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CDMA信号调制解调，采用直接序列扩频，过加性高斯白噪声下的误码率计算。(the model of CDMA)

说明：  品质因子(衰减的倒数)的计算程序，有井曲线作为输入可计算其地震波的衰减。(Quality factor (inverse of attenuation) of the computer program, a well calculated curve as the input attenuation of seismic waves.)

杜达的《模式分类》第二版的配套的Matlab源代码,相信对大家一定会有帮助(Selecting the "classification" of the second version of the Matlab supporting source code, I believe it will benefit everyone)

粒子群算法，自带测试函数 (Particle swarm optimization algorithm)

跳频通信中采用BPSK调制之后的信号输出(the output of the signal after using BPSK modulation in frequency hopping communications)

a trial version of PCA and Knn to face recognition. This file is not a full version of a code knn, however it is a good approach to start one.

利用K近邻法实现数字识别算法。误差小，识别效率高，网络训练速度快。(K-nearest neighbor algorithm, digital identification algorithm. Error is small, high recognition efficiency and speed of network training.)

根据能量密度梯度对细胞图像及边缘进行加强。(According to the energy density gradient on cell image and edge enhanced.)

参考Matlab提供的模块建立简化的三相锁相环的仿真模型，只保留必要的步骤，如abc-dqz只计算Vq，去除频率反馈模块和自动参数调整模块等。 建立单相锁相环的计算模型  简化单相锁相环的系统结构，保留必要的PI控制器等模块  验证并讨论输入信号频率在45-65Hz变化时设计的锁相环的动静态性能  仿真并分析三相输入信号包含谐波、不平衡和直流偏移时锁相环的锁相结果(Reference Matlab provides three-phase PLL module to establish a simplified simulation model, retaining only the necessary steps, such as abc-dqz counting only Vq, remove frequency feedback module and automatic parameter adjustment module.  simulation and analysis of the three-phase input signal contains harmonics, unbalance and DC offset PLL phase-locked Results)

数学实验与Matlab程序zxymath_matlab_program 对于初学者,是一份不错的自学资料. (Matlab mathematical and experimental procedures zxymath_matlab_program right in the beginners, is a good self-study information.)