Mmovvedeteecto

详解MATLAB数字图像处理[张德丰][程序源代码] 源代码第2部分(Xiang Jie MATLAB image processing [Zhang Defeng] [source code] source code for Part 2)

ofdm系统的matlanb仿真，包含星座图，加窗，误码率等，希望对大家有帮助(ofdm system matlanb simulation, including the constellation, adding windows, error rate, we want to help)

跳频（占空比为0.5）4fsk的部分频带干扰误码率计算，这个程序是基于matlab的，自己编的，呵呵(Frequency Hopping (duty cycle 0.5) 4fsk the partial band interference bit error rate, this procedure is based on matlab, and their series, Oh)

研究表明，构成K一L变换矩阵的向量也就是ToePhtz矩阵的特征向量。与此同时，离散 余弦变换矩阵逼近于ToePutz矩阵的特征向量矩阵，所以离散余弦变换矩阵与自然图像的 K一L变换矩阵十分相似。经过离散余弦变换后的变换系数块的协方差矩阵Cy非常接近对角 阵，即除了对角线元素以外，其它很多元素都近似为0，并且在左上角集中了主要能量。这 反映了自然图像大部分区域变化不大，亮度突变只占少数，即图像能量以低频成分为主的特 性。通过变换后的量化，舍弃对视觉效果影响较小的次要信息，可达到进一步的压缩效果。 虽然从去相关性能的意义上讲，DCT是一种次于K一L变换的准最佳变换，但是从算法实现的角度来看，DCT则远远优于K一L变换。首先，当图像的分块大小确定后，DCT的变换矩阵也就随之确定了，不随输入信号的统计特性变化而变化 其次，二维DCT能够分解成两次一维DCT，有利于硬件实现。 (Studies have shown that constitute a K L transformation matrix vector is ToePhtz eigenvector of the matrix. At the same time, discrete The cosine transform matrix approximation in ToePutz matrix eigenvector matrix, so the discrete cosine transform matrix and natural images Is very similar to a K L transformation matrix. After discrete cosine transform, the transform coefficient block of Cy is very close to the diagonal of covariance matrix Matrix, namely except diagonal elements, many other elements are approximate to 0, and focused the main energy in the upper left corner. this Reflects the natural images most area changed little, brightness mutations accounted for only a few, the energy is given priority to with low frequency components of image Sex. Through quantitative after transformation, abandoning smaller effect on the visual performance of secondary information, can achieve further compression effect. Although from related to the performance of the sense, DCT is a kind o)

Matlab数据类型和结构分析Matlab data types and structural analysis(Matlab data types and structure of Matlab data types and structural analysis)

滚降系数为0.5，载波频率fc=40/T.基带信号的频谱和幅度已调信号的频谱。(Roll-off factor of 0.5, the carrier frequency fc = 40/T. base-band signal spectrum and amplitude spectrum signals have been transferred.)

基于simulink的无线通信系统的设计，希望对大家有帮助(Simulink-based wireless communication system design, we hope tobangzhu)

it is also a matlab code for the ecg signal analysis diagnoses

这是一个matlab程序，用互信息法求混沌重构时延的主程序(This is a matlab program, the main delay for chaotic reconstruction method using mutual information)

The Matrix Cookbook 这个资料包含了矩阵的各种运算公式，对于不熟悉矩阵运算的朋友可以看看(The Matrix Cookbook This information contains a variety of computing equation matrix matrix operations are not familiar friends can see)