shuxuejianmo__matlab

关于遗传算法的源码，用MATLAB实现的，对初学者非常有用。(The source of genetic algorithm, using MATLAB to achieve, is very useful for beginners.)

Iir高通、低通、低通滤波器，能实现对语音信号的浮点滤波(Iir high pass, low pass, low pass filter, to achieve the floating point filtering of speech signals)

Matlab小波能量谱的程序wavelet energy spectrum (wavelet energy spectrum )

一本不错的关于MATLAB最优化计算方面的书～(A good book on MATLAB optimization calculations to)

说明：  传感器阵列波束优化设计与应用书籍的第五章natlab程序(Chapter 5 matlab program of book Sensor array beam optimization design and application)

说明：  两种不同的假设： H1 ： 0 xn A fn wn ( ) cos(2 ) ( ) = ++ π θ n=1,2,…,N，f0 为规一化频率 H0 ： xn wn () () = n=1,2,…,N 其中 w[n]是均值为 0，方差为 2 σ n 的高斯白噪声，A 已知，样本间相互 独立，信号与噪声相互独立; 相位θ 是随机变量，它服从均匀分布 1 0 2 ( ) 20 p θ π θ π ?? ≤ ≤ = ??? 其它 1）改变输入信噪比（改变 A 或噪声方差均可），给定虚警概率，画出 输入信噪比与检测概率之间的理论曲线。(注意：理论检测曲线与样本 数有关) 2）改变样本数，用 Monte-Carlo 实验方法得出 PF＝0.001 时输入信噪比 与检测概率之间关系曲线（至少三条），并得出结论。 3）改变 M-C 实验次数，样本数不变，用 Monte-Carlo 实验方法得出 PF ＝0.001 时输入信噪比与检测概率之间关系曲线（至少三条），并得出 结论(Draw the theoretical curve between input SNR and detection probability)

说明：  am modulation in matlab

说明：  单个矩形包络脉冲信号的模糊函数的matlab代码(Envelope of a single rectangular pulse signal ambiguity function of matlab code)

说明：  本代码作为初学者，读取AVI电影（matlab能读的AVI电影难找），并提取关键祯，做差分(The code as a beginner, read AVI movie (matlab can read the AVI movie hard to find), and extract key frames, so differential)

提取信号七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，一个信号段的归一化瞬时频率功率谱密度的最大值，根据信号 QPSK 和16QAM在 XI 轴投影的不同表现，提出特征参数。(extract information based on the instan eous features : 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, a signal to one of the instantaneous frequency of the power spectral density of the maximum, According to 16QAM and QPSK signals XI axis projection in the different performance parameters raised.)