Sum degrees-of-freedom of two-unicast wireless networks
Sum degrees-of-freedom of two-unicast wireless networks
复制标题
两个单播无线网络的总自由度
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
A. Avestimehr
中科院分区：
文献类型：
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作者：
Ilan Shomorony;A. Avestimehr
我们考虑两个源两个目的地（即，双单播）多跳无线网络，其具有任意连接性的分层结构。我们表明，如果信道增益是独立地从连续分布，然后，概率为1，两个单播分层高斯网络只能有1，3/2或2和自由度。我们提供了必要和充分条件，为每种情况下的网络拓扑结构和一个新的概念的源-目的地路径与可管理的干扰。
We consider two-source two-destination (i.e., two-unicast) multi-hop wireless networks that have a layered structure with arbitrary connectivity. We show that, if the channel gains are independently drawn from continuous distributions, then, with probability 1, two-unicast layered Gaussian networks can only have 1, 3/2 or 2 sum degrees-of-freedom1. We provide necessary and sufficient conditions for each case based on the network topology and a new notion of source-destination paths with manageable interference.