PSD_estimators

实现Polar码编码译码，SC译码，简单实用，运行速度快(Polar MATLAB include encode and decode useful and simple)

说明：  这是自由空间路径损耗的代码。里面有多个m文件(This is the code of path loss in free space. There are multiple M files in it.)

STM32F411的心电测试程序，经过测试，绝对可用。(ECG_TESTCMSIScore_cm3.c ECG_TESTCMSIScore_cm3.h ECG_TESTCMSISstartupstartup_stm32f10x_hd.s ECG_TESTCMSISstartupstartup_stm32f10x_ld.s ECG_TESTCMSISstartupstartup_stm32f10x_md.s ECG_TESTCMSISstm32f10x.h ECG_TESTCMSISsystem_stm32f10x.c ECG_TESTCMSISsystem_stm32f10x.h ECG_TESTFWlibincmisc.h ECG_TESTFWlibincstm32f10x_adc.h ECG_TESTFWlibincstm32f10x_bkp.h ECG_TESTFWlibincstm32f10x_can.h ECG_TESTFWlibincstm32f10x_crc.h ECG_TESTFWlibincstm32f10x_dac.h ECG_TESTFWlibincstm32f10x_dbgmcu.h ECG_TESTFWlibincstm32f10x_dma.h ECG_TESTFWlibincstm32f10x_exti.h ECG_TESTFWlibincstm32f10x_flash.h ECG_TESTFWlibincstm32f10x_fsmc.h)

采用Simulink 平台对OFDM 进行仿真，确定系统的参数，完成参数设置，构建了一个简单的OFDM通信系统。(Using Simulink platform to simulate OFDM, determine the parameters of the system, complete the parameter settings, and build a simple OFDM communication system.)

web版微信协议分析。当前分析到登陆部分。举一反三，后续的拉取好友列表和发送消息等协议都好分析出来了。作者：孙强壮。(The web version of the micro-channel protocol analysis. Current analysis to the landing part. Giving top priority to, the subsequent pull friends list and send messages agreements out a good analysis.)

观察者模式实现各模块之间的异步通讯。模拟MFC消息(message router)

Labwindows CVI 中不错的串口编程，串口调试(Good serial programming Labwindows CVI, serial debugging )

ctorrent源码实现，良好的源码架构和精干的代码组织。 (ctorrent source implementation of good source code structure and lean tissue.)

次程序用来仿真线性调频脉冲下的一维距离像，可以对比压缩前后的目标回波信号(Second program is used to simulate the next chirp like a one-dimensional distance, you can compare before and after the target echo signal compression)

交通部发行的城市公共交通IC卡技术规范，用于CPU卡规范(Technical Specification of IC Card for Urban Public Transportation issued by the Ministry of Communications for CPU Card Specification)