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gold序列用于跳频通信，给出了gold序列生成跳频序列的生成函数，并给出高斯白噪声和多用户干扰下的误码率曲线。(gold sequence for frequency hopping communications, give the gold sequence generated hopping sequence generation function, and to give white Gaussian noise and multi-user interference of the bit error rate curve.)

this contains simulated model of 3 phase inverter in 180 degree mode

无参考的图像质量评价算法，基于图像的空域与频域的信息熵，超过现存的所有质量评价算法。(No reference image quality uation algorithm, and information based on spatial frequency domain of the image entropy over all existing quality uation algorithm.)

Recently, both to return to my old love for evolution and to broaden my research horizon, I have started working on models simulating the dynamics of evolutionary processes. It is becoming clearer and clearer in biology that to understand form,

This algorithm predicts the received signal strength for the mobile user to avoid fluctuation in received signal strength during localization of the mobile user

说明：  Fuzzy C-means algorithm for clustering a data set

本案例通过对图像加入高斯噪声，利用sym4小波函数对该图像和信号进行三级分解，用小波阀值去噪的方法对该图像进行去噪，并给出了仿真结果。(This case through join Gaussian noise image, use the sym4 wavelet decomposition of the image and signal, the wavelet threshold to filter method for the image denoising is presented, and the simulation results.)

QPSK,BPSK,PSK simulation for BER performance

天线方向图的波达方向，用于描述回波的方向图1，可以用于初学者学习使用(the antenna dir)

用Fourier变换求取信号的功率谱---周期图法 用Fourier变换求取信号的功率谱---分段周期图法 用Fourier变换求取信号的功率谱---welch方法 功率谱估计----多窗口法（multitaper method ,MTM法） 功率谱估计----最大熵法（maxmum entmpy method,MEM法） 功率谱估计----多信号分类法（multiple signal classification,music法）Fourier transform to strike a signal to the power spectrum - the cycle of plans Fourier transform to strike a signal to the power spectrum - Sub-cycle Method Fourier transform to strike a signal to the power spectrum --- welch method Power spectrum estimated more than window ---- Law (multitaper method, MTM) ---- Power spectrum estimate of maximum entropy (maxmum entmpy method, MEM) ---- More than the estimated power spectrum signal classification (multiple signal classification, music)(To strike a signal with Fourier transform power spectrum- periodogram to strike a signal with Fourier transform power spectrum- Sub-periodogram with Fourier transform power spectrum of the signal to strike-welch method of power spectrum estimation multi-window method (multitaper method, MTM method) Maximum entropy power spectrum estimation method (maxmum entmpy method, MEM law) power spectrum estimation multi-signal classification (multiple signal classification, music law) Fourier transform to strike a signal to the power spectrum- the cycle of plans Fourier transform to strike a signal to the power spectrum- Sub-cycle Method Fourier transform to strike a signal to the power spectrum- welch method Power spectrum estimated more than window Law (multitaper method, MTM) Power spectrum estimate of maximum entropy (maxmum entmpy method, MEM ) More than the estimated power spectrum signal classification (multiple signal classification, music))