jiaozuoye333333

一个50行的Matlab有限元程序（二维非线性问题），执行fem2d_nonlinear.m即可。(A 50-line Matlab finite element program (two-dimensional nonlinear problems), the Executive fem2d_nonlinear.m can.)

　OFDM —— OFDM(Orthogonal Frequency Division Multiplexing)即正交频分复用技术，实际上OFDM是MCM Multi-CarrierModulation，多载波调制的一种。其主要思想是：将信道分成若干正交子信道，将高速数据信号转换成并行的低速子数据流，调制到在每个子信道上进行传输。此程序为ofdm仿真程序！(OFDM- OFDM (Orthogonal Frequency Division Multiplexing) that is orthogonal frequency division multiplexing, OFDM is the fact MCM Multi-CarrierModulation, a multi-carrier modulation. The main idea is: The channel is divided into a number of orthogonal sub-channel, high-speed data signals into parallel low-speed sub-data stream, modulated to be transmitted in each sub-channel. This program is ofdm simulation program!)

bandpass filters

此程序包含心音信号的低通滤波、小波去噪、EMD分解、希尔伯特黄变换以及心音阈值定位一系列算法。输入为采集到的单通道心音信号。入口程序为main.m (A program that process heart sound signals to separete each heart sound clearly.Functions like Low-pass filters and Hilbert transformers are involed.)

说明：  Solves steam reformer problem in matlab

重心法和模糊层次分析法的配送中心选址方法的结合(Center of gravity method and the combination of fuzzy AHP method of distribution center location)

大学物理实验中电子电荷测量的源代码，在excel表格中输入平衡电压以及运动时间，运行后可以直接生成实验结果。(Measurement of the electron charge in college physics experiment source code in excel form input balance voltage, and exercise time, experimental results can be generated directly in the running.)

k-svd算法在表情识别方面的实现和实例应用，附有图片和文章。(k-svd algorithm for face recognition on the implementation and application examples, with pictures and articles.)

本书详细介绍了最新电力电子技术在PWM变换器中的应用，内容涉及新能源发电等内容(This book is about the new technology about power electronics in PWM recfiter)

说明：  根据经典的协作通信原理,对其中的一种DF传输方式进行了matlab仿真(According to classic principles of collaborative communication on one of DF transmission methods matlab simulation)