Esfera4_matlab

ASK调制模型，提倡共享。谢谢大家支持。(ASK modulation model, promoting sharing. Thank you for support. Thank you, Thank you, thank)

programme in matlab filetres for digital signal processing..

输电线路的始端电压和功率的求解，其滞后功率因素为0.8，根据其参数来求解响应的电压和频率(The shifting transmission line voltage and power, the power factor behind for 0.8, according to its parameters to solve the voltage and frequency response)

主元分析（PCA）的Matlab源代码分析(source code of PCA runed on Matlab)

matlab中信噪比计算程序，可以检验使用matlab内置函数添加的噪声是否正确(Can be tested using matlab citic noise ratio calculation, matlab built-in functions to add noise is correct )

8载gsm ddc实例 matlab实例 (8gsm ddc)

说明：  基于灰度直方图，对图像的纹理特征进行提取，根据灰度共生矩阵得到的四个纹理描述子。(Histogram based on image texture features were extracted, according to the four GLCM texture descriptors obtained.)

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.

说明：  用MATLAB编写的，用人口迁移算法求函数的最大值。可运行。(Prepared using MATLAB, with population migration algorithm for the maximum value function. Can run.)

matlab代码，和相关pdf文档，很经典(matlab code, and related pdf documents, it is a classic)