Efficient FEC Scheme for Solar-Powered WSNs Considering Energy and Link-Quality

Gun Wook Gil, Minjae Kang, Younghyun Kim, Ikjune Yoon and Dong Kun Noh
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Gun Wook Gil: Department of Software Convergence, Soongsil University, Seoul 06978, Korea
Minjae Kang: Department of Electronic Engineering, Soongsil University, Seoul 06978, Korea
Younghyun Kim: Department of Electrical and Computer Engineering, University of Wisconsin, Madison, WI 53706, USA
Ikjune Yoon: Department of Smart Systems Software, Soongsil University, Seoul 06978, Korea
Dong Kun Noh: Department of Software Convergence, Soongsil University, Seoul 06978, Korea

Energies, 2020, vol. 13, issue 15, 1-20

Abstract: In solar-powered wireless sensor networks (SP-WSNs), the best use of harvested energy is more important than minimizing energy consumption since energy can be supplied periodically. Meanwhile, as is well known, the reliability of the communication between sensor nodes is very limited due to the resource constraints of sensor nodes. In this paper, we propose an efficient forward error correction (FEC) scheme which can give solar-powered wireless sensor networks more reliable communication. First, the proposed scheme provides energy-adaptive operation for the best use of solar energy. It calculates the amount of surplus energy which can be used for extra operations and then determines the number of additional parity bits for FEC according to this amount of surplus energy. At the same time, it also provides a link quality model that is used to calculate the appropriate number of parity bits for error recovery required for the current data communication environment. Finally, by considering these two parity sizes, it is possible to determine the number of parity bits that can maximize the data reliability without affecting the blacking out of nodes. The evaluation of the performance of the approach was performed by comparing the amount of data collected at the sink node and the number of blackout nodes with other schemes.

Keywords: wireless sensor network; energy-harvesting; solar-powered; forward error correction; link-quality (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
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