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Verfasst von: | Liu, Fei |
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Petrova, Marina | |
Titel: | Dynamic Power Allocation for Downlink Multi-Carrier NOMA Systems |
Verlagsort: | New York |
Verlag: | IEEE |
The Institute of Electrical and Electronics Engineers, Inc. (IEEE) | |
Jahr: | 2018 |
Inhalt: | In this letter, the performance of optimal dynamic power allocation (PA) is analyzed for downlink multi-carrier non-orthogonal multiple access (MC-NOMA) systems. We study the PA optimization problem with a pair of users and weighted-sum-rate utility. A novel low-complexity algorithm is designed to solve the problem with a closed-form PA expression. The analytical data rate performance is derived and verified by simulation results. The numerical results indicate that a large difference in user channel states improves performance by enhancing the user diversity gain in NOMA systems. Moreover, the channel diversity gain can be achieved by multi-carrier transmission and increases with the number of subcarriers. Finally, the number of subcarriers for dynamic PA in MC-NOMA systems is discussed for practical applications. |
ISSN: | 1089-7798 |
1558-2558 | |
Titel Quelle: | IEEE communications letters |
Jahr Quelle: | 2018 |
Band/Heft Quelle: | 22, 9, S. 1930-1933 |
DOI: | doi:10.1109/LCOMM.2018.2852655 |
URL: | http://www.ub.uni-heidelberg.de/cgi-bin/edok?dok=https%3A%2F%2Ffanyv88.com%3A443%2Fhttps%2Fieeexplore.ieee.org%2Fdocument%2F8402201 |
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DOI: https://doi.org/10.1109/LCOMM.2018.2852655 | |
Sprache: | English |
Sach-SW: | Computer simulation |
Diversity methods | |
Downlink | |
Heuristic algorithms | |
multi-carrier transmission | |
NOMA | |
Non-orthogonal multiple access | |
Nonorthogonal multiple access | |
Optimization | |
performance analysis | |
Performance enhancement | |
power allocation | |
Power management | |
Resource management | |
Silicon carbide | |
Subcarriers | |
Verknüpfungen: | → Sammelwerk |