A cross-layer design over MIMO Rayleigh fading channels

被引:8
|
作者
Lu, XF [1 ]
Zhu, GX [1 ]
Liu, G [1 ]
Li, L [1 ]
机构
[1] Huazhong Univ Sci & Technol, Dept Elect & Informat Engn, Wuhan 430074, Peoples R China
关键词
orthogonal frequency division multiplexing (OFDM); space-time coding (STC); truncated automatic repeat request (T-ARQ); packet error rate (PER);
D O I
10.7150/ijms.2.30
中图分类号
TN [电子技术、通信技术];
学科分类号
0809 ;
摘要
The combination of adaptive space-time coding at physical layer and truncated automatic repeat request at data link layer is considered in this paper. Three types of space-time code are analysed in the paper: V-BLAST, QOSTBC, and STBC. Furthermore, we deduce the approximate expression of packet error rate based on space-time code and propose a novel adaptive transmission scheme. Numerical results reveal that the joint design of space-time coding and truncated ARQ can achieve considerable spectral efficiency gain. By properly choosing the number of retransmissions, we can get a good tradeoff between delay and spectral efficiency.
引用
收藏
页码:30 / 33
页数:4
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