lecture1

matlab课程讲义，关于matlab入门的介绍。(Course Training Manual, matlab, matlab getting started on the introduction.)

LGB码本选择，矢量编码之前的码本选择算法。随机初始码本(Code of the LGB choice, before the vector encoding the code book selection algorithm. Random initial codebook)

说明：  平面波展开法 2D Phononic Cystals eigvalue 正方格子(Plane wave expansion method 2D Phononic Cystals eigvalue)

说明：  FM的M文件,是基于MATALB环境下运行的(FM M document is based on enriching environment running)

本代码是《通信信号处理》课程的大作业相应的代码。主要是通信信号发射端的仿真，具体功能是：1. 产生任意长度的伪随机序列，将序列映射为I,Q两路的信号，2.均方根升余弦滤波器成型. 3.经过通带衰减为3dB的倾斜滤波器（模拟信道衰落效果）4.插零，半带滤波器升抽样。 5.NCO处理单元调制(This code is communication signal processing courses corresponding to the large code. Mainly is the simulation of the communication signal transmitter, the specific functions are: 1. Produce arbitrary length of the pseudo-random sequence, the sequence mapping for the I, Q two-way signal, 2. Raise the root-mean-square filter forming 3. After passband attenuation 3dB tilt filter (analog channel fading effect) 4. Insert zero, half-band filter l sampling. 5. NCO processing unit modulation)

It is used to find shortest path between the nodes

说明：  利用MATLAB编写的求解固体火箭发动机星型药柱窗口化代码(Using MATLAB to solve the solid rocket motor star grain windowing code)

石墨烯因其出色的电学、力学、热学、光学特性引起了全球研究热潮。作为超材料和变换光学平台，我们有必要计算它的电导率。(Because of Graphene s excellent electrical, mechanical, thermal and optical properties,it caused the global research boom. As the platform of metamaterials and transformation optics , we need to calculate its conductivity.)

使用MATLAB对通信中的一种调制技术QPSK进行编程实现，分析其误码率(The use of MATLAB for communication in a QPSK modulation technique to program implementation, analysis of its error rate)

the code shows the step response of a closed loop system the code shows the step response of a closed loop system the code shows the step response of a closed loop system