周期信号的频谱分析

LDA的matlab实现，得出alpaha和beta的值(the procedure to implement Latent Dirichlet Allocation ,the end of this procedure is the value of alpha and beta.)

shape recognition with neural network

抑制载波双边带调幅和解调的实现, Matlab代码编写实现. 采用Matlab或者其它软件工具实现对信号进行抑制载波双边带调幅（DSB-SC）和解调，并且绘制： （1）信号 及其频谱； （2）载波 ； （3）DSB-SC调制信号及其频谱； （4）DSB-SC调制信号的功率谱密度； （5）相干解调后的信号波形。 (Carrier suppression bilateral with the realization of amplitude modulation and demodulation, Matlab code prepared to achieve. Using Matlab or other software tools to achieve suppression of signals with carrier bilateral AM (DSB-SC) and demodulation, and mapping: (1) signal and its spectrum ( 2) Carrier (3) DSB-SC modulated signal and its spectrum (4) DSB-SC modulation signal power spectral density (5) coherent demodulation signal waveform.)

说明：  神经网络进行产量的Matlab源代码 BP 神经网络用于预测 (Neural network output of Matlab source code for BP neural network to predict)

均衡效果好，这是基于最大似然估计的均衡器(With the development of high-speed optical fiber communication systems, polarization mode dispersion (PMD) has become a vital limiting factor. However, the traditional compensation methods which in optical domain have the disadvantages of complexity and cost. In recent years, the compensation methods which in electronic domain are given more attention because of their outstanding price advantage and their strong adaptability. The maximum-likehihood sequence estimation (MLSE) equalizer based on the Viterbi algorithm was designed in this paper.The MLSE equalizer can effectively compensate the intersymbol interference caused by polarization mode dispersion (PMD). First, the background and the spectrum of the text were introduced also the principles of PMD and the FFE/DFE equalizer were analysed. Second, the principles of Viterbi and the structure of MLSE were researched also the MLSE equalizer was simulated with the Matlab program in the optical fiber communication systems. T)

通过EMD和wavelet对加噪信号去噪，改善信噪比后进行互相关，提高时延估计精度(To enhance the prediction of time delay,using EMD and wavelet methods to denoising the signal.)

说明：  此程序是用来检验一组已知数据是否服从一定分布的：如，正态分布，t分布，poisson分布等。(This procedure is used to test whether a given set of data to obey a certain distribution: for example, normal distribution, t distribution, poisson distribution.)

solar cell model that represent a PV module connected to a battery

双绞线串扰仿真模型研究Simulation model of twisted-pair crosstalk(Simulation model of twisted-pair crosstalk)

Assignment Conversion of images in different color spaces.