PPM-and-PAM

％ EM algorithm for k multidimensional Gaussian mixture estimation ％ ％ Inputs: ％ X(n,d) - input data, n=number of observations, d=dimension of variable ％ k - maximum number of Gaussian components allowed ％ ltol - percentage of the log likelihood difference between 2 iterations ([] for none) ％ maxiter - maximum number of iteration allowed ([] for none) ％ pflag - 1 for plotting GM for 1D or 2D cases only, 0 otherwise ([] for none) ％ Init - structure of initial W, M, V: Init.W, Init.M, Init.V ([] for none) ％ ％ Ouputs: ％ W(1,k) - estimated weights of GM ％ M(d,k) - estimated mean vectors of GM ％ V(d,d,k) - estimated covariance matrices of GM ％ L - log likelihood of estimates ％( EM algorithm for k multidimensional Gaussian mixture estimation Inputs: X (n, d)- input data, n = number of observations, d = dimension of variable k- maximum number of Gaussian components allowed ltol- percentage of the log likelihood difference between 2 iterations ([] for none) maxiter- maximum number of iteration allowed ([] for none) pflag- 1 for plotting GM for 1D or 2D cases only, 0 otherwise ([] for none) Init- structure of initial W, M, V: Init.W, Init.M, Init.V ([] for none) Ouputs: W (1, k)- estimated weights of GM M (d, k)- estimated mean vectors of GM V (d, d, k)- estimated covariance matrices of GM L- log likelihood of estimates)

盲信号分离中的自然梯度算法，效果比较好！是最基本的用来进行盲信号分离的算法(Blind signal separation in the natural gradient algorithm, results were quite good! Is used for the most basic algorithm for Blind Signal Separation)

说明：  协作通信的权威，美国南加州大学，维特比工程学院Prof.Gerhard Kramer的经典著作，系统的讲述协作通信的原理及应用(Authority collaboration communication, University of Southern California, Viterbi School of Engineering Prof.Gerhard Kramer' s classic, tells the system principle and application of collaborative communication)

说明：  单发单收的16PSK仿真，并统计系统的误码率(One received 16PSK single simulation and the BER statistics)

多种通信模式的仿真，由CONCORDIA UNIVERSITY的教授编制。(Simulation codes programmed by professor in Concordia University.)

Source code for gradient algorithm

Engineering anna university electronics department Engineering anna university electronics department

长期演进系统，通信链路自动重传情况解析。获取是否自动重传(Long-term evolution system, automatic retransmission of communication links)

合成孔径雷达成像算法之线性调频变标算法，并进行了精确的距离徙动校正，是SAR经典的频域成像算法之一(SAR imaging algorithm with Chirp Scaling Algorithm )

需将图形文件复制到D盘根目录，或修改程序中的相关文件的路径。 计算机运行可能会出现这样的警告：Warning: Function call WAVEDEC2 invokes inexact match F:Matlab oolboxwaveletwaveletwavedec2.m. > In Wnn0802 at 18 无妨，没关系的，不影响运算结果。(Need to copy files to the D graphics root directory, or modify the program in the path of the relevant documents. Computer running such a warning might appear: Warning: Function call WAVEDEC2 invokes inexact match F: Matlab toolbox wavelet wavelet wavedec2.m> In Wnn0802 at 18 anyway, it does not matter, does not affect the result of the operation.)