On the use of non-orthogonal multiple access for V2V message dissemination

• Published in: IET intelligent transport systems Vol. 13; no. 7; pp. 1125 - 1129
• Main Authors: Benabdallah, Fairouz, Hamza, Abdelkrim, Becherif, Mohamed
• Format: Journal Article
• Language: English
• Published: The Institution of Engineering and Technology 01.07.2019
• Subjects: 5G mobile communication; advanced receiver designs; channel capacity; channel effect; channel estimation; communication area; fading channels; interference suppression; log‐normal shadowing; multi‐access systems; network throughput; nonorthogonal multiple access technique; OMA‐based IEEE 802.11p standard; power control; power domain NOMA scheme; propagation channel; radio networks; radio receivers; radiofrequency interference; realistic channel model; reliable communication scheme; Research Article; spectral efficiency; system power control; telecommunication network reliability; user fairness; V2V message dissemination; vehicle‐to‐vehicle communication scheme; vehicular ad hoc networks; vehicular communication systems; vehicular networks; wireless channels; wireless LAN; vehicle-to-vehicle communication scheme; radio networks; channel effect; power domain NOMA scheme; channel capacity; network throughput; log-normal shadowing; radiofrequency interference; fading channels; vehicular communication systems; propagation channel; telecommunication network reliability; spectral efficiency; nonorthogonal multiple access technique; advanced receiver designs; multi-access systems; vehicular networks; wireless channels; vehicular ad hoc networks; interference suppression; 5G mobile communication; V2V message dissemination; realistic channel model; OMA-based IEEE 802.11p standard; communication area; radio receivers; channel estimation; system power control; user fairness; power control; wireless LAN; reliable communication scheme
• ISSN: 1751-956X; 1751-9578
• DOI: 10.1049/iet-its.2018.5378

Vehicular networks are characterised by a high density of nodes moving at a high speed and accessing the medium simultaneously which enlarges the interference, decreases the network throughput and spectral efficiency. That increases the challenge of designing a reliable communication scheme to handle the particular characteristics of this network and ensure user fairness. Here, a new vehicle-to-vehicle communication scheme is proposed. It consists of using particular vehicles (selected upon their position) to disseminate the message using non-orthogonal multiple access technique. Power domain NOMA allocates a great amount of power to the vehicle in poor conditions, which enhances the system power control; improve throughput and user fairness in comparison with the OMA-based IEEE 802.11p standard. A log-normal shadowing is considered to model the propagation channel. The simulation results show that considering a channel model where severe conditions of signal propagation are present, a more advanced receiver designs have to be proposed on the subject of channel estimation and equalisation to mitigate channel effect on the received data. However, even in a harsh fading environment, NOMA outperforms OMA in terms of network throughput, spectral efficiency, and user fairness, which makes it a very promising solution for future development of vehicular communication systems.