Mutual Information and Energy Tradeoff in Correlated Wireless Sensor Networks
Mutual Information and Energy Tradeoff in Correlated Wireless Sensor Networks
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DOI：
10.1109/icc.2008.826
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发表时间：
2008-05
期刊：
影响因子：
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通讯作者：
L. Pillutla;V. Krishnamurthy
中科院分区：
文献类型：
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作者：
L. Pillutla;V. Krishnamurthy
我们考虑在相关的无线传感器网络（WSN）中的相互信息（MI） - 能源折衷的比较，用于合作多重输入和多重输出（MIMO）和非合作性（称为单个输入和单个输出（SISO））传输方案。我们的数值结果表明，与合作的MIMO计划相比，SISO方案实现更高的Mi-Energy权衡，而长距离合作的MIMO方案实现了更好的Mi-Energy折衷。接下来，我们考虑在相关的WSN中放置传感器的问题。具体而言，我们证明节点之间的间距最大化MI通常是观察SNR的越来越多的功能。从这种结构结果来看，我们得出结论，在高SNR下，WSN的各个阶段可以用相对较大的距离隔开。
We consider comparison of Mutual Information (MI)-Energy tradeoff in correlated wireless sensor network (WSN) for cooperative multiple input and multiple output (MIMO) and non-cooperative (referred to as single input and single output (SISO)) transmission schemes. Our numerical results indicate that for short distances SISO schemes achieve better Mi-Energy tradeoff than the cooperative MIMO schemes, while for long distances the cooperative MIMO schemes achieve better Mi-Energy tradeoff. We next consider the issue of sensor placement in a correlated WSN. Specifically, we prove that the spacing between nodes to maximize MI is in general an increasing function of observation SNR. From this structural result, we conclude that at high SNR, the various stages of the WSN can be separated by relatively large distances than at low SNR.