A Novel Adaptive and Cooperative Scheme to Save Energy for Wireless Sensor Network
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A Novel Adaptive and Cooperative Scheme to Save Energy for Wireless Sensor Network Lamia Grira1,2 · Ridha Bouallegue2
© Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract In this paper, we evaluate the performance of a novel cooperative adaptive relaying scheme called ISDF (Incremental Selective Decode and Forward). We compare the energy efficiency of this underlying scheme with direct transmission (DT), Fixed and adaptive relaying schemes in Wireless Sensor Network (WSN). The system is constrained by a minimum value of Signal-to- Noise Ratio (SNR) and the end-to-end throughput. We consider a threenode cooperative system. The relay is equidistant to the source and destination, and then we study different positions of the latter. The destination receives two copies of the message: one from the source and the other from the relay. Then it combines them by using maximal ratio combining (MRC). The proposed scheme differs from other schemes by the combination of the selective decode and forward scheme with the incremental scheme which requires the presence of a feed-back from the destination. The analysis reveals that the proposed ISDF provides good energy efficiency compared to DT and other cooperative schemes. It also shows that DF cooperative scheme (decode and forward , either with feedback or no, is outperformed by AF (amplify and forward) scheme especially when the relay is placed near the destination. Keywords Cooperative schemes · ISDF · outage probability · Energy Consumption · Maximal ratio combining · WSN
1 Introduction Multiple antennas or space diversity techniques have attracted a lot of attention compared to time and frequency diversity techniques. We get a good performance gain by combining it with the two other diversity techniques [1]. This technique is very
* Lamia Grira [email protected] Ridha Bouallegue [email protected] 1
National Engineering School of Tunis, University of Tunis El Manar(UTM), Tunis, Tunisia
2
Higher School of Communication of Tunis (Sup’Com), Innov’COM Lab, University of Carthage, Tunis, Tunisia
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interesting for networks with power limited devices, where energy efficiency is a major concern as in the case of WSN. It enhances the energy efficiency of these networks. The majority of efficient communication techniques are interested in reducing transmission energy. In [2], it was confirmed that the transmit power outperforms the consumption of the Radio-Frequency (RF) circuits when the nodes are distant. But at a short-range distance, where the nodes are closer, the circuitry consumption becomes important. Furthermore, by using a suitable MAC protocol approche [3],we can save significantly the energy. As the nodes in WSN are limited in size, it is impractical to implement multiple antennas at one device to reach space diversity and then minimize the energy consumption. One of the most potential candidates that reduce significantly the transmit energy in WSN and exploits the space diver
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