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

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.

Application of Forward Error Correction (FEC) Codes in Wireless Acoustic Emission Structural Health Monitoring on Railway Infrastructures

“…The FEC consists of two types, the block code, and the convolutional code. Some of the most recognised block codes include the Hamming code, Golay code, Bose-Chadhuri-Hocquenghem code and Reed-Solomon (RS) code, as we can see in [24] and references therein. These codes are quite simple and have strong features with respect to burst error.…”

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“…Medium access control (MAC) protocol has been utilized by Kaur et al [29] to extend energy efficiency of a WSN node with solar energy harvesting. Forward error correction (FEC) scheme has been utilized by Gil et al [30] to increase the reliability of communication by optimally using harvested energy. It can also be addressed by having more compact integration of PV to IoT-WSN.…”