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Optimal Coherent Combining Scheme for Relay Networks

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Abstract

To achieve more reliable performance at relay networks, an optimal coherent combining scheme, called maximum rate (Max-Rate), is proposed. By making use of skills in convex optimization and matrix theory, we derive the closed-form expression for the proposed Max-Rate. From simulation results, it follows that the proposed optimal combining scheme achieves substantial signal-to-noise ratio gains over existing schemes such as distributed space-time block coding, maximum ratio combining and their combination for a given symbol error rate.

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Acknowledgments

This work was supported in part by the open research fund of National Mobile Communications Research Laboratory, Southeast University (No. 2013D02), the open research fund of National Key Laboratory of Electromagnetic Environment, National Key Laboratory of Electromagnetic Environment (No. 201500013), the Fundamental Research Funds for the Central Universities (No. 30920130122004),  the Jiangsu Provincial Science Foundation Project (BK20150786), and the National Natural Science Foundation of China (Nos. 61271230, 61472190, and 61501238).

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Authors and Affiliations

  1. School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China

    Jin Wang, Feng Shu, Xiaohui Huang & Yimeng Wang

  2. National Key Laboratory of Electromagnetic Environment, China Research Institute of Radiowave Propagation, Qingdao, 266107, China

    Feng Shu

  3. College of Computer and Information Sciences, Fujian Agriculture and Forestry University, Fuzhou, 35002, China

    Feng Shu

Authors
  1. Jin Wang
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  2. Feng Shu
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  3. Xiaohui Huang
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  4. Yimeng Wang
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Correspondence to Feng Shu.

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Wang, J., Shu, F., Huang, X. et al. Optimal Coherent Combining Scheme for Relay Networks. Wireless Pers Commun 88, 575–585 (2016). https://doi.org/10.1007/s11277-016-3179-y

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  • DOI: https://doi.org/10.1007/s11277-016-3179-y

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