plltest

国外高校老师编写的语音信号特征提取程序，非常实用初学者研究( [E, V, A, P] = analysis(x, N, U, M) extracts vocoder parameters E, V, A, and P from the speech signal x on a frame by frame basis. N is the analysis frame length, U is the update length, and M is the order of the linear prediction analysis. The return arguments are the extracted parameters, where E, V, and P are vectors with "n_frames" (the number of analysis frames, see code below) elements, A is a (n_frames, M+1) size matrix (includes the leading 1 of the polynomial).)

完整的ofdm，lmmse 算法 zf算法各种调制(ofdm simulink )

里面有详细的反步法仿真的例子，共有9个实例。非常适合初学者使用。(There are detailed examples of backstepping simulation, a total of 9 examples. It is very suitable for beginners.)

复杂网络中，在BA网络中最经典的路由算法matlab源程序并，是学习复杂网络最基本的路由算法。(Complex network, in the BA network, the most classical routing algorithm matlab source code and is the most basic learning complex network routing algorithm.)

用于信号处理的emd改进算法,供大家讨论学习(EMD for the signal processing algorithm study for discussion)

文件内含有在MATLAB基础上实现的PSO代码，测试过，能顺利运行，并且可以继续添加测试函数进行编译。(File contains MATLAB basis in the realization of PSO code, test, can run smoothly, and can continue to add the test function to be compiled.)

该matlab代码主要用于计算图像的边缘强度，信息熵，灰度均值，标准差(均方差MSE)，均方根误差，峰值信噪比（psnr），空间频率(sf)，图像清晰度，互信息(mi)，结构相似性(ssim)，交叉熵(cross entropy)，相对标准差。( calculate the uation average gradient, edge strength, information entropy, gray are Value, standard deviation (mean square error MSE), root mean square error, peak signal to noise ratio (psnr), spatial frequency (sf), image clarity, mutual information (mi), structure Similarity (ssim), cross-entropy (cross entropy), the relative standard deviation.)

The timing_recovery_1.mdl uses Simulinks variable step solver to create a continous time QPSK signal with both carrier and symbol rate errors. This is a relativly straight forward approach, but is computationally expensive. The sescond model, timing_recovery_2Q.mdl uses a purely discrete time approach using the same fractional sample delay approach as does the receiver. This can run much faster.

说明：  图挖掘，图聚类 m文件主要包含4个功能：图的生成，图相似度分析，节点符号化，边权挖掘 ，详细说明见注释(graph mining, graph clustering)

Simulink all digital pll with fixed point