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Rate-Splitting Non-orthogonal Multiple Access: Practical Design and Performance Optimization

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Abstract

In this paper we propose a novel rate-splitting non-orthogonal multiple access (RS-NOMA) scheme implemented in power-domain for practical scenarios in 5G mobile communication systems. The proposed scheme is exploited to solve the mismatch between Quality-of-Service (QoS) and channel conditions of users via rate-splitting instead of power reallocation as the conventional NOMA does. The RS-NOMA scheme contributes to both system spectrum efficiency and user flexibility on resource allocation. We investigate the signal-to-noise ratio (SNR) region division for the proposed scheme and then a splitting factor optimizing algorithm to enable the system achieving the maximum throughput. Simulation results show that the RS-NOMA scheme significantly improves the user flexibility with almost no loss to the system spectrum efficiency.

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Acknowledgment

This work is supported by National High Technology Research and Development Program of China (863 Program 2015AA01A709), and National Natural Science Foundation of China (61401037).

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Authors and Affiliations

  1. Key Laboratory of Universal Wireless Communications, Ministry of Education, Beijing University of Posts and Telecommunications, Beijing, 100876, China

    Xinrui Huang, Kai Niu, Zhongwei Si, Zhiqiang He & Chao Dong

Authors
  1. Xinrui Huang
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  2. Kai Niu
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  3. Zhongwei Si
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  4. Zhiqiang He
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  5. Chao Dong
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Corresponding author

Correspondence to Xinrui Huang .

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Editors and Affiliations

  1. Post and Telecommunications, Chongqing University, Chongqing, China

    Qianbin Chen

  2. Harbin Institute of Technology (HIT), Harbin, China

    Weixiao Meng

  3. Xidian University, Xi’an, China

    Liqiang Zhao

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© 2018 ICST Institute for Computer Sciences, Social Informatics and Telecommunications Engineering

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Huang, X., Niu, K., Si, Z., He, Z., Dong, C. (2018). Rate-Splitting Non-orthogonal Multiple Access: Practical Design and Performance Optimization. In: Chen, Q., Meng, W., Zhao, L. (eds) Communications and Networking. ChinaCom 2016. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 209. Springer, Cham. https://doi.org/10.1007/978-3-319-66625-9_34

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  • DOI: https://doi.org/10.1007/978-3-319-66625-9_34

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-66624-2

  • Online ISBN: 978-3-319-66625-9

  • eBook Packages: Computer ScienceComputer Science (R0)

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