Assignment1a

利用预测的方法实现图像的压缩，可以应用于光谱图像谱间去相关(The use of projected images of the compression method can be applied to spectral-spectral images to the relevant)

说明：  matlab gm（1，n）程序 希望对灰色系统研究者有所帮助(matlab gm (1, n) process researchers hope to help the gray system)

复杂网络中典型网络的matlab仿真（包括小世界网络，BA网络，随即图等等）(matlab simulations in complex networks)

说明：  利用Matlab编写求取4级移位寄存器的M序列 设初始序列为:1 1 1 1 通过一个四级的移位寄存器,其中在第三级有负反馈(一个模二加法),即将序列的第三位和第四位相加(如序列1 1 1 1经移位寄存器第一次移位后为0 1 1 1)的值再赋到第一位. 序列的周期为16.(The use of Matlab to prepare to strike four of the M shift register sequence based initial sequence as follows: 1 1 1 1 4 through a shift register, which in the third grade there is negative feedback (one-mode two adder), the upcoming series third and fourth combined (such as the sequence 1 1 1 1 by the shift register after the first shift for the 0 1 1 1) the value given to the first again. The cycle sequence was 16.)

基本调制识别。识别2ask，2fsk，2psk，4ask，4fsk，4psk。(The basic modulation recognition. Identification 2ask, 2fsk, 2psk, 4ask, 4fsk, 4psk.)

关于matlab基础操作、矩阵运算、程序设计、绘图等的学习资料(Learning materials of the underlying operating on matlab, matrix operations, program design, graphics, etc.)

通过MATLAB平台对通信仿真，研究讨论Turbo码的编译码结构，四种Turbo码译码算法，讨论Turbo码中几种常见的交织器，利用MATLAB软件平台进行并行级联Turbo卷积码的性能仿真，仿真评估了不同设计参数对Turbo码性能的影响。(Through MATLAB simulation platform for communications, research and discussion Turbo code decoding structure, four kinds of Turbo code decoding algorithm, discuss several common Turbo code interleaver, using MATLAB software platform for parallel concatenated convolutional codes Turbo Performance Simulation , simulation and evaluation of different design parameters on Turbo code performance.)

60个常用的matlab的小程序，文件命名采用函数名命名，使用者请根据需要自行选择(60 a small matlab program used, the file name using the function named，the user according to their needs)

fdtdq.m 球面坐标系的fdtd实现程序 fdtdgpu.m 使用gpu并行的fdtd实现程序(The FDTD realization program of fdtdq.m spherical coordinate system Fdtdgpu.m uses a GPU Parallel FDTD implementation program)

用MATLAB实现了该算法，并对所实现方法进行了验证，在步骤（3）中则给出了求出滤波器类型及参数的方案，并进行验证，在步骤（4）中通过MATLAB的AWGN函数等相关知识实现了AWGN信道的仿真。 本文首先介绍数字水印和音频水印的相关概念和发展概况，接着介绍了完成仿真工作所需的基础知识，之后提出DA/AD变换的仿真实现，(Using MATLAB realization of the algorithm, and the realization method of authentication, in step (3) in the given filter type and parameters to derive the program and verify, in step (4) through MATLAB-AWGN function and other relevant knowledge to achieve the AWGN channel simulation. This paper first introduces the digital watermarking and audio watermarking-related concepts and developments, and then introduced a complete simulation of the basic knowledge required, after the DA/AD conversion of the simulation,)