homework_4

用matlab实现的固体模型，绕地球飞行的活动物体。(Using matlab realize solid model, the activities around the world flying objects.)

Function to plot bar graphics in matlab

混沌动力学初步对于刚开始接触混沌的人来说是个很好的书，希望对大家有用(Chaotic dynamics chaotic initial contact with the person who started it is a very good book, we want to be useful)

用matlab实现非相干信号music算法的DOA估计(Using matlab to achieve non-coherent signal music algorithm for DOA estimation)

There are three kinds of switching mode DC-DC converters, buck, boost and buck-boost. The buck mode is used to reduce output voltage, whilst the boost mode can increase the output voltage. In the buck-boost mode, the output voltage can be maintained either higher or lower than the source but in the opposite polarity.

利用MATLAB求微分解方程，程序简单实用，可以让大家轻松掌握(Find micro-decomposition equation using MATLAB, the program is simple and practical, so that everyone can easily grasp)

matlab聚类和手写数字分析软件，里面有说明怎么安装以及应用(matlab clustering and handwritten numerical analysis software)

A MIMO multiplexing system with NT transmit and NR = NT receive antennas is designed. The main challenge for MIMO systems lies in the non-orthogonality of the transmission channel. This can be solved by turbo processing. Turbo channel encoder is used for converting the bits in its suitable form. Then different M-ary QAM is compared.

关于OFDMA系统的资源分配的程序，相信去初学者能有一定的帮助(OFDMA system for resource allocation procedures, I believe that to be able to have some help for beginners)

SPWM电压型逆变器的数学模型，可以直接产生波形(SPWM inverter mathematical model that can directly generate waveforms)