A Cross-layer Design Over MIMO Rayleigh Fading Channels

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.

关键词： Orthogonal Frequency Division Multiplexing (OFDM) Space-time Coding (STC) Truncated automatic repeat request (T-ARQ) Packet Error Rate (PER)

作者: Xiaofeng Lu Guangxi Zhu Gan Liu Lee Li

作者单位: Department of Electronics & Information Engineering Huazhong University of Science and Technology Wuhan, 43007 4,P.R.China

会议类型: 国际会议

会议名称: 2005年无线通信、网络和移动计算国际会议

会议地点: 武汉

会议语种:英文

页码: 30-33

在线出版日期: 2005-09-23（万方平台首次上网日期，不代表论文的发表时间）