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Physical-Layer Network Coding Scheme over Asymmetric Rayleigh Fading Two-Way Relay Channels

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Abstract

To improve the bit error rate (BER) performance of physical-layer network coding (PNC) in asymmetric two-way relay channels (TWRC), in this paper, we study a new PNC scheme named bi-quadrature physical-layer network coding (BQ-PNC) for Rayleigh flat fading TWRC. In BQ-PNC scheme, the two users employ quadrature carriers and the relay node use quadrature combining rather than XOR which is very common in other PNC schemes. We give the BER analysis of BQ-PNC and simulate the performance. Theoretical and simulation results show that the proposed scheme can significantly enhanced the BER performance, either in symmetric or asymmetric cases. Especially for uplink asymmetric TWRC, BQ-PNC can provide more than 4 dB gain compared with PNC scheme.

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Acknowledgment

The authors would like to thank the anonymous reviewers for their valuable comments and suggestions to improve the quality of the paper. This work is partly supported by National Natural Science Foundation of China under Grant No.61401118, 61371100 and 61671184, Natural Science Foundation of Shandong Province under Grant No.ZR2014FP016, the Research Funds for the Central Universities under Grant No.HIT.NSRIF.2016100 and HIT.NSRIF.201720, Subject Guide Foundation under Grant No.201509, and the Scientific Research Foundation of Harbin Institute of Technology at Weihai under Grant No.HIT(WH)201409 and HIT(WH)201410.

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Authors and Affiliations

  1. School of Information and Electrical Engineering, Harbin Institute of Technology (Weihai), Weihai, 264200, China

    Bo Li, Xuesong Ding, Hongjuan Yang, Gongliang Liu & Xiyuan Peng

  2. School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin, 150001, China

    Xiyuan Peng

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  1. Bo Li
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  2. Xuesong Ding
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  3. Hongjuan Yang
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  4. Gongliang Liu
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  5. Xiyuan Peng
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Correspondence to Hongjuan Yang.

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Li, B., Ding, X., Yang, H. et al. Physical-Layer Network Coding Scheme over Asymmetric Rayleigh Fading Two-Way Relay Channels. Mobile Netw Appl 23, 80–85 (2018). https://doi.org/10.1007/s11036-017-0884-z

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  • DOI: https://doi.org/10.1007/s11036-017-0884-z

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