Full-Duplex SWIPT Relaying Based on Spatial-Modulation

Weilin Qu, Xiang Cheng, Chen Chen, Liuqing Yang

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

In this paper, we investigate the application of spatial-modulation (SM) in multi-antenna full-duplex (FD) decode-and-forward (DF) relay networks with simultaneous wireless information and power transfer (SWIPT). Both the time switching (TS) and power splitting (PS) protocols are employed. In the proposed scheme, a subset of relay antennas are selected to forward the received information signal with the harvested energy and the remaining inactive antennas receive the energy signal/information signal from the source node. The application of SM at the relay node leads to the throughput improvement of the relay-to-destination link because of the additional information mapped to the active antenna indices, which consequently leads to the overall system throughput improvement. According to the proposed tight SM mutual information (MI) upper bound, we provide a theoretical solution for the system throughput optimization. Monte-Carlo simulations verify the significant throughput gain facilitated by SM as well as the validity of the throughput optimization.

Original languageEnglish (US)
Article number8736720
Pages (from-to)1012-1022
Number of pages11
JournalIEEE Transactions on Green Communications and Networking
Volume3
Issue number4
DOIs
StatePublished - Dec 2019
Externally publishedYes

Bibliographical note

Funding Information:
Manuscript received August 5, 2018; revised December 17, 2018 and April 15, 2019; accepted June 4, 2019. Date of publication June 14, 2019; date of current version November 20, 2019. This work was supported in part by the Ministry National Key Research and Development Project under Grant 2017YFE0121400, in part by the Open Research Fund of Key Laboratory of Wireless Sensor Network and Communication under Grant 2017003, in part by the Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, in part by the National Science and Technology Major Project under Grant 2018ZX03001031, in part by the Major Project From Beijing Municipal Science and Technology Commission under Grant Z181100003218007, and in part by the National Natural Science Foundation of China under Grant 61622101 and Grant 61571020. The associate editor coordinating the review of this paper and approving it for publication was E. Ayanoglu. (Corresponding author: Xiang Cheng.) W. Qu and X. Cheng are with the State Key Laboratory of Advanced Optical Communication Systems and Network, Department of Electronics, School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China, and also with the Key Laboratory of Wireless Sensor Network and Communication, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China (e-mail: weilin.qu@pku.edu.cn; xiangcheng@pku.edu.cn).

Publisher Copyright:
© 2017 IEEE.

Keywords

  • Spatial-modulation (SM)
  • full-duplex (FD) relay
  • simultaneous wireless information and power transfer (SWIPT)
  • throughput optimization

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