xishutu

数字基带系统将数字信号从时域上看时数字滚降，需要画出滚降前后的波形展示出来。频域上带宽变化了。输入滤波器之前的波形与采样判决之后的波形。采样判决前的频谱。 采样判决后的码型。 2、眼图（采样判决之前的眼图）（信噪比大眼图清晰） 3、误码曲线，（横坐标时信噪比，纵坐标时误码率） 4、Arfa变化对误码特性的影响，变好还是变差(变好)，眼图清晰度变化（清晰），传递函数的带宽的变化。（带宽越大）(1.Digital baseband system point of view the digital signal from the time domain when the number of roll-off, you need to draw the waveform displayed before and after the roll-out. The frequency domain, the bandwidth change. Input filter and sample ruling before the wave after wave. Sample pre-judgment spectrum. Sampling pattern after the verdict. 2, the eye diagram (eye before sampling decision) (SNR big eye clear) 3, the error curve (abscissa when the signal to noise ratio, bit error rate when the vertical axis) 4, Arfa impact of change on BER performance, get better or worse (getting better), change of eye-definition (clarity), the transfer function of the bandwidth changes. (The greater the bandwidth))

重要参数的提取，包括单边带、双边带、载波抑制及四倍频,使用混沌与分形分析的例程。( Extract important parameters, Including single sideband, double sideband, suppressed carrier and quadruple, Use Chaos and fractal analysis routines.)

外国人写matlab 的gobor特征运算工具箱，包括一，二维gobor特征提取工具。(Matlab Toolbox for Gabor Features in Signal and Image Processing. v0.4.1)

为使随机序列具有相关性，这里是相关高斯序列生成的一种方法(co rrelated Gaussian sequences)

chirp信号matlab仿真，确定无误，欢迎下载(chirp，simulink)

Matlab小波分析工具箱原理与应用 电子版书籍(Matlab wavelet analysis toolbox principle and application of the electronic books)

the Ali_g_test is a simulink file for dc motor is to be used with Ali_PID_ga m file.

Author: Xianju Wang Summary: 2 Dimensional Spectral Estimation MATLAB Release: R12 Description: Estimating the power spectrum associated with a random process is desirable in many applications. This package includes four important 2-D spectral estimation methods.(Periodogram, Autorrelation Method, Covariance Method, Modified Covariance Method).(Author : Xianju Wang Summary : 2 Dimensional Spectral Estimation MATLAB Rele ase : R12 Description : Estimating the power spectrum associated with a random process is desirable in many applicati ons. This package includes four important 2-D's pectral estimation methods. (Periodogram. Autorrelation Method, Covariance Method. Modified Covariance Method).)

regarding LDPC..... Low Density Parity Check

本程序是线阵的波束形成程序，可以在特定方向生成零陷，从而抑制干扰信号(This procedure is a linear array of beam forming process, you can generate zero in a specific direction, thereby suppressing the interference signal )