sd模型

短信群发系统，在一些业务范围广泛的公司中，当公司有了新的通知要告诉在外地的员工，通常使用拨打电话的方式，这样虽然能把事情说清楚，但是当在外的员工比较多时，工作量很大，为了解决这个问题，可以开发一个企业短信群发管理系统。企业短信群发管理系统主要利用硬件短信猫发送短信，并且可以查看SIM卡中收到的短信。(Mass messaging system, in a number of business a wide range of companies, when the company has a new notification to tell the staff in the field, normally used by calling the way, so although things can make it clear, but when the staff out for a long time compared , the heavy workload, in order to resolve this problem, can develop an enterprise management system for mass text messaging. Short Message management system for enterprises mainly use the hardware to send SMS text messages a cat and can view the SIM card text messages received.)

说明：  FreeModbus_Slave-Master-RTT-STM32-master V1.6

说明：  一种ldpc编码方法，非常的实用，简洁，快速。侵权删(a method)

四方公司CSC300E远动机的程序，里面包括104、101、cdt、disa等规约的代码，要保密！(CSC300EA FOR RTU)

关于天线原理的PPT。等同于教科书。很全。(PPT of antenna principle.Can be used as teaching book. A complete one.)

说明：  MIMO-OFDM系统仿真，MIMO-OFDM系统不同信道估计的对比，模型框架的搭建(MIMO-OFDM (Simulink and Matlab))

HLP A+ Modbus 标准通讯协议格式，上位机发送数据格式，正确时变频器返回数据格式(This bit will be set to logic 1 when the receive buffer has been read and contains no new information. If there is new information available in the receive buffer that has not been read, this bit will return to logic 0. RXBMT = 1 when in Master Mode.)

这是一个关于gmsk和msk性能分析比较的源程序，能很好的实现GMSK频谱和功率谱。(this a matlab program about gmsk and msk s dpinpu and gonglvpu.)

multipath signal description with read technique

说明：  按信源编码、信道编码、传输、解码、计算分析的过程模拟实际MIMO技术的误比特率(Simulate the bit error rate of real MIMO technology according to the process of source coding, channel coding, transmission, decoding and calculation analysis)