Uplink NOMA Random Access for UAV-Assisted Communications
- Title
- Uplink NOMA Random Access for UAV-Assisted Communications
- Author
- Hu Jin
- Keywords
- Non-orthogonal multiple access; unmanned aerial vehicle; stability
- Issue Date
- 2019-08
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Citation
- IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, v. 68, No. 8, Page. 8289-8293
- Abstract
- This correspondence paper investigates uplink nonorthogonal multiple access (NOMA) for unmanned aerial vehicle base stations (UAV-BSs). Users under the service area of a UAV-BS perform NOMA random access (RA) by controlling their transmit power so that the UAV-BS can receive one of two predefined power levels. This facilitates successive interference cancellation (SIC) at the UAV-BS. This correspondence paper shows the maximum stable throughput of uplink NOMA RA in terms of the altitude and beam width of the UAV-BS. Further, we propose a stabilizing algorithm, with which a UAV-BS broadcasts the throughput-maximal retransmission probability every slot, while users access the channel based on the retransmission probability. Extensive simulations show that the proposed algorithm can achieve the maximum throughput 0.5869 (packets/slot) and stabilize the system with time-varying traffic.
- URI
- https://ieeexplore.ieee.org/document/8737946https://repository.hanyang.ac.kr/handle/20.500.11754/117857
- ISSN
- 0018-9545; 1939-9359
- DOI
- 10.1109/TVT.2019.2923441
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > ELECTRICAL ENGINEERING(전자공학부) > Articles
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