Outage Analysis of Multicarrier Full-Duplex Cooperative UAV-to-UAV Communications System

Direct and reliable communications between unmanned aerial vehicles (UAVs) facilitate various promising technologies such as UAV-aided relaying, collision avoidance in UAV swarms, and UAV-assisted multi-access edge computing. Moreover, UAVs can act as aerial base stations to provide inexpensive rural and remote coverage. This letter proposes a multicarrier full-duplex (FD) cooperative UAV-to-UAV (U2U) communications system wherein the UAV transmitter (UT) works as an FD relay for cellular uplink transmission. In return, a portion of cellular subcarriers is utilized by UT for its own transmission to the UAV receiver (UR). An analytical framework incorporating the conventional height-dependent three-dimensional (3-D) channel model characterized by a large-scale path loss and a small-scale fading is utilized to derive cellular and U2U outage probabilities. The results demonstrate that U2U communications with a substantial outage performance is feasible while maintaining a minimal cellular outage constraint. Specifically, the U2U outage probability of the order 10(-7) can be achieved while maintaining the cellular outage constraint of 10(-3).

Automated summary

This letter proposes a multicarrier full-duplex (FD) cooperative UAV-to-UAV (U2U) communications system, where the UAV transmitter (UT) works as an FD relay for cellular uplink transmission and utilizes a portion of cellular subcarriers for its own transmission to the UAV receiver (UR). An analytical framework is utilized to derive cellular and U2U outage probabilities, and the results show that U2U communications with a substantial outage performance is feasible while maintaining a minimal cellular outage constraint.