Open Access

ARTICLE

Cooperative Relay Networks Based on the OAM Technique for 5G Applications

Mohammad Alkhawatrah, Ahmad Alamayreh, Nidal Qasem^*

Department of Electronics and Communications Engineering, Al-Ahliyya Amman University, Amman, Jordan

* Corresponding Author: Nidal Qasem. Email:

Computer Systems Science and Engineering 2023, 44(3), 1911-1919. https://doi.org/10.32604/csse.2023.028614

Received 14 February 2022; Accepted 17 March 2022; Issue published 01 August 2022

Abstract

Orbital Angular Momentum (OAM) is an intrinsic property of electromagnetic waves. Great research has been witnessed in the last decades aiming at exploiting the OAM wave property in different areas in radio and optics. One promising area of particular interest is to enhance the efficiency of the available communications spectrum. However, adopting OAM-based solutions is not priceless as these suffer from wave divergence especially when the OAM order is high. This shall limit the practical communications distance, especially in the radio regime. In this paper, we propose a cooperative OAM relaying system consisting of a source, relay, and destination. Relays help the source to transmit packets to the destination by providing an alternative connection between source and destination. This cooperative solution aims on the one hand, through best-path selection, on increasing the communications range. On the other hand, through the parallel transmission orders allowed by OAM carrying waves, the system could raise its total transmission throughput. Simulation results show that combining a cooperative relay with OAM improves the system throughput compared to using each element separately. In addition, the proposed cooperative relaying OAM outperforms the cooperative relaying non-orthogonal multiple access scheme, which is a key spectrally efficient technique used in 5G technology.

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Keywords

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