4 research outputs found
Performance Evaluation of Adaptive Cooperative NOMA Protocol at Road Junctions
Vehicular communications (VCs) protocols offer useful contributions in the
context of accident prevention thanks to the transmission of alert messages.
This is even truer at road intersections since these areas exhibit higher
collision risks and accidents rate. On the other hand, non-orthogonal multiple
access (NOMA) has been show to be a suitable candidate for five generation (5G)
of wireless systems. In this paper, we propose and evaluate the performance of
VCs protocol at road intersections, named adaptive cooperative NOMA (ACN)
protocol. The transmission occurs between a source and two destinations. The
transmission is subject to interference originated from vehicles located on the
roads. The positions of the interfering vehicles follow a Poison point process
(PPP). First, we calculate the outage probability related to ACN protocol, and
closed form expressions are obtained. Then we compare it with other existing
protocols in the literature. We show that ACN protocol offers a significant
improvement over the existing protocols in terms of outage probability,
especially at the intersection. We show that the performance of ACN protocol
increases compared to other existing protocols for high data rates. The
theoretical results are verified with Monte-Carlo simulations