| |
| Verfasst von: | Liu, Fei |
|---|---|
| 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 |
| http://www.ub.uni-heidelberg.de/cgi-bin/edok?dok=https%3A%2F%2Ffanyv88.com%3A443%2Fhttps%2Fwww.proquest.com%2Fdocview%2F2117160064%2Fabstract%2F | |
| http://www.ub.uni-heidelberg.de/cgi-bin/edok?dok=https%3A%2F%2Ffanyv88.com%3A443%2Fhttps%2Furn.kb.se%2Fresolve%3Furn%3Durn%3Anbn%3Ase%3Akth%3Adiva-2 ... | |
| 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 |
Zurück zur Trefferübersicht und Suche
