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ofdm信道特性 Channel transmission simulator Channel transmission simulator ％ ％ inputs: ％ sig2 - noise variance ％ Mt - number of Tx antennas ％ Mr - number of Rx antennas ％ x - vector of complex input symbols (for MIMO, this is a matrix, where each column ％ is the value of the antenna outputs at a single time instance) ％ H - frequency selective channel - represented in block-Toeplitz form for MIMO transmission ％ N - number of symbols transmitted in OFDM frame ％ ％ outputs: ％ y - vector of channel outputs (matrix for MIMO again, just like x matrix) ％ create noise vector sequence (each row is a different antenna, each column is a ％ different time index) note: noise is spatially and temporally white(channel characteristics of OFDM Channel transmission simulatorChannel transmission simulator inputs: sig2- noise variance Mt- number of Tx antennas Mr- number of Rx antennas x- vector of complex input symbols (for MIMO, this is a matrix, where each column is the value of the antenna outputs at a single time instance) H- frequency selective channel- represented in block-Toeplitz form for MIMO transmission N- number of symbols transmitted in OFDM frame outputs: y- vector of channel outputs (matrix for MIMO again, just like x matrix) create noise vector sequence (each row is a different antenna, each column is a different time index) note: noise is spatially and temporally white)

简单的指纹识别系统，包括增强、二值化、细化、匹配等(Simple fingerprint identification system, including enhancement, binarization, thinning, matching and so on)

说明：  在线订单系统，HPH程序，在线，订单，欢迎大家下载(Online order system, HPH program, online, order, welcome to download)

anasys热分析教程与实例解析，主要讲解用anasys进行热分析的步骤。(anasys tutorials and examples of analysis of thermal analysis, mainly on the thermal analysis with anasys steps.)

一个linux论坛- A linux forum

ssh开发的中国移动登录系统，功能包含：注册，登录，查询。-ssh development of China Mobile sign-on system, features include: registration, login, query.

说明：  rtthread nano的模板，有基本的内核部分，可以完成线程调度、信号量传递等等(rtthread nano have the core can do thread and transmit the signals)

俄罗斯方块程序之4：俄罗斯方块改进版支持双打，程序简洁明快，游戏性强，虽功能不多但程序完善。-Tetris four procedures : improved version of Tetris support doubles, procedures briefness, games strong, although functional small but complete procedures.

ansys 导入到adams中做刚柔耦合分析方法二，采用质量单元mass21，希望大家在adams中做刚柔耦合分析有所帮助(ansys and adams work together)

简单的keystone变换实现距离补偿，自测可用(Distance compensation based on simple keystone transform)