【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。更多还原

【Abstract】 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.更多还原