After analyzing the pdu data format of gsm short message in detail , the communication programs are designed , such as the encoding and decoding of the unicode and 7 - bit code , the assembling and disassembling of pdu message and so on . through the serial port , the at commands are used to control the gsm module to send and receive short messages and dial , which completes the system communication 文中详细剖析了gsm短信息的pdu数据格式,设计了unicode编码与7位编码的编码和解码、 pdu报文的组装和拆卸等底层通信程序,通过串行口使用at命令控制gsm模块收发短信息和拨号,完成系统的通信。
After this melioration , monitor agent works more initiatively by filtrating the unrelated source data changes ; computational logic for integrator is predigested by the maintained object being changed from multi base tables to single source view on per - source ; the burden of system communication is lessened , and the maintenance efficiency is improved 改进后信息源端的监视代理能够自行过滤掉无关的基表增量,提高信息反应的主动性;集成器的维护对象从每个数据源上的多基表简化为单源视图,集成计算逻辑得到了简化;整个系统的通信资源也减少了,提高了系统维护效率。
As the distributed wireless system communication becomes a tendency of future public wireless access , the organic combination of distributed antenna and mimo , termed as da - mimo , has become the hotspot of mimo wireless communications research . the signal detection is one of the key techniques in the field of da - mimo system 随着分布无线通信系统成为未来公共无线接口发展的一种新趋势,多入多出与分布式天线技术的有机结合? ?分布mimo成为mimo无线通信领域新的研究热点,分布mimo信号检测是其中的关键技术之一。
First , it gives a comprehensive introduction and analysis on the cti technology . then it introduces the subscriber call procedure on telephone network and some power system communication criterion . on the basis of analysis on dispatching telephone test flow , model and mathematical analyzing , the author developed a valuable dispatching - telephone auto - test system based on the cti technology 文中首先对cti技术进行了较为全面的介绍和分析,其后介绍了电话网络中用户线部分的呼叫过程及电力系统通信网络的一些行业标准,在对调度电话测试流程、模型及数学分析的基础上,基于cti技术开发出了一套具有较高实用价值的调度电话自动测试系统。