dctwater

快速傅立叶变换的matlab算法实现。（是一个按照时间抽取的基-2快速傅里（基-2 FFT-DIT）。输入倒位序，输出自然顺序。(Fast Fourier Transform algorithm matlab. (Which is a time of extraction in accordance with the base-2 Fast Fu-ri (base-2 FFT-DIT). Enter the inversion sequence, the output of natural order.)

在带限信道信号传输的仿真。仿真4PAM调制信号在AWGN信道下的性能，画出误比特率和误符号率。 (In the band-limited signal transmission channel in the simulation. Simulation 4PAM modulated signal in AWGN channel performance.)

to encrypt and decrypt the data using buyer seller watermarkingtechnique

粗糙集进行评价时最后求信息熵，进而生成决策树

说明：  对学习最大似然法有好处，有利于论文的计算、修改(Examples of Inconsistency of Maximum Likelihood Estimates )

用有限元差分法求解一维电磁场的matlab程序，该程序给出了电磁场随时间的演化图(Finite difference method with the one-dimensional electromagnetic field of the matlab program, which gives the time evolution of the electromagnetic field map)

Matlab实现遗传算法解决TSP问题，计算智能课程设计，程序以Oliver问题是例子，结果良好，也可以自己自己要解决的问题，贡献给大家。(Matlab genetic algorithm to solve TSP problem, Computational Intelligence curriculum design, program the Oliver problem is an example, good results can also own their own to solve the problem, to the party.)

毕设可能会用到的很好用的mimo程序，很重要计算信道的(Completed the set may be used with MIMO program, it is important to calculate the channel)

LS（Least Square，最小二乘法）算法是信道估计算法中最基本的算法之一。在MIMO-OFDM系统中，经常选择LS算法或其改进算法对信道进行估计。利用LS算法设计信道估计器，算法结构简单易于实现，且估计器不需要知道信道中各个收发天线对之间的自相关矩阵和噪声。(LS (further Square, Least Square) algorithm is one of the most basic algorithm of channel estimation algorithm. In MIMO- OFDM systems, often choose LS algorithm and its improved algorithm for channel estimation. Use of channel estimator and the LS algorithm design algorithm structure simple and easy to implement, and the estimator does not need to know in the channel between the sending and receiving antenna for autocorrelation matrix and noise. )

认知无线电频谱感知中的单用户频谱感知的主要三种方法：能量检测，循环平稳特征检测，匹配滤波器检测 的matlab实现的源代码(cognitive radio spectrum sensing：Energy detection, cyclostationary feature detection, matched filter detection 。matlab the source code)