Fast-Fourier-base-4

image enhancememnt.........

说明：  二进制差分编码解码，二进制差分相移键控二进制幅移键控，二进制相移键控，二进制频移键控最小频移键控的调制与解调(Differential encoding and decoding binary, binary differential phase shift keying binary amplitude shift keying, BPSK, binary frequency shift keying Minimum Shift Keying modulation and demodulation)

PCA功能函数，使用时只需要编写主函数。(PCA function functions, only need to write the main function. )

图像分析与图像形态学，MATLAB数字信号与图像处理范例实战速查宝典十一章内容(Image analysis and image morphology)

微分方程模型代码，很多时候差分格式的重写(the function as is code)

关于线性调频信号的生成和匹配滤波的代码，可以运行，还易懂(matched filtering of MATLAB for random signal processing algorithm demo!)

this is the code to do spectrum analysis using FFT.

使用起来非常方便，LCMV优化设计阵列处理信号，主要是基于mtlab的程序，使用大量的有限元法求解偏微分方程，搭建OFDM通信系统的框架，部分实现了追踪测速迭代松弛算法，利用贝叶斯原理估计混合logit模型的参数。( Very convenient to use, LCMV optimization design array signal processing, Mainly based on the mtlab procedures, Using a large number of finite element method to solve partial differential equations, Build a framework OFDM communication system, Partially achieved tracking speed iterative relaxation algorithm, Bayesian parameter estimation principle mixed logit model.)

PCA降维实例，使用数据集，数据集衡量美国329个城市生活质量的9个指标：气候、住房、健康、犯罪率、交通、教育、艺术、娱乐和经济。对于各指标，越高表示越好，如高的犯罪指标表示低的犯罪率。(PCA dimensionality reduction example uses data sets and data sets to measure 9 indicators of quality of life in 329 cities: climate, housing, health, crime rate, transportation, education, art, entertainment and economy. For each index, the higher the better, as the high crime indicator indicates a low rate of crime.)

说明：  利用蚁群算法求解tsp（旅行商）问题，给出遍历方案，最后求出最短路径。(Ant colony algorithm for tsp (TSP) problem, given traversal solutions, and finally find the shortest path.)