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arXiv 1605.03316cs.ITmath.IT
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能量收集无线传感器网络中的分散假设检验

Decentralized Hypothesis Testing in Energy Harvesting Wireless Sensor Networks

Alla Tarighati, James Gross, Joakim Jalden

摘要:

我们考虑在能量收集传感器网络中的分散式假设检验问题,其中传感器对现象进行噪声观测,并将有关该现象的量化信息发送到融合中心。融合中心使用在时间间隔期间的聚合接收数据做出关于当前假设的决定。我们明确地考虑一种情况下,通过并行访问通道向融合中心发送的消息。为了避免有限的寿命问题,我们假设每个传感器都能够从环境中收集通信所需的所有能量。每个传感器都有一个能量缓冲器(电池),以保存其收集的能量,供其他时间间隔使用。我们的主要贡献是制定在传感器网络与能量收集设备的分散检测的问题。我们的分析是基于电池的能量理论模型,我们提出了一个传感器的决策设计方法,考虑在传感器的长期能源管理。我们展示了系统的性能如何针对不同的电池容量而变化。然后,我们用数值方法展示了我们的研究结果如何用于设计具有能量收集传感器的传感器网络。

英文摘要:

We consider the problem of decentralized hypothesis testing in a network of energy harvesting sensors, where sensors make noisy observations of a phenomenon and send quantized information about the phenomenon towards a fusion center. The fusion center makes a decision about the present hypothesis using the aggregate received data during a time interval. We explicitly consider a scenario under which the messages are sent through parallel access channels towards the fusion center. To avoid limited lifetime issues, we assume each sensor is capable of harvesting all the energy it needs for the communication from the environment. Each sensor has an energy buffer (battery) to save its harvested energy for use in other time intervals. Our key contribution is to formulate the problem of decentralized detection in a sensor network with energy harvesting devices. Our analysis is based on a queuing-theoretic model for the battery and we propose a sensor decision design method by considering long term energy management at the sensors. We show how the performance of the system changes for different battery capacities. We then numerically show how our findings can be used in the design of sensor networks with energy harvesting sensors.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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