链路自适应技术在流星余迹通信中的应用  

Application of Link Adaptation in Meteor Trail Communication

作　　者：张永涛[1] 叩瑞龙[1] 

机构地区：[1]中国电子科技集团公司第五十四研究所,河北石家庄050081

出　　处：《无线电通信技术》2010年第2期50-52,共3页Radio Communications Technology

摘　　要：流星余迹通信具有其他通信系统无法比拟的优点,如:大跨距、抗干扰、低截获概率特性和抗毁性等特点,使得这种通信方式的应用范围越来越广泛,尤其是支援短波通信及用作卫星通信的替补手段。但是流星余迹信道又是一种典型的突发信道,通信容量小和实时性差。为了最大限度地利用短暂的流星余迹信道,人们设计了链路自适应技术。此技术能够根据信道状况自动调整发射机和接收机的参数,使得流星余迹信道资源得到最大限度的利用。Meteor burst communications have many advantages over other communication systems,such as large span communication,anti-jamming,low probability of intercept,anti-destroying,etc,which make meteor burst communication more popular,especially act as the means of replacing shortwave communication and satellite communication.However the meteor trail is a typical burst communication channel which has low communication capacity and poor real-time performance.The link adaptation technology is designed to take advantage of the meteor trail channel furthest.This technology can be used to achieve the best performance of communication by changing the parameters of transmitter and receiver according to the variation of the mobile channel dynamically,and make the meteor trail channel resource be used furthest.

关 键 词：流星余迹通信 动态信道估计 链路自适应 信噪比 

分 类 号：TN911.22[电子电信—通信与信息系统]