Non-Orthogonal Multiple Access for Vehicular Communication

Abstract

In this paper, we establish a simple model for the exchange of messages in a vehicular network and we consider fundamental limits on the achievable data rate. For a vehicular network, the exchange of data with other nearby vehicles is particularly important for traffic safety, e.g. for collision avoidance, but also for cooperative applications like platooning. These use cases are currently addressed by standards building on IEEE 802.11p, namely ITS-G5 and DSRC (dedicated short range communication), which encounter saturation problems at high vehicle densities. For this reason, we take a step back and ask for the fundamental limits for the common data rate in a vehicular network. After defining a simple single-lane model and the corresponding capacity limits for some basic multipleaccess schemes, we present results for a more realistic setting. For both scenarios, non-orthogonal multiple-access (NOMA) yields the best results.

Performance Analysis of NOMA in Vehicular Communications Over i.n.i.d Nakagami-m Fading Channels

“…By substituting (32) into (17), the CDF of an ordered channel gain can be obtained. By applying the obtained CDF into (27), with the aid of [17], the outage probability in the high SNR regime ζ → ∞ so, φ mn → 0 can be written as:…”

“…A hierarchical power control algorithm has been proposed in [26] to optimize the power control and cell association jointly for the improvement of spectrum and energy efficiency in NOMA enabled vehicular small cell networks. In [27], the rate performance of NOMA has been compared with OMA for vehicular communications. The works mentioned in [24]- [27] have been carried out for a SISO antenna configuration.…”

“…In [27], the rate performance of NOMA has been compared with OMA for vehicular communications. The works mentioned in [24]- [27] have been carried out for a SISO antenna configuration.…”

Joint Resource Allocation and Power Control Based on Vehicle’s Motion Characteristics in NOMA-Based V2V Systems

“…erefore, it is suitable to apply NOMA in V2V communication system for its high spectrum utilization [8]. However, as far as authors know, there are few researches about applying NOMA in V2V communication [9][10][11].…”