬度计算这两点在地球上距离的函数文件，误差很小(Calculated based on latitude and longitude of two points on Earth from these two points in the function file, the error is small)