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Channel estimation techniques for OFDM systems based on a pilot arrangement are investigated. Channel estimation based on a comb type pilot arrangement is studied through different algorithms for both estimating the channel at pilot frequencies and interpolating the channel. Channel estimation at pilot frequencies is based on LS and LMS methods while channel interpolation is done using linear interpolation, second order interpolation, low-pass interpolation, spline cubic interpolation, and time domain interpolation. Time-domain interpolation is obtained by passing to the time domain by means of IDFT (inverse discrete Fourier transform), zero padding and going back to the frequency domain by DFT (discrete Fourier transform). In addition, channel estimation based on a block type pilot arrangement is performed by sending pilots in every sub-channel and using this estimation for a

两个求信号包络谱和幅值谱的matlab程序，也可求功率谱。(2 effective procedures for the signal envelope spectrum and amplitude spectrum)

最优化缓存分配。系统模型是基站和用户，通过优化用户端缓存分配，使得基站容量最大(Optimizing cache allocation. System model is a base station and the user, by optimizing cache allocation client, making the maximum capacity of base station)

This is a tutorial to help you get started in Matlab. To find more details see the very helpful book Mastering MATLAB 6 by Duane Hanselman and Bruce Littlefield. Examples of Matlab code in this pamphlet are in typewriter font like this. As you read through the sections below type and execute in Matlab all of the examples, either at the  command line prompt or in a test program you make called test.m. Longer sections of code are flagged with the characters begin and end. All of the Matlab code between these two

Plotting graphics Real Gas Van der Waals using MATLAB From Jogja to World

matlab课程编程【谷速软件】自适应中值滤波 (matlab programming courses [Valley] speed adaptive median filtering software)

大气模型计算，本软件可实现计算不同高度的密度、气压等参数。(Atmospheric model calculations, the software can realize a high degree of different density, pressure and other parameters.)

说明：  主要介绍matlab的图形修饰，让你的图更好看(Introduces the modified matlab graphics, so you better look at the map)

说明：  MATLAB程序（附图像），利用HSI色彩空间的AGV对路径进行识别。(MATLAB (AP like), the HSI color space using the right path AGV identification.)

8PSK解调算法的实现，希望对进行调制解调的朋友有所帮助！(8PSK demodulation algorithm, want to be friends modem help!)