-
NumericalAnalysis
使用matlab进行数值分析时重要的参考资料，具体包含内容可以看英文描述(This text is written primarily for students/readers who have a good background of high school algebra, geometry, trigonometry, and the fundamentals of differential and integral calculus. This text includes the following chapters and appendices: . Introduction to MATLAB . Root Approximations . Sinusoids and Complex Numbers . Matrices and Determinants . Review of Differential Equations . Fourier, Taylor, and Maclaurin Series . Finite Differences and Interpolation . Linear and Parabolic Regression . Solution of Differential Equations by Numerical Methods . Integration by Numerical Methods . Difference Equations . Partial Fraction Expansion . The Gamma and Beta Functions . Orthogonal Functions and Matrix Factorizations . Bessel, Legendre, and Chebyshev Polynomials . Optimization Methods . Difference Equations in Discrete Time Systems . Introduction to Simulink . Ill Conditioned Matrices Each chapter contains numerous practical applications supplemented with detailed instructions for using )
- 2009-09-09 19:20:34下载
- 积分：1
-
sourceANDchannel_coding
channel encoding in matlab
- 2010-11-08 06:20:45下载
- 积分：1
-
diversitycooperative-communication
说明： 一个协作系统的设计，对初级学生很有帮助。主要包括协作系统的各种参数。(A collaborative system design, useful for primary students. Includes various parameters of collaboration systems.)
- 2011-03-15 13:52:45下载
- 积分：1
-
Digital-baseband-system
数字基带系统将数字信号从时域上看时数字滚降，需要画出滚降前后的波形展示出来。频域上带宽变化了。输入滤波器之前的波形与采样判决之后的波形。采样判决前的频谱。
采样判决后的码型。
2、眼图（采样判决之前的眼图）（信噪比大眼图清晰）
3、误码曲线，（横坐标时信噪比，纵坐标时误码率）
4、Arfa变化对误码特性的影响，变好还是变差(变好)，眼图清晰度变化（清晰），传递函数的带宽的变化。（带宽越大）(1.Digital baseband system point of view the digital signal from the time domain when the number of roll-off, you need to draw the waveform displayed before and after the roll-out. The frequency domain, the bandwidth change. Input filter and sample ruling before the wave after wave. Sample pre-judgment spectrum.
Sampling pattern after the verdict.
2, the eye diagram (eye before sampling decision) (SNR big eye clear)
3, the error curve (abscissa when the signal to noise ratio, bit error rate when the vertical axis)
4, Arfa impact of change on BER performance, get better or worse (getting better), change of eye-definition (clarity), the transfer function of the bandwidth changes. (The greater the bandwidth))
- 2011-06-03 23:04:22下载
- 积分：1
-
111opt
非常经典的最优化程序，里面黄金分割、拟牛顿、对偶单纯形，故向大家推荐(Very classical optimization procedures, which Golden Section, Quasi-Newton, dual simplex, so to recommend)
- 2008-12-24 20:18:59下载
- 积分：1
-
DCTlicheng
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)
- 2013-11-25 16:00:24下载
- 积分：1
-
youxuliebiaocharu
有序列表的插入，每次添加新数据时，保证整个列表的有序性(Into an ordered list, every time you add new data, to ensure the orderly nature of the entire list)
- 2010-09-28 18:30:57下载
- 积分：1
-
capacity-improvement
说明： 认知场景下的功率分配问题源码，这时要考虑次用户对主用户的干扰(Cognitive power allocation scenarios source, this time to consider the sub-user interference of the primary user)
- 2011-03-23 22:49:55下载
- 积分：1
-
subd3
二次逼近法计算tsp旅行商问题 (Quadratic approximation method to calculate the traveling salesman problem tsp)
- 2011-08-10 20:06:22下载
- 积分：1
-
multiple-unicast
code run output for multiple paths for aodv only
- 2015-03-15 21:36:37下载
- 积分：1
