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Full-Duplex Energy-Harvesting Relay Networks: Capacity-Maximizing Relay Selection

  • Research paper
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Journal of Communications and Information Networks

Abstract

In this study, we investigate the relay selection (RS) problem in full-duplex energy-harvesting (FDEH) relay networks, where the relays are wirelessly powered by harvesting a portion of the received signal power from the source. We extend the investigation of the relay selection problem in FDEH relay networks to enable multiple relays to be selected simultaneously for improved performance. This is in contrast with existing studies on RS in similar setups, where only one relay can be selected in a transmission cycle. Our simulations show that selecting only a single relay is not always optimal, especially at low signal-to-noise ratios (SNRs). Furthermore, in this paper, we present the design of a greedy RS method with quadratic complexity for FDEH relay networks. Compared with the exhaustive-search-based RS, the proposed greedy RS achieves near-optimum performance in terms of the end-to-end capacity with significantly reduced complexity.

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Authors and Affiliations

  1. Department of Electrical and Computer Engineering, Colorado State University, 1373 Campus Delivery, Fort Collins, CO, 80523, USA

    Dexin Wang, Rongqing Zhang & Liuqing Yang

  2. State Key Laboratory of Advanced Optical Communication Systems and Networks, School of Electronics Engineering and Computing Sciences, Peking University, Beijing, 100871, China

    Xiang Cheng

Authors
  1. Dexin Wang
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  2. Rongqing Zhang
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  3. Xiang Cheng
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  4. Liuqing Yang
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Corresponding author

Correspondence to Xiang Cheng.

Additional information

This work was supported by the National Natural Science Foundation of China (Nos. 61622101 and 61571020). The associate editor coordinating the review of this paper and approving it for publication was G. R. Ding.

Dexin Wang received his B.S. degree from Xi’an Jiaotong University, Xi’an, China, in 2010. He is pursuing his Ph.D. degree at Colorado State University, CO, USA. His current research interests include simultaneous wireless information and power transfer (SWIPT), energy harvesting relay networks, and fullduplex communications.

Rongqing Zhang received his B.S. and Ph.D. degrees from Peking University, Beijing, China, in 2009 and 2014, respectively. Since 2014, he has been a postdoctoral research fellow at Colorado State University, CO, USA. He has published two book chapters and more than 60 papers in refereed journals and conference proceedings. His current research interests include physical layer security, vehicular communications and networking, and electric vehicles. Dr. Zhang was the recipient of the Academic Award for Excellent Doctoral Students, Ministry of Education of China, the co-recipient of the First-Class Natural Science Award, Ministry of Education of China, and received the Best Paper Awards at IEEE ITST 2012 and ICC 2016. He was also awarded as International Presidential Fellow of Colorado State University in 2017.

Xiang Cheng [corresponding author] (S’05-M’10- SM’13) received his Ph.D. degree from Heriot-Watt University and the University of Edinburgh, Edinburgh, U.K., in 2009, where he received the Postgraduate Research Thesis Prize. He is currently a Professor at Peking University. His general research interests are in the areas of channel modeling and mobile communications, subjects on which he has published more than 160 journal and conference papers, 3 books, and 6 patents.

Dr. Cheng was the recipient of the IEEE Asia Pacific (AP) Outstanding Young Researcher Award in 2015, the co-recipient for the 2016 IEEE JSAC Best Paper Award: Leonard G. Abraham Prize, the NSFC Outstanding Young Investigator Award, the First-Rank and Second-Rand Awards in Natural Science, Ministry of Education in China, and received the Best Paper Awards at IEEE ITST’12, ICCC’13, ITSC’14, ICC’16, and ICNC’17. He has served as Symposium Leading- Chair, Co-Chair, and a Member of the Technical Program Committee for several international conferences. He is now an Associate Editor for IEEE Transactions on Intelligent Transportation Systems and Journal of Communications and Information Networks.

Liuqing Yang (S’02-M’04-SM’06-F’15) received her Ph.D. degree from the University of Minnesota, Minneapolis, MN, USA, in 2004. Her main research interests include communications and signal processing. Dr. Yang has been actively serving in the technical community, including the organization of many IEEE international conferences, and on the editorial boards of a number of journals, including the IEEE Transactions on Communications, the IEEE Transactions on Wireless Communications, the IEEE Transactions on Intelligent Transportation Systems, the IEEE Transactions on Signal Processing, and is currently serving as the EiC for IET Communications. She received the Office of Naval Research Young Investigator Program Award in 2007, the National Science Foundation Career Award in 2009, the IEEE GLOBECOM Outstanding Service Award in 2010, the George T. Abell Outstanding Mid-Career Faculty Award and the Art Corey Outstanding International Contributions Award at CSU in 2012 and 2016 respectively, and Best Paper Awards at IEEE ICUWB’06, ICCC’13, ITSC’14, GLOBECOM’14, ICC’16, and WCSP’16.

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Wang, D., Zhang, R., Cheng, X. et al. Full-Duplex Energy-Harvesting Relay Networks: Capacity-Maximizing Relay Selection. J. Commun. Inf. Netw. 3, 79–85 (2018). https://doi.org/10.1007/s41650-018-0027-0

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  • DOI: https://doi.org/10.1007/s41650-018-0027-0

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