matlabjieequation

不考虑多径干扰时在高斯白噪声和瑞利衰落信道条件下QPSK的调制解调过程， 并采用准分析法完成误码性能的计算。仿真过程包括仿真信号产成，滤波器设置，QPSK调制，加入高斯白噪声，通过锐利信道衰落，QPSK解调，误码率计算等几部分(Not consider multi-path interference at the white Gaussian noise and Rayleigh fading channel under the conditions of the QPSK modulation and demodulation process and the use of quasi-analysis method to complete the calculation of BER. The simulation process includes the middle class into a simulation signal, filter settings, QPSK modulation, by adding Gaussian white noise, through the sharp decline in channel, QPSK demodulation, bit error rate calculation and other parts)

说明：  MATLAB 7编程 数字信号处理源代码(MATLAB)

BACKPROJ uses the filtered or unfiltered backprojection algorithm to perform the inverse Radon transform. The filter is designed directly in the frequency domain and then multiplied by the FFT of the projections. The projections are zero-padded to a power of 2 before filtering to prevent spatial domain aliasing and to speed up the FFT.

本文件包含大量的matlab命令，并附有简单的举例，方便查阅和学习…………(This document contains a lot of matlab command, together with a simple example, for easy access and learning ... ... ... ...)

KSVDBox - Implementation of the K-SVD and K-SVD denoise algorithms.(K-SVD dictionary training. ksvd - K-SVD dictionary training. Signal denoising. ompdenoise - OMP denoising. ompdenoise1 - OMP denoising of 1-D signals. ompdenoise2 - OMP denoising of 2-D signals. ompdenoise3 - OMP denoising of 3-D signals. ksvddenoise - K-SVD denoising. Overcomplete DCT dictionary. odctdict - Overcomplete DCT dictionary. odct2dict - 2-D overcomplete DCT dictionary. odct3dict - 3-D overcomplete DCT dictionary. odctndict - Multi-dimensional overcomplete DCT dictionary. Demonstrations. ksvddemo - K-SVD training demonstration. ksvddenoisedemo- K-SVD denoising demonstration. Miscellaneous. showdict - Display a dictionary of image patches. ksvdver - K-SVD toolbox version information.)

说明：  编写程序建立套管换热器数学仿真 模型，并计算换热器两侧流体沿程温度、对流换热系数、雷 诺数与热流密度的变化规律。(The mathematical simulation model of casing heat exchanger was established by programming, and the variation of temperature, convective heat transfer coefficient, Reynolds number and heat flux along the two sides of the heat exchanger were calculated.)

In this paper, we present two novel class-based weighting methods for the Euclidean nearest neighbor algorithm and compare them with global weighting methods considering empirical results on a widely accepted time series classification benchmark dataset. Our methods provide higher accuracy than every global weighting in nearly half of the cases and they have better overall performance. We conclude that class-based weighting has great potential for improving time series classification accuracy and it might be extended to use with other distance functions than the Euclidean distance.

说明：  此程序用来仿真多径信道,希望能有所帮助，运行稳定。(Simulation of the process used to multi-path channel, hoping to help, running stable.)

说明：  安德森经典著作：最优滤波，学习最优滤波的基础教材(Anderson classics: the optimal filter, optimal filter based learning materials)

snake算法的matlab实现 可以实现，包含了掩饰用例(achieve snake by matlab)