30个案例分析的代码第30章

讲述climentine的基本功能与使用方法(mainly about functions and how to use clemintine.)

生成数字调制类型信号的matlab程序，包括BPSK，QPSK，2FSK,4FSK,QAM等多种类型信号的调制方法(matlab program for digital modelated signal genaration,including BPSK，QPSK，2FSK,4FSK,QAM,etc.)

说明：  使用MATLAB进行的SIMULINK仿真，实现了磁悬浮PID控制(SIMULINK simulation with MATLAB realizes the PID control of magnetic levitation)

说明：  随着现代社会的发展，信息的形式和数量正在迅猛增长。其中很大一部分是图像，图像可以把事物生动地呈现在我们面前，让我们更直观地接受信息。同时，计算机已经作为一种人们普遍使用的工具为人们的生产生活服务。从图像中提取文字属于信息智能化处理的前沿课题，是当前人工智能与模式识别领域中的研究热点。由于文字具有高级语义特征，对图片内容的理解、索引、检索具有重要作用，因此，研究图片文字提取具有重要的实际意义。又由于静态图像文字提取是动态图像文字提取的基础，故着重介绍了静态图像文字提取技术。(With the development of modern society, the form and quantity of information are growing rapidly. Which is a large part of the image, the image can be vividly presented in front of us, let us more intuitive to accept the information. At the same time, the computer has served as a popular tool for people's production and life services. Extracting the text from the image belongs to the forefront of information intelligent processing, which is the research hotspot in the field of artificial intelligence and pattern recognition. Because the text has high semantic features, it has important effect on the understanding, index and retrieval of picture content. Therefore, it is of great practical significance to study the extraction of picture text. And because the static image text extraction is the basis of dynamic image extraction, it emphasizes the static image text extraction technology.)

两路语音信号混合及解混的基于负熵的fastICA算法的MATLAB仿真实例(Two-way voice signals mixed and mixed solutions of negative entropy-based algorithm fastICA simulation of MATLAB)

ideal channel selection/noise estimation

jakes channel model

linspace(0, 2*pi) 產生從  0  到 2π且長度為 100 (預設值)的向量 x  y 是對應的 y 座標 只給定一個向量 該向量則對其索引值(Index)作圖 plot(y)和plot(1:length(y), y)會得到相同的結果 

利用SOM神经网络设计矢量量化的码书，结果优于传统的LBG方法，失真度较小。(SOM neural network design use vector quantization codebook, the result is better than traditional methods LBG, distortion is small.)

设计一个按照时间抽取的基2快速傅里叶变换（基2FFT-DIT）。输入倒位序，输出自然顺序。(To design a time of extraction according to the base 2 Fast Fourier Transform (base 2FFT-DIT). Input inversion sequence, the output natural order.)