Optimal design of non-regenerative MIMO wireless relays
Optimal design of non-regenerative MIMO wireless relays
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DOI：
10.1109/twc.2007.05527
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发表时间：
2007-04-01
影响因子：
10.4
通讯作者：
Hua, Yingbo
中科院分区：
文献类型：
--
作者：
Tang, Xiaojun;Hua, Yingbo
给定多天线源和多天线目的地，在有用的情况下，源和目的地之间的多天线中继是期望的。非再生多天线中继，也称为非再生MIMO（多输入多输出）中继，旨在优化源和目的地之间的容量。在源端和目的端之间没有直接链路的情况下，首先建立中继矩阵的最优规范坐标，然后沿这些坐标找到最优功率分配沿着，最优中继矩阵的系统容量明显高于启发式中继矩阵.当存在直接链路时，讨论了最优系统容量的上界和下界。
Given a multiple-antenna source and a multiple-antenna destination, a multiple-antenna relay between the source and the destination is desirable under useful circumstances. A non-regenerative multiple-antenna relay, also called nonregenerative MIMO (multi-input multi-output) relay, is designed to optimize the capacity between the source and the destination. Without a direct link between the source and the destination, the optimal canonical coordinates of the relay matrix are first established, and the optimal power allocations along these coordinates are then found. The system capacity with the optimal relay matrix is shown to be significantly higher than those with heuristic relay matrices. When a direct link is present, upper and lower bounds of the optimal system capacity are discussed.