Routing and Power Allocation in MIMO Two-Way Multihop Networks: A New Cross-Layer Approach to Mitigate Interference
Routing and Power Allocation in MIMO Two-Way Multihop Networks: A New Cross-Layer Approach to Mitigate Interference
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DOI：
10.1109/glocom.2010.5683512
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发表时间：
2010-12
期刊：
影响因子：
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通讯作者：
Rindranirina Ramamonjison;Jonghyun Lee;K. Sakaguchi;K. Araki
中科院分区：
文献类型：
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作者：
Rindranirina Ramamonjison;Jonghyun Lee;K. Sakaguchi;K. Araki
我们提出了一种新的跨层方法来减轻多跳网络中的干扰。准确地说，我们取消所有相邻节点的干扰在多跳路径中的MIMO双向中继方案，并联合优化路由和功率分配，以减轻来自远节点的干扰。我们使用几何规划框架建模并有效地解决了这个优化问题。我们的仿真结果表明，这种跨层的方法提供了显着的端到端的容量增益和优于传统的多跳方案。此外，在干扰受限的情况下，跳数范围从2到6是最佳的。最后，单跳MIMO路由仅在非常高的SNR情况下才能提供更高的容量。
We propose a new cross-layer approach to mitigate interference in multihop networks. Precisely, we cancel all adjacent node interference in a multihop path by MIMO two-way relay scheme and jointly optimize the routing and power allocation to mitigate the interference from far nodes. We model and efficiently solve this optimization problem using a geometric programming framework. Our simulation results showed that this cross-layer approach provided significant end-to-end capacity gain and outperformed conventional multihop schemes. Also, a number of hops ranging from 2 to 6 was optimal in interference-limited regime. Finally, single hop MIMO routing was shown to provide higher capacity only in very high SNR scenarios.