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Exploiting NOMA/OMA for Multi-UAV Communications in Large-Scale Networks. (arXiv:1902.01793v1 [cs.IT])
来源于:arXiv
This paper advocates a pair of strategies in non-orthogonal multiple access
(NOMA) in unmanned aerial vehicles (UAVs) communications, where multiple UAVs
play as new aerial communications platforms for serving terrestrial NOMA users.
A new multiple UAVs framework with invoking stochastic geometry technique is
proposed, in which a pair of practical strategies are considered: 1)
UAV-Centric strategy for offloading actions and 2) User-Centric strategy for
providing emergency communications. In order to provide practical insights for
the proposed NOMA assisted UAV framework, an imperfect successive interference
cancelation (ipSIC) scenario is taken into account. For both UAV-Centric
strategy and User-Centric strategy, we derive new exact expressions for the
coverage probability. We also derive new analytical results for orthogonal
multiple access (OMA) for providing a benchmark scheme. The derived analytical
results in both User-Centric strategy and UAV-Centric strategy explicitly
indicate 查看全文>>