Hrz_Dist_with_x1_x2

主要根据回声路径的改变来判断是否发生了双端通话，对研究算法的同学具有一定的参考价值。(A double-ended conversation about the detection of foreign literature, mainly based on changes in the echo path to determine whether there has been double-ended conversation, students study algorithm has a certain reference value.)

The matlab code describes different schemes to store the sparse matrix of a given power system network.

this code about optimization

维纳噪声抑制；实验分析；实验结果及分析；利用信号之间的相关性进行信号估计，从而将噪声滤除(Wiener noise suppression Experimental analysis The experimental results and analysis Using the signal signal to estimate the association between, to filter out noise )

MODULATOR MIMO IS VERY GOOD REFERENCE

用于船舶控制系统误差分析与设计的计算程序(Ship control system for error analysis and design of the computer program)

本程序的基本功能是对信号进行傅里叶变换，并同时提取出他的时域和频域的特征值。(The basic function of this program is the signal to Fourier transform, and the simultaneous extraction of his time domain and frequency domain characteristic values.)

该文件给出了单载波频域均衡中MMSE均衡方法的MATLAB实现，其中包含调制解调，交织，解交织以及编译码，包含了整个通信系统的各部分，希望对大家有帮助。(The document gives the MATLAB single-carrier frequency domain equalization MMSE equalization method, which contains modulation and demodulation, interleaving, de-interleaving and encoding and decoding, including the various parts of the whole communication system, we want to help.)

LBM使用D2Q9模型，模拟流体在多孔介质中的渗流(LBM to use D2Q9 model, simulation of fluid in porous media flow.)

A polyalphabetic cipher is any cipher based on substitution, using multiple substitution alphabets. The Vigenère cipher is probably the best-known example of a polyalphabetic cipher, though it is a simplified special case.Polyalphabetic substitution ciphers are useful because the are less easily broken by frequency analysis, however if an attacker knows for instance that the message has a period n, then he simply can individually frequency analyze each cipher alphabet. The number of letters encrypted before a polyalphabetic substitution cipher returns to its first cipher alphabet is called its period. The larger the period, the stronger the cipher. Of course, this method of encryption is certainly not secure by any definition and should not be applied to any real-life scenarios.