Energy Efficient Cooperative Communications in Aggregated VLC/RF Networks with NOMA

Rallis KG, Papanikolaou V, Diamantoulakis PD, Tegos SA, Dowhuszko AA, Khalighi MA, Karagiannidis GK (2023)

Publication Type: Journal article

Publication year: 2023

Journal

IEEE Transactions on Communications Institute of Electrical and Electronics Engineers (IEEE)

Pages Range: 1-1

DOI: 10.1109/TCOMM.2023.3292486

Abstract

Optimizing the energy efficiency (EE) of wireless networks is one of the key priorities in the design of beyond 5G mobile technologies. In this pursuit, the use of new frequency bands, in combination with advanced multiple access protocols and cooperative communications strategies, has recently shown promising results. To this end, this paper investigates an indoor wireless network that aggregates communication resources in visible light and radio-frequency (RF) bands, taking advantage of the complementary aspects of the two technologies. More specifically, a non-orthogonal multiple access (NOMA) scheme is introduced for the visible light communication (VLC) downlink, such that cell-edge users experiencing a weak VLC signal enhance their aggregated data rate with the aid of cooperative communications over RF sidelinks (i.e., device-to-device links). The optimal resource allocation strategy over both VLC and RF bands is derived aiming at EE maximization based on the Dinkelbach’s algorithm and successive convex approximation. Additionally, for the sake of flexibility, a weighted EE metric is proposed for the characterization of the aggregated VLC/RF network performance. Simulation results are provided to validate the proposed analysis, revealing the impact of various design and system parameters, such as the weighting factors, quality of service requirements, and channel conditions.

Authors with CRIS profile

Vasileios Papanikolaou Lehrstuhl für Digitale Übertragung (IDC)

Involved external institutions

Aristotle University of Thessaloniki GR Greece (GR) University of Macedonia / Πανεπιστήμιο Μακεδονίας GR Greece (GR) Aalto University Espoo FI Finland (FI) Aix-Marseille University / Aix-Marseille Université FR France (FR)

How to cite

APA:

Rallis, K.G., Papanikolaou, V., Diamantoulakis, P.D., Tegos, S.A., Dowhuszko, A.A., Khalighi, M.A., & Karagiannidis, G.K. (2023). Energy Efficient Cooperative Communications in Aggregated VLC/RF Networks with NOMA. IEEE Transactions on Communications, 1-1. https://doi.org/10.1109/TCOMM.2023.3292486

MLA:

Rallis, Konstantinos G., et al. "Energy Efficient Cooperative Communications in Aggregated VLC/RF Networks with NOMA." IEEE Transactions on Communications (2023): 1-1.

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