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matlab的电子教案，希望对学习数学建模的人有所帮助，尤其是学习matlab(matlab electronic lesson plans, I hope to learn mathematical modeling help people, especially the learning matlab)

采用MATLAB语言编译的求解线性方程组的迭代法(iterative method of solving linear equations)

matlab频谱分析 很有用(matlab spectrum analysis is useful)

这是我做的第一个程序，希望大家支持下，谢谢，thank you(this is mine doing)

说明：  图象多尺度分析，可与多分辨方法进行比较。并可输出结果。(image multiscale analysis, and multi-resolution methods. May output.)

说明：  认知无线电技术的提出是为提高频谱利用率，而认知无线实现的关键技术是频谱感知，众所周知协作检测提高了衰落环境中认知用户系统检测的性能，该文章是基于协作检测提出新的检测方案，利用了双门限方法提高了系统性能，兼顾带宽有限和增强性能两个方面，是基于门限检测的协作检测性能优化的前提。对以后门限优化协作检测非常有用。(In this paper, we employ a double threshold method in energy detector to perform spectrum sensing, while a fusion center in the cognitive radio network collects the local decisions and observational values of the secondary users, and then makes the final decision to determine whether the primary user is absence or not. Simulation results will show that the spectrum sensing performance channels is improved significantly under the proposed scheme as opposed to the conventional method.)

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)

用matalab编制的绘制海流矢量图的程序，压缩包内有几个示例数据(Vector drawing program with currents matalab prepared, there are several examples in the package data compression)

说明：  基于物理光学透镜成像原理，利用MATLAB语言编写了仿真程序，制作了GUI界面。(Based on the imaging principle of physical optical lens, the simulation program is written in MATLAB language, and the GUI interface is made.)

遗传算法优化PID，解决传统的PID参数采用试凑的方式的问题，从而进行自整定参数( Genetic Algorithm PID，Solve using traditional PID parameters of trial and error approach problems in order to be self-tuning parameters)