Optimal resource allocation for NOMA wireless networks
The non-orthogonal multiple access (NOMA) method is a novel multiple access technique that aims to increase spectral efficiency (SE) and accommodate enormous user accesses. Multi-user signals are superimposed and transmitted in the power domain at the transmitting end by actively implementing contro...
| Main Authors: | , , , , |
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| Format: | Article |
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Tech Science Press
2022
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| Online Access: | http://psasir.upm.edu.my/id/eprint/102398/ |
| _version_ | 1848863793206001664 |
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| author | Albogamy, Fahad R. Aiyashi, M. A. Hashim, Fazirul Hisyam Imran Khan Choi, Bong Jun |
| author_facet | Albogamy, Fahad R. Aiyashi, M. A. Hashim, Fazirul Hisyam Imran Khan Choi, Bong Jun |
| author_sort | Albogamy, Fahad R. |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | The non-orthogonal multiple access (NOMA) method is a novel multiple access technique that aims to increase spectral efficiency (SE) and accommodate enormous user accesses. Multi-user signals are superimposed and transmitted in the power domain at the transmitting end by actively implementing controllable interference information, and multi-user detection algorithms, such as successive interference cancellation (SIC), are performed at the receiving end to demodulate the necessary user signals. Although its basic signal waveform, like LTE baseline, could be based on orthogonal frequency division multiple access (OFDMA) or discrete Fourier transform (DFT)-spread OFDM, NOMA superimposes numerous users in the power domain. In contrast to the orthogonal transmission method, the non-orthogonal method can achieve higher spectrum utilization. However, it will increase the complexity of its receiver. Different power allocation techniques will have a direct impact on the system’s throughput. As a result, in order to boost the system capacity, an efficient power allocation mechanism must be investigated. This research developed an efficient technique based on conjugate gradient to solve the problem of downlink power distribution. The major goal is to maximize the users’ maximum weighted sum rate. The suggested algorithm’s most notable feature is that it converges to the global optimal solution. When compared to existing methods, simulation results reveal that the suggested technique has a better power allocation capability. |
| first_indexed | 2025-11-15T13:38:34Z |
| format | Article |
| id | upm-102398 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-15T13:38:34Z |
| publishDate | 2022 |
| publisher | Tech Science Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-1023982023-05-18T03:21:24Z http://psasir.upm.edu.my/id/eprint/102398/ Optimal resource allocation for NOMA wireless networks Albogamy, Fahad R. Aiyashi, M. A. Hashim, Fazirul Hisyam Imran Khan Choi, Bong Jun The non-orthogonal multiple access (NOMA) method is a novel multiple access technique that aims to increase spectral efficiency (SE) and accommodate enormous user accesses. Multi-user signals are superimposed and transmitted in the power domain at the transmitting end by actively implementing controllable interference information, and multi-user detection algorithms, such as successive interference cancellation (SIC), are performed at the receiving end to demodulate the necessary user signals. Although its basic signal waveform, like LTE baseline, could be based on orthogonal frequency division multiple access (OFDMA) or discrete Fourier transform (DFT)-spread OFDM, NOMA superimposes numerous users in the power domain. In contrast to the orthogonal transmission method, the non-orthogonal method can achieve higher spectrum utilization. However, it will increase the complexity of its receiver. Different power allocation techniques will have a direct impact on the system’s throughput. As a result, in order to boost the system capacity, an efficient power allocation mechanism must be investigated. This research developed an efficient technique based on conjugate gradient to solve the problem of downlink power distribution. The major goal is to maximize the users’ maximum weighted sum rate. The suggested algorithm’s most notable feature is that it converges to the global optimal solution. When compared to existing methods, simulation results reveal that the suggested technique has a better power allocation capability. Tech Science Press 2022-10-31 Article PeerReviewed Albogamy, Fahad R. and Aiyashi, M. A. and Hashim, Fazirul Hisyam and Imran Khan and Choi, Bong Jun (2022) Optimal resource allocation for NOMA wireless networks. Computers, Materials & Continua, 74 (2). 3249 - 3261. ISSN 1546-2218; ESSN: 1546-2226 https://www.techscience.com/cmc/v74n2/50232 10.32604/cmc.2023.031673 |
| spellingShingle | Albogamy, Fahad R. Aiyashi, M. A. Hashim, Fazirul Hisyam Imran Khan Choi, Bong Jun Optimal resource allocation for NOMA wireless networks |
| title | Optimal resource allocation for NOMA wireless networks |
| title_full | Optimal resource allocation for NOMA wireless networks |
| title_fullStr | Optimal resource allocation for NOMA wireless networks |
| title_full_unstemmed | Optimal resource allocation for NOMA wireless networks |
| title_short | Optimal resource allocation for NOMA wireless networks |
| title_sort | optimal resource allocation for noma wireless networks |
| url | http://psasir.upm.edu.my/id/eprint/102398/ http://psasir.upm.edu.my/id/eprint/102398/ http://psasir.upm.edu.my/id/eprint/102398/ |