摘要
针对一种树状网调度话在工程中应用,提出了4 kb/s传输带宽、非同源时钟网、低传输时延、低速语音编码、突发码流同步和串联/并联调度话等要求,根据理论计算和工程经验,设计RS-485全双工总线方式,采用差分曼彻斯特编码时钟提取方法,应用突发码流同步技术、PN码自相关技术和AMBE声码化技术,实现调度话树状组网功能,链路6跳接续功能,依据优先级强插和强拆功能,及调度话双向通话功能,树状网调度话可应用于军队、武警、煤矿等指挥调度领域。
Aiming at a tree network dispatch communication engineering application, the requirements like 4kb/s transmission bandwidth ,non-same source clock network, low transmission time delay, low speed speech coding, burst stream synchronization and parallel/serial connection dispatch communication are presented.According to the theoretical calculation and engineering experiences, the RS-485 full duplex bus mode is designed. By adopting differential Manchester encoding clock extraction method, burst stream synchronization technology, PN code auto correlation technology and AMBE acoustic coding technology,the dispatch communication tree networking function,link 6-hop connection function, privilege based barge and forced release function as well as the bi-directional dispatch communication function can be achieved. The tree network dispatch communication can be applied in the command and dispatch in the fields like military, armed police and coal mining.
出处
《无线电通信技术》
2014年第1期82-85,共4页
Radio Communications Technology
基金
国家部委基金资助项目
关键词
树状网调度话
突发码流同步
PN码自相关
差分曼彻斯特编码
AMBE声码化
全双工RS-485总线
tree network dispatch communication
burst stream synchronization
PN code auto correlation
differential manchester encoding
AMBE acoustic coding
RS- 485 full duplex bus
