摘要
首先简单介绍了两种直接链路自适应技术AMC,H-ARQ,讨论了不同的用户移动速度对信道估计的影响,说明用户移动速度差别很大时应采用不同的链路自适应技术;然后提出了一种在用户高速移动时的间接链路自适应技术并对其进行了分析,分析结果表明这种间接链路自适应技术在用户高速移动时的性能优于现在通用的直接链路自适应技术。
This paper first introduces two kinds of direct link adaptive technology:AMC and H-ARQ,and discusses the effects of the different mobile speed on channel estimation.It is discovered that different link adaptive technologies should be adopted in different mobile speed.Then we present an indirect link adaptive technology in the case of high mobile speed.The re-sult of the analysis shows that this kind of indirect link adaptive technology is better than the existing direct ones in the high speed mobile speed.[
出处
《电声技术》
北大核心
2002年第11期56-59,共4页
Audio Engineering
关键词
数据通信
移动速度
信道相关性
链路自适应
data communication
mobile speed
channel correlation
link adaptation
