__RF_Circuit_Design__Theory_and_Applications(1)

第 5 代移动通信系统 (5G) 是面向 2020 年之后的新一代移动通信系统 , 其技术发展尚处于探 索阶段 . 结合国内外移动通信发展的最新趋势 , 本文对 5G 移动通信发展的基本需求、技术特点与可 能发展途径进行了展望 , 并分无线传输和无线网络两个部分 , 重点论述了富有发展前景的 7 项 5G 移 动通信关键技术 , 包括大规模天线阵列、基于滤波器组的多载波技术、全双工复用、超密集网络、自 组织网络、软件定义网络及内容分发网络 . 本文还概括性地介绍了国内 5G 移动通信的相关研发活 动及其近期发展目标 .(The fifth generation mobile communication system (5G) is a new generation of mobile communication system after 2020. Its technological development is still in the exploratory stage. Combining with the latest trends of mobile communication development at home and abroad, this paper prospects the basic needs, technical characteristics and possible development ways of 5G mobile communication development, and divides wireless transmission and wireless network into two parts, focusing on rich. Seven key technologies of 5G mobile communication, including large-scale antenna array, filter bank-based multi-carrier technology, full duplex multiplexing, ultra-dense network, self-organizing network, software definition network and content distribution network, are prospected. The related research and development activities and recent development goals of 5G mobile communication in China are also briefly introduced in this paper.)

说明：  基于lena图像的3层小波的图像分解与重构(Lena image-based 3-layer wavelet decomposition and reconstruction of images)

滑模变结构仿真，malab源程序。滑模变结构控制算法简单、鲁棒性好和可靠性高，故被广泛应用于运动控制中，尤其被用于可建立精确数学模型的确定性控制系统中(SMVSC simulation, malab source. Sliding mode variable structure control algorithm is simple, good robustness and high reliability, it is widely used in motion control, especially be used to establish a precise mathematical model can be deterministic control system)

说明：  宽带、窄带AR模型，对于不同的N,P,SINR的谱估计的对比分析(Broadband, narrowband AR model, for different N, P, SINR Comparison of spectrum estimation)

该文件程序可用于任意螺旋锥齿轮加工参数的齿面数据点的输出，可直接修改参数，得出对应的齿轮齿面，为齿轮的建模和TCA提供一定的基础。(The output of the file that can be used for any machining parameters of spiral bevel gear tooth surface data points, you can directly modify the parameters derived corresponding gear tooth surface, providing a foundation for modeling gear and TCA.)

C. Torrence博士在分析厄尔尼诺现象时的示例程序，包含小波的重构部分，非常经典，该文被引用超过2400次(C. Torrence Dr El Nino phenomenon in the analysis of the sample program, including reconstruction of part of the wavelet, very classic, the paper cited more than 2400 times)

newton rapson method matlab program

对于形心分析和算例,方便大家学习和使用.(For example centroid analysis and to facilitate them to learn and use.)

we will easily find out the agriculture region and man made region using hidden markov model

说明：  MATLAB帮助,很好的初学者教程，很有用(MATLAb help，it is very usefull)