Reference : Resource Allocation and Relay Selection for Multi-User OFDM-Based Cooperative Network...
Scientific congresses, symposiums and conference proceedings : Unpublished conference
Engineering, computing & technology : Electrical & electronics engineering
Security, Reliability and Trust
http://hdl.handle.net/10993/36016
Resource Allocation and Relay Selection for Multi-User OFDM-Based Cooperative Networks with SWIPT
English
Gautam, Sumit mailto [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > >]
Lagunas, Eva mailto [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > >]
Chatzinotas, Symeon mailto [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > >]
Ottersten, Björn mailto [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > >]
Aug-2018
6
Yes
International
IEEE 15th Int. Symp. on Wireless Comm. Systems 2018 (ISWCS’18), Lisbon, Portugal
from 28-08-2018 to 31-08-2018
[en] Simultaneous wireless transmission of information and energy ; Relay Selection ; Resource Allocation
[en] In this paper, we investigate resource allocation and relay selection in a two-hop relay-assisted multi-user network, where the end users support Simultaneous Wireless Information and Power Transfer (SWIPT). In particular, we consider single source assisted by a set of spatially distributed relays able to amplify-and-forward orthogonal frequency division multiplexing (OFDM) signals carrying both data and power at the same time. The users are assumed to implement a power splitting technique where the received signal is orthogonally split in two streams of different power levels, where one signal stream is sent to the power harvesting module while the other is converted to baseband for information decoding. We aim at optimizing the users’ power splitting ratios as well as the relay, carrier and power assignment so that the end-users’ sum-rate is maximized subject to transmitted and harvested power constraints. Such joint optimization is combinatorial in nature with a non-convex structure. Therefore, we present a sub-optimal low complex solution based on the harmonic mean of the two-hop relay channel coefficients. Simulation results reveal that the proposed algorithm provides significant performance gains in comparison with a semi-random resource allocation and relay selection approach.
Interdisciplinary Centre for Security, Reliability and Trust (SnT) > SIGCOM
InWIP-NET
http://hdl.handle.net/10993/36016

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ISWCS_2018_Orbi.pdf@INPROCEEDINGS{Gaut1808:Resource, AUTHOR={Sumit Gautam and Eva Lagunas and Symeon Chatzinotas and Bj{\"o}rn Ottersten}, TITLE="Resource Allocation and Relay Selection for {Multi-User} {OFDM-Based} Cooperative Networks with {SWIPT}", BOOKTITLE="2018 15th International Symposium on Wireless Communication Systems (ISWCS) (ISWCS 2018)", ADDRESS="Lisbon, Portugal", MONTH=Aug, YEAR=2018, KEYWORDS="Simultaneous Wireless Information and Power Transfer (SWIPT); Relay Selection; Resource Allocation; Orthogonal Frequency Division Multiplexing (OFDM)", }Publisher postprint552.35 kBView/Open

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