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Sensors 2016, 16(11), 1910; doi:10.3390/s16111910

Interference-Robust Transmission in Wireless Sensor Networks

Department of Electrical and Computer Engineering and INMC, Seoul National University, Seoul 151-742, Korea
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Author to whom correspondence should be addressed.
Academic Editor: Leonhard M. Reindl
Received: 19 August 2016 / Revised: 30 October 2016 / Accepted: 7 November 2016 / Published: 14 November 2016
(This article belongs to the Section Sensor Networks)
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Abstract

Low-power wireless sensor networks (WSNs) operating in unlicensed spectrum bands may seriously suffer from interference from other coexisting radio systems, such as IEEE 802.11 wireless local area networks. In this paper, we consider the improvement of the transmission performance of low-power WSNs by adjusting the transmission rate and the payload size in response to the change of co-channel interference. We estimate the probability of transmission failure and the data throughput and then determine the payload size to maximize the throughput performance. We investigate that the transmission time maximizing the normalized throughput is not much affected by the transmission rate, but rather by the interference condition. We adjust the transmission rate and the transmission time in response to the change of the channel and interference condition, respectively. Finally, we verify the performance of the proposed scheme by computer simulation. The simulation results show that the proposed scheme significantly improves data throughput compared with conventional schemes while preserving energy efficiency even in the presence of interference. View Full-Text
Keywords: co-channel interference; low-power wireless sensor network; transmission scheme co-channel interference; low-power wireless sensor network; transmission scheme
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Han, J.-S.; Lee, Y.-H. Interference-Robust Transmission in Wireless Sensor Networks. Sensors 2016, 16, 1910.

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