lab2

how to construct the parity check matrix for LDPC codes

A matlab program that illustrates the occurance of aliasing in a digital signal. if the sampling frequency is not sufficient then aliasing occurs.

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Proteins _ String Kernel

说明：  求信号处理中的峰值信噪比，学通信与仪器的都可用(peak signal noise ratio)

用MATLAB实现欧式距离，很简单的例子，一学就会。其中，还求出了距离的最小值。希望大家可以相互学习一下。(Very simple example, a study will Euclidean distance, using MATLAB. Wherein the minimum distance is obtained. I hope we can learn from each other.)

为了对数据进行准确的预测，建立了双隐层BP神经网络，并提供了源数据，实现了准确的数据预测。程序能够执行，误差较小，输出接近真实值。(To accurately forecast the data, we build the two-hidden layer BP neural network and provide the original data, which will forecast the data. The program can be executed with small error which will be close to the real data.)

电力系统潮流计算软件，最新版，可进行普通潮流、最优潮流计算、无功优化等。(optimization toolbox using a grid for optimal power flow and reactive power optimization)

说明：  Dijkstra算法找最短路径代码，包括43个案例分析(Dijkstra algorithm to find the shortest path code, including 43 case studies)

Simulation of Gray coded MQAM in Rayleigh fading