power

This paper investigates the design of joint frequency offset and carrier phase estimation of a multi-frequency time division multiple access (MF-TDMA) demodulator that is applied to a digital video broadcasting—return channel system via satellite (DVB-RCS). The proposed joint estimation algorithm is based on the interpolation technique for two correlation values in the frequency and phase domains. This simple interpolation technique can significantly improve frequency and phase resolution capabilities of the proposed technique without increasing the number of the correlation values. In addition, the overall block diagram of a digital communications receiver for DVB-RCS is presented, which was designed using the proposed estimation algorithms. Index Terms—Carrier phase estimation, DVB-RCS, frequency offset estimation, interpolation, joint estimation, MF-TDMA.(This paper investigates the design of joint frequencyoffset and carrier phase estimation of a multi-frequency time divisionmultiple access (MF-TDMA) demodulator that is applied toa digital video broadcasting-return channel system via satellite (DVB-RCS). The proposed joint estimation algorithm is based onthe interpolation technique for two correlation values in the frequencyand phase domains. This simple interpolation techniquecan significantly improve frequency and phase resolution capabilitiesof the proposed technique without increasing the number ofthe correlation values. In addition, the overall block diagram of adigital communications receiver for DVB-RCS is presented, whichwas designed using the proposed estimation algorithms.Index Terms-Carrier phase estimation, DVB-RCS, frequencyoffset estimation, interpolation, joint estimation, MF-TDMA.)

基于隐马尔科夫模型的人脸识别系统，包含完整的测试程序(Hidden Markov Model based face recognition system, including a complete test program)

一个关于matlab的基础知识的介绍，希望能对初学者有帮助！(A basic knowledge of matlab introduction, hoping to be helpful for beginners!)

分别用三段直线和imadjust函数对图像进行对比度增强，并可以比较结果。(Three lines and imadjust function of image contrast enhancement, and can compare the results.)

简单介绍脉冲压缩前后的对比，数据清晰明了，代码简单易懂，使读者能够直观读懂脉冲压缩体制(Compare before and after a brief pulse compression, data clarity, the code is simple to understand, so that readers can intuitively understand the pulse compression system)

估计功率谱的经典方法，即周期图和修正周期图法(Estimate the power spectrum of the classic method, ie, the period map and corrected periodogram)

three level diode clamped D Csource Testing

Image Compression using Artificial Neural Networks This code is developed in MATLAB 6.5 and can used in Windows platform. Program contain all necessary files. For training the network use Train.m and Codec.m compress images by trained network.

该程序用matlab语言编写的计算机潮流计算程序。(the procedures used Matlab language trend of the computer program.)

Image Enhancement for enhancement the image by using the digitneg for enhancement the image by using the digitneg