ALOHA-protocol-simulation

This function calculates discrate fourier transform for vector using the "Fast" method . (recursion )

my matlab program this for viterbi

输入信号五个基于瞬时信息的特征：零中心归一化瞬时幅度功率谱密度的最大值,零中心归一化瞬时幅度绝对值的标准偏差，零中心非弱信号段瞬时相位非线性分量绝对值标准偏差，零中心非弱信号段瞬时相位非线性分量标准偏差，零中心归一化的非弱信号段瞬时频率绝对值的标准偏差，得到识别出的信号类别，本例为2PSK, 4PSK, GMSK, OQPSK, pi/4DQSK中的一个，还可以看Art网络的扩展性。(input signal instantaneous information on five characteristics : In the center is one of the instantaneous rate of the power spectral density of the maximum, is a center to the absolute value of the instantaneous rate of the standard deviation, Non-zero weak signal instantaneous phase of the nonlinear component absolute standard deviation, Non-zero weak signal instantaneous phase of the nonlinear component standard deviation, In the center is one of the non-weak signal of the absolute value of the instantaneous frequency standard deviation, the identification of signal type, The cases of two PSK, 4PSK, GMSK, OQPSK, pi/4DQSK of one, Art can be viewed network scalability.)

数据集近似熵值的计算，matlab程序代码，简单方便(Data set approximate entropy calculation matlab program code, simple and convenient)

OFDM入门介绍非常好的材料,适合刚做通信工程的研究人员,高手就不用看了.(Introduce a very good entry-OFDM materials, just to do communications work for researchers, experts do not need to read.)

一个很好的实例，很有用的哦，大家来看看啊。(A good example, very useful, oh, we sight for visitors.)

经典泊松方程的matlab数数值求解程序代码。可直接使用。 (Matlab the number of values ​ ​ of the classical Poisson equation solver code. Can be used directly.)

MPPT is an electronic system that searches the MPP of a PV panel. It should be noted from start that MPPT does not use the same principle as mechanical tracking, where the panel is moved (rotated) in position (azimuth and elevation) so as maximum sunlight is incident on it. MPPT controllers (trackers) change the output impedance of the PV panels, thus changing its operating point. However, MPPT can be used in conjunction with mechanical sun tracking systems to improve power generation. Typical MPPT controllers make use of a power converter to track MPP of the PV system. Power

说明：  全波频率相速度分析，可以分析软硬地层，不同层数的底层(Full-wave frequency phase velocity analysis, to analyze hard and soft strata, different layers of the underlying)

matlab优化工具箱,包括线性规划linprog.m，二次规划quadprog.m等(optim toolbox)