RFID

OFDM-QPSK系统在不同信道（AWGN、AWGN+两径衰落信道、AWGN+三径衰落信道）下的接收端误码性能(three path fading, Gauss white noise)

用有限差分法求电场电势分布，金属盒子接地，电位是0，中间三分之一处有电位是1的长方体，求解其电场电势分布(The electric potential distribution of the electric field is calculated by the finite difference method. The metal box is grounded, the potential is 0, and the 1/3 of the rectangular bodies with the potential is 1, and the electric potential distribution of the electric field is solved.)

4psk仿真作业 仿真4psk的性能曲线 误码率 和理想误比特率(4psk simulation)

说明：  采用MATLAB语言进行瑞利信道建模的源码(Source code of Rayleigh channel modeling with MATLAB)

混合预编码的数字预编码矩阵和模拟预编码矩阵的代码(mm-wave hybrid precode.including bd precode and analog precode)

EEMD分解，通过对信号进行分解重构实现降噪目的( Reduct the signal noise through the decomposition reconstruction)

说明：  多径信道的生成函数 ，瑞利多径衰落信道生成。(Multipath channel generate. This function generates a uncorrelated multipath Rayleigh fading matrix.)

matlab图像处理命令详细说明（中文版） 省去了看英文帮助文件的烦恼(Matlab image processing orders detailed description (Chinese version) save a document of English to help the trouble)

说明：  为了系统的安全性，为门禁控制系统增加了登录功能，通过从后端数据库录入管理员信息，包括用户名与密码，便可在用户界面使用数据库中的信息进行登录，极大的保证了系统的安全性。用户可以通过数据库匹配方法来对ID卡进行登记、删除等操作。(In order to ensure the security of the system, the login function is added to the access control system. By inputting administrator information from the back-end database, including user name and password, the information in the database can be logged on in the user interface, which greatly guarantees the security of the system. Users can register and delete ID cards through database matching method.)

说明：  matlab锁相环解决相干光通信系统激光器相位噪声(Phase-locked loop to solve the phase noise of laser in optical communication system)