ldpc

用Matlab仿真了对称阵子的方向图，阻抗特性和辐射阻抗(The stream of Matlab simulation with the direction of the symmetric map, impedance characteristics and radiation impedance)

三步法哪l是一种较好的搜索算法，快速而且高效，它是在对数法的基础上对 其进行了改进，提出在每一步搜索后搜索步长均减半的算法。它基本保持了FS的 性能，但其计算量只有FS的10％左右。TSS在会议电视和可视电话中应用较多， 它通过三步搜索，逐步较小搜索步长。若最大搜索范围为士7，搜索精度取一个像 素，则步长为4、2、1，共需三步即可满足要求，从而得名。 (L three-step method which is a better search algorithm, fast and efficient, it is on the basis of the number of law be improved, made in every step of the search after the search step of the algorithm are reduced by half. It basically maintained the performance of FS, but the calculation is only about 10 of FS. TSS at the meeting on television and video telephony in the application of more three-step search through progressively smaller search step. If the maximum search range of disabilities 7, search for a pixel accuracy, the step size for the 4,2,1, a total of three steps to meet the requirements, thus its name.)

说明：  matlab 基于形状的图像检索算法 关于七个不变矩的主要算法 中调用步骤！ ！！！！！！(matlab image retrieval algorithm based on the shape of seven invariant moments on the main algorithm, called the steps! ! ! ! ! ! !)

微带多模谐振器的谐振频率的提取程序，就是在已知线宽，线长和介质基底的情况下如何计算得到其多个谐振频率。学习多模谐振器数值分析的同学可以参考一下。(Multi-mode microstrip resonator resonance frequency extraction procedure is known in the case of the line width, line length and the dielectric substrate to which a plurality of resonance frequencies calculated. Learning multimode resonator numerical analysis of the students can refer to.)

MATLAB code for gradient descent using cross-entropy error function and regularization

CSI in a channel no awgn

这是一个输出函数曲线的演示程序，学习matlab的可参考(This is an output function curve of the demo application, learning matlab can be reference)

基于均匀线阵对窄带信号进行波达方向(DOA)估计，具有良好的分辨率。(Based on narrowband uniform linear array of signal DOA (DOA) estimation, with good resolution.)

electronics related subjects details to get success in public sector and academic exams and for to get full marks without negative marking

从介绍功率谱的估计原理入手分析了经典谱估计和现代谱估计两类估计方法的原理、各自特点厦在Maflab中的实现 方法。(Start from the introduced power spectrum estimation principle analysis of the classical spectrum estimation principle of two types of estimation methods and modern spectral estimation, the respective characteristics of buildings in Maflab implementation method.)