Article (Scientific journals)
Multigroup Multicast Precoding for Energy Optimization in SWIPT Systems with Heterogeneous Users
Gautam, Sumit; Lagunas, Eva; Bandi, Ashok et al.
2019In IEEE Communications Society Magazine
Peer reviewed
 

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Keywords :
Simultaneous Wireless Information and Power Transmission (SWIPT),; multigroup multicast; precoding
Abstract :
[en] The key to developing future generations of wireless communication systems lies in the expansion of extant methodologies, which ensures the coexistence of a variety of devices within a system. In this paper, we assume several multicasting (MC) groups comprising three types of heterogeneous users including Information Decoding (ID), Energy Harvesting (EH) and both ID and EH. We present a novel framework to investigate the multi-group (MG) - MC precoder designs for three different scenarios, namely, Separate Multicast and Energy Precoding Design (SMEP), Joint Multicast and Energy Precoding Design (JMEP), and Per-User Information and/or Energy Precoding Design (PIEP). In the considered system, a multi-antenna source transmits the relevant information and/or energy to the groups of corresponding receivers using more than one MC streams. The data processing users employ the conventional ID receiver architectures, the EH users make use of a non-linear EH module for energy acquisition, while the users capable of performing both ID and EH utilize the separated architecture with disparate ID and non-linear EH units. Our contribution is threefold. Firstly, we propose an optimization framework to i) minimize the total transmit power and ii) to maximize the sum harvested energy, the two key performance metrics of MG-MC systems. The proposed framework allows the analysis of the system under arbitrary given quality of service and harvested energy requirements. Secondly, to deal with the non-convexity of the formulated problems, we transform the original problems respectively into equivalent forms, which can be effectively solved by semi-definite relaxation (SDR) and alternating optimization. The convergence of the proposed algorithms is analytically guaranteed. Thirdly, a comparative study between the proposed schemes is conducted via extensive numerical results, wherein the benefits of adopting SMEP over JMEP and PIEP models are discussed
Research center :
Interdisciplinary Centre for Security, Reliability and Trust (SnT) > SIGCOM
Disciplines :
Electrical & electronics engineering
Author, co-author :
Gautam, Sumit ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
Lagunas, Eva  ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
Bandi, Ashok ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
Chatzinotas, Symeon  ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
Sharma, Shree Krishna ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
Vu, Thang Xuan  ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
Kisseleff, Steven ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
Ottersten, Björn ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
External co-authors :
no
Language :
English
Title :
Multigroup Multicast Precoding for Energy Optimization in SWIPT Systems with Heterogeneous Users
Publication date :
December 2019
Journal title :
IEEE Communications Society Magazine
ISSN :
0148-9615
Publisher :
IEEE
Special issue title :
IEEE Open Journal of the Communications Society
Peer reviewed :
Peer reviewed
Focus Area :
Security, Reliability and Trust
FnR Project :
FNR11037543 - Integrated Wireless Information And Power Networks, 2015 (01/10/2016-30/09/2020) - Bjorn Ottersten
Name of the research project :
InWIP-NET: Integrated Wireless Information and Power Networks (R-AGR-0700-10-V)
Funders :
Luxembourg National Research Fund (FNR), Luxembourg, under the FNRFNRS bilateral - InWIP-NET: Integrated Wireless Information and Power Networks (R-AGR-0700-10-V)
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since 26 January 2020

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