Matlab

该程序可将视频转化为单帧图像，程序较为简单，运行环境matlab7.0(This program can be converted into single frame video images, the program is simple, operating environment matlab7.0)

Image transformation by using fft

Isomap通过“改造一种原本适用于欧氏空间的算法”，达到了“将流形映射到一个欧氏空间”的目的。(Isomap achieved the goal of "mapping manifolds to an Euclidean space" by "reforming an algorithm that was originally suitable for Euclidean space".)

多速率信号处理，包括内插、采样和分数阶速率变换(Multi-rate signal processing, including interpolation, and fractional rate conversion)

本资料包含了系统的matlab建模用算法(This information includes system modeling with matlab algorithm)

QAM和OFDM两种方式性能对比，具有图形界面GUI，并且包括收发两端完成的代码 (QAM and OFDM performance comparison of two ways, with a graphical interface GUI, and includes the sending and receiving ends to complete the code)

Matlab QPSK, testing QPKS code

Optimization In cooperative spectrum sensing in Cognitive radio network

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)

有井曲线作为输入可计算其地震波的衰减,ML法能够很好的估计信号的信噪比,用蒙特卡洛模拟的方法计算美式期权的价格以及基本描述。( There is a well attenuation curve as input to calculate its seismic waves, ML estimation method can be a good signal to noise ratio, Monte Carlo simulation method of calculating the American option price and basic description.)