The Energy-per-Useful-Bit Metric for Evaluating and Optimizing Sensor Network Physical Layers
The Energy-per-Useful-Bit Metric for Evaluating and Optimizing Sensor Network Physical Layers
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DOI：
10.1109/sahcn.2006.288533
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
J. Ammer;J. Rabaey
中科院分区：
文献类型：
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作者：
J. Ammer;J. Rabaey
为了实现真正的无处不在，传感器网络节点必须实现超低功耗。提出了一种用于评估和比较传感器网络物理层的能量单位有效比特（EPUB）度量。EPUB包括发送器和接收器两者的能量消耗，并且将同步前导期间的能量消耗分摊到分组中的数据比特的数量上。利用EPUB对现有的六种传感器网络物理层进行了比较，并根据EPUB对物理层进行了优化。通过提高数据传输速率、降低载波频率以及采用简单的调制方式（如OOK）来降低同步开销，可以降低传感器网络物理层的EPUB
To become truly ubiquitous, sensor network nodes must achieve ultra low power consumption. This paper proposes the energy-per-useful-bit (EPUB) metric for evaluating and comparing sensor network physical layers. EPUB includes the energy consumption of both the transmitter and receiver, and amortizes the energy consumption during the synchronization preamble over the number of data bits in the packet. Using EPUB, we compare six existing sensor network PHYs. Next, we optimize the PHY according to EPUB. We conclude that the EPUB of sensor network PHYs can be reduced by increasing data rate, lowering carrier frequency, and using simple modulation schemes such as OOK to reduce synchronization overhead