摘要
提出了一种基于V-BLAST系统的跨层设计方案,综合考虑物理层的自适应调制和链路层的截短ARQ技术,推导了平坦衰落信道下的频谱效率和中断率。数据仿真结果表明,这种联合设计可以降低V-BLAST系统的中断率,并且获得可观的频谱效率增益。
The combination of adaptive modulation (AM) at physical layer and truncated automatic repeat request at data link layer in V-BLAST system is considered in this paper.We deduce the spectral efficiency and the outage probability from our proposed design over frequency-flat Rayleigh channels.Numerical results reveal that the joint design of AM and truncated ARQ in V-BLAST system can achieve considerable spectral efficiency gain and outage probability reduction.
出处
《计算机工程与应用》
CSCD
北大核心
2006年第24期4-6,12,共4页
Computer Engineering and Applications
基金
国家自然科学基金资助项目(编号:60502023)
湖北省自然科学基金资助项目(编号:2006ABA077)
关键词
自适应调制
截短ARQ
垂直型贝尔实验室分层空时结构
误包率
Adaptive Modulation(AM),Truncated Automatic Repeat Request(T-ARQ),Vertical Bell-Labs Layered Spacetime System(V-BLAST),Packet Error Rate(PER)