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Comparison of Limited Feedback Schemes for NOMA Transmission in mmWave Drone Networks. (arXiv:1803.04265v1 [cs.IT])
来源于:arXiv
Introducing non-orthogonal multiple access (NOMA) transmission to an unmanned
aerial vehicle (UAV) based communication network is a promising solution to
enhance its spectral efficiency. However, for realistic deployment of such a
network, identifying a practical user feedback scheme for NOMA is essential. In
this paper, considering two practical feedback schemes we introduce NOMA
transmission to UAVs acting as aerial base stations (BS) to provide coverage at
a large stadium. In particular, a UAV-BS generates directional beams, and
multiple users are served simultaneously within the same beam employing NOMA
transmission. Each user is considered to have a target rate based on its
quality of service (QoS) requirements. In order to relieve the burden of
tracking and feeding back full channel state information, we consider two
limited feedback schemes as practical alternatives: 1) user distance, and 2)
user angle with respect to beamforming direction under different user region
geometries. 查看全文>>