Energy-Efficient Solutions in Two-user Downlink NOMA Systems Aided by Ambient Backscattering
| Autor: | El Hassani, Hajar, Savard, Anne, Belmega, Elena Veronica, Lamare, Rodrigo C. De |
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| Přispěvatelé: | El Hassani, Hajar, APPEL À PROJETS GÉNÉRIQUE 2018 - Technologies Emergentes pour l'Internet des Objets - - ELIOT2018 - ANR-18-CE40-0030 - AAPG2018 - VALID, Equipes Traitement de l'Information et Systèmes (ETIS - UMR 8051), Ecole Nationale Supérieure de l'Electronique et de ses Applications (ENSEA)-Centre National de la Recherche Scientifique (CNRS)-CY Cergy Paris Université (CY), Ecole nationale supérieure Mines-Télécom Lille Douai (IMT Nord Europe), Institut Mines-Télécom [Paris] (IMT), Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 (IEMN), Centrale Lille-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF)-JUNIA (JUNIA), Université catholique de Lille (UCL)-Université catholique de Lille (UCL), Circuits Systèmes Applications des Micro-ondes - IEMN (CSAM - IEMN ), Université catholique de Lille (UCL)-Université catholique de Lille (UCL)-Centrale Lille-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF)-JUNIA (JUNIA), Laboratoire d'Informatique Gaspard-Monge (LIGM), École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS)-Université Gustave Eiffel, ELIOT - ANR-18-CE40-0030, ANR-18-CE40-0030,ELIOT,Technologies Emergentes pour l'Internet des Objets(2018) |
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | IEEE Global Communications Conference (GLOBECOM) IEEE Global Communications Conference (GLOBECOM), Dec 2022, Rio de Janeiro, Brazil |
| Popis: | International audience; In this paper, the energy efficiency of a two-user downlink NOMA system aided by several ambient backscatter devices is investigated. We analyze both the tradeoff and the ratio between achievable rates versus power consumption, assuming that the backscatter devices are in fully cooperative mode. In the case of two backscatter devices, we derive a closedform solution in terms of the optimal reflection coefficients and power allocation policy by exploiting the properties of the energy-efficiency objective and the Pareto boundary of the feasible set. For more than two backscatter devices, the problem becomes difficult and our methodology cannot be extended easily. Nevertheless, we evaluate the performance of NOMA aided by several (up to four) backscatter devices via numerical simulations. Our numerical results show that the energy efficiency of the twouser NOMA system increases with the number of cooperative backscatter devices. Moreover, in the high noise regime, the relative efficiency gain increases with the number of backscatter devices reaching up to 370 % compared to conventional NOMA. |
| Databáze: | OpenAIRE |
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