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Decode-and-forward cooperative transmission in wireless sensor networks based on physical-layer network coding

  • Bo Li
  • Junyi Yang
  • Hongjuan YangEmail author
  • Gongliang Liu
  • Ruofei Ma
  • Xiyuan Peng
Article
  • 5 Downloads

Abstract

In order to tackle the problem of reducing the transmission delay of multi-data acquisition source nodes in wireless sensor networks, we propose a cooperative method based on decode-and-forward (DF) and physical-layer network coding. In this proposed method, the two source nodes simultaneously transmit the respective information to the relay node and the data sink node using the orthogonal carriers. The relay node demodulates the received information separately from two source nodes and employs quadrature phase shift keying to modulate these information before forwarding them. The data sink node decodes the information of two source nodes using log likelihood ratio based on the signals received from the direct link and the relay link. Simulation results of bit error rate and system throughput show that the cooperative method can effectively improve the performance of the cooperative system compared with the traditional DF.

Keywords

Decode-and-forward Physical-layer network coding Cooperative communication Throughput 

Notes

Acknowledgements

This work is supported in part by National Natural Science Foundation of China (Nos. 61671184, and 61801144), Natural Science Foundation of Shandong Province (Nos. ZR2018PF001 and ZR2014FP016), the Fundamental Research Funds for the Central Universities (Nos. HIT. NSRIF. 201720 and 2016100).

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Harbin Institute of Technology (Weihai)WeihaiChina
  2. 2.Auto Test and Control InstituteHarbin Institute of TechnologyHarbinChina

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