chengxu

C/A码产生的方法二Matlab程序代码(The Matlab procedure code of the generated C/A Well)

灰度拉伸的小仿真，用了多种尝试，希望对大家有帮助(simulation of Gray stretch, i hope it is usefull to you.)

this code give an implementation of kalman filter in matlab. the complete set of matlab tools useful for implementationof matlab are available with this file

利用计算机编程实现加性干扰信号的维纳滤波(Computer programming additive interference signal Wiener filter)

在matlab环境下，产生M序列及逆M序列，并画图进行比较(Matlab environment, to generate M sequences and inverse M sequence, and drawing comparison)

主要用途是对抗多径衰落。由于多径衰落的存在，使得同一个帧由于路径不同，到达用户端的时延有先有后。在相关的频域上的会造成子载波之间的相互干扰，影响 性能。另外，由于有了循环前缀，使得IFFT FFT操作把原来的线性卷积变成循环卷积，大大简化了相应的信号处理复杂度(The main purpose is to fight against multipath fading. Due to the presence of multipath fading, the first after they have the same frame different paths to reach the client delay. Would cause mutual interference between sub-carriers in the frequency domain, affecting performance. In addition, thanks to the cyclic prefix, so IFFT FFT operation to the linear convolution of the original into a circular convolution, greatly simplifying the corresponding signal processing complexity)

2x1 alamouti code for mimo channel

emd过程的详细演示 可以帮助刚刚接触hht的人了解 emd的过程(EMD detailed demonstration of the process can help just contact HHT people understand the process of EMD)

由matlab仿真的,超宽带信号中矩形波的产生(Rectangular wave generated)

说明：  利用lingo求解最小连接问题 !如果数据量大的话，还是用书上的算法简单实用，见 数学建模导论 68页 (Minimum connection problem solving using lingo! If large volume of data, then he used the book simple and practical algorithm, see page 68 Introduction to mathematical modeling )