Experimental assessment of using network coding and cooperative diversity techniques in IEEE 802.15.4 wireless sensor networks

Odilson T. Valle, Gerson F. Budke, C. Montez, A. R. Pinto, F. Hernandez, F. Vasques, Fabian Vargas, E. Gatti
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引用次数: 5

Abstract

The use of wireless sensor networks (WSN) to support critical monitoring applications is becoming a relevant topic of interest. These networks allow a highly flexible approach to data monitoring and, consequently, a major breakthrough for several application domains, from industrial control applications to large building domotics and health care applications. One of the major impairments of using wireless networks to support critical monitoring applications is the electromagnetic noise, which may increase the packet loss ratio to unacceptable values. In this paper, we assess different techniques of cooperative communication and network coding that can be useful to mitigate the aforementioned problem. These techniques may be implemented in WSN nodes in conformance with the IEEE 802.15.4 standard, to reduce the impact of electromagnetic interferences upon the packet loss ratio. In this paper, we report an experimental assessment of the network coding and cooperative diversity techniques, where the network is subjected to a controlled electromagnetic interference inside of an anechoic chamber. The experimental results show that, by using these techniques, it is possible to increase the success rate of communication in typical electromagnetic noisy environments.
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IEEE 802.15.4无线传感器网络中使用网络编码和合作分集技术的实验评估
利用无线传感器网络(WSN)来支持关键的监控应用正在成为一个相关的话题。这些网络允许高度灵活的数据监测方法,因此,从工业控制应用到大型建筑家居和医疗保健应用等多个应用领域取得了重大突破。使用无线网络来支持关键监控应用的主要缺陷之一是电磁噪声,它可能使丢包率增加到不可接受的值。在本文中,我们评估了不同的协作通信和网络编码技术,可以有效地缓解上述问题。这些技术可以在符合IEEE 802.15.4标准的WSN节点中实现,以减少电磁干扰对丢包率的影响。在本文中,我们报告了网络编码和合作分集技术的实验评估,其中网络受到消声室内部的可控电磁干扰。实验结果表明,利用这些技术可以提高典型电磁噪声环境下的通信成功率。
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