bfunction

OFDM下行的仿真1、产生要传输随机数； 2、进行调制； 3、串并转换； 4、进行IFFT操作（代码中有用到共轭对称向量的IFFT为实数进行简化计算）； 5、增加循环前缀； 6、并串转换； 7、输出前滤波； 8、增加信道噪声（加性高斯白噪声）； 9、接收端串并转换； 10、去除循环前缀； 11、进行FFT变换； 12、信号解调； 13、误比特率计算； (OFDM downlink simulation 1, have to be transmitted random number 2, the modulation 3 series and transforms 4, the IFFT operation (code useful to conjugate symmetric vector of the IFFT of real numbers to simplify calculations) 5, the increase in circulating prefix 6, and string conversion 7, the output before the filter 8, increased channel noise (additive white Gaussian noise) 9, the receiver string and conversion 10, removal of cyclic prefix 11, the FFT transform 12 , the signal demodulation 13, bit error rate )

calculate the theoretical exact(in AWGN) SYMBOL ERROR RATE(Ps_SER) verses Eb/No for even numbers of bits per symbol in qam modulation

code Matlab this is frome my data base

说明：  计算mie散射相关参数，根据颗粒粒径 ，入射光波长 ，颗粒折射率，介质折射率，计算不同角度下散射光强，不同粒径下的消光系数。(Calculate the mie scattering related parameters, calculate the scattered light intensity at different angles and the extinction coefficient at different particle sizes according to particle size, incident light wavelength, particle refractive index, and medium refractive index.)

该工具箱的目的是要帮助人们理解计算机视觉方法引用另一种为在 matlab 的源代码。 因此，一些方法被 re-implemented，即使当其源代码不可用时，matlab 最初，具有方法。 例如 re-implemented kmeans 算法。(The aim of this toolbox is to present source codes in matlab as another kind of references for helping people to understand computer vision methods. Thus, some methods were re-implemented, even if matlab has the methods originally, when their source codes are not available. For example, kmeans algorithm was re-implemented. Howerver, notice that the built-in functions are faster than functions created in this toolbox because the built-in functions are mostly written in C. )

matlab code to perform TLI

本程序利用Matlab软件仿真了QPSK+瑞利信道及高斯信道，对比分析结果。(This procedure used Matlab software simulation QPSK+ the Rayleigh channel and the Gauss channel, the contrastive analysis result.)

本书把MATLAB 当作一种技术编程语言来教，向学生展示如何编写简洁高效，有充分根据的程序。(The book as a technique to MATLAB programming language to teach, to show students how to write a simple and efficient, there is a sufficient basis for the program.)

说明：  GUI界面AStar算法和蚁群算法功能实现，蚁群算法较慢，请耐心等待(GUI interface astar algorithm and ant colony algorithm function implementation, ant colony algorithm is slow, please wait patiently)

使用matlab实现的矢量量化的LBG算法，内有文档说明(Matlab achieved using the LBG vector quantization algorithm, there are documented)