Non-orthogonal multiple access for unmanned aerial vehicle assisted communication
The future wireless networks promise to provide ubiquitous connectivity to a multitude of devices with diversified traffic patterns wherever and whenever needed. For the sake of boosting resilience against faults, natural disasters, and unexpected traffic, the unmanned aerial vehicle (UAV)-assisted...
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| Format: | Article |
| Language: | English |
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Institute of Electrical and Electronics Engineers Inc.
2018
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| Online Access: | http://eprints.utm.my/79763/1/MuhammadFarhanSohail2018_Non-OrthogonalMultipleAccessforUnmanned.pdf |
| _version_ | 1796863104857931776 |
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| author | Sohail, M. F. Leow, C. Y. Won, S. |
| author_facet | Sohail, M. F. Leow, C. Y. Won, S. |
| author_sort | Sohail, M. F. |
| collection | ePrints |
| description | The future wireless networks promise to provide ubiquitous connectivity to a multitude of devices with diversified traffic patterns wherever and whenever needed. For the sake of boosting resilience against faults, natural disasters, and unexpected traffic, the unmanned aerial vehicle (UAV)-assisted wireless communication systems can provide a unique opportunity to cater for such demands in a timely fashion without relying on the overly engineered cellular network. However, for UAV-assisted communication, issues of capacity, coverage, and energy efficiency are considered of paramount importance. The case of non-orthogonal multiple access (NOMA) is investigated for aerial base station (BS). NOMA's viability is established by formulating the sum-rate problem constituting a function of power allocation and UAV altitude. The optimization problem is constrained to meet individual user-rates arisen by orthogonal multiple access (OMA) bringing it at par with NOMA. The relationship between energy efficiency and altitude of a UAV inspires the solution to the aforementioned problem considering two cases, namely, altitude fixed NOMA and altitude optimized NOMA. The latter allows exploiting the extra degrees of freedom of UAV-BS mobility to enhance the spectral efficiency and the energy efficiency. Hence, it saves joules in the operational cost of the UAV. Finally, a constrained coverage expansion methodology, facilitated by NOMA user rate gain is also proposed. Results are presented for various environment settings to conclude NOMA manifesting better performance in terms of sum-rate, coverage, and energy efficiency. |
| first_indexed | 2024-03-05T20:21:42Z |
| format | Article |
| id | utm.eprints-79763 |
| institution | Universiti Teknologi Malaysia - ePrints |
| language | English |
| last_indexed | 2024-03-05T20:21:42Z |
| publishDate | 2018 |
| publisher | Institute of Electrical and Electronics Engineers Inc. |
| record_format | dspace |
| spelling | utm.eprints-797632019-01-28T06:50:26Z http://eprints.utm.my/79763/ Non-orthogonal multiple access for unmanned aerial vehicle assisted communication Sohail, M. F. Leow, C. Y. Won, S. TK Electrical engineering. Electronics Nuclear engineering The future wireless networks promise to provide ubiquitous connectivity to a multitude of devices with diversified traffic patterns wherever and whenever needed. For the sake of boosting resilience against faults, natural disasters, and unexpected traffic, the unmanned aerial vehicle (UAV)-assisted wireless communication systems can provide a unique opportunity to cater for such demands in a timely fashion without relying on the overly engineered cellular network. However, for UAV-assisted communication, issues of capacity, coverage, and energy efficiency are considered of paramount importance. The case of non-orthogonal multiple access (NOMA) is investigated for aerial base station (BS). NOMA's viability is established by formulating the sum-rate problem constituting a function of power allocation and UAV altitude. The optimization problem is constrained to meet individual user-rates arisen by orthogonal multiple access (OMA) bringing it at par with NOMA. The relationship between energy efficiency and altitude of a UAV inspires the solution to the aforementioned problem considering two cases, namely, altitude fixed NOMA and altitude optimized NOMA. The latter allows exploiting the extra degrees of freedom of UAV-BS mobility to enhance the spectral efficiency and the energy efficiency. Hence, it saves joules in the operational cost of the UAV. Finally, a constrained coverage expansion methodology, facilitated by NOMA user rate gain is also proposed. Results are presented for various environment settings to conclude NOMA manifesting better performance in terms of sum-rate, coverage, and energy efficiency. Institute of Electrical and Electronics Engineers Inc. 2018 Article PeerReviewed application/pdf en http://eprints.utm.my/79763/1/MuhammadFarhanSohail2018_Non-OrthogonalMultipleAccessforUnmanned.pdf Sohail, M. F. and Leow, C. Y. and Won, S. (2018) Non-orthogonal multiple access for unmanned aerial vehicle assisted communication. IEEE Access, 6 . pp. 22716-22727. ISSN 2169-3536 http://dx.doi.org/10.1109/ACCESS.2018.2826650 DOI:10.1109/ACCESS.2018.2826650 |
| spellingShingle | TK Electrical engineering. Electronics Nuclear engineering Sohail, M. F. Leow, C. Y. Won, S. Non-orthogonal multiple access for unmanned aerial vehicle assisted communication |
| title | Non-orthogonal multiple access for unmanned aerial vehicle assisted communication |
| title_full | Non-orthogonal multiple access for unmanned aerial vehicle assisted communication |
| title_fullStr | Non-orthogonal multiple access for unmanned aerial vehicle assisted communication |
| title_full_unstemmed | Non-orthogonal multiple access for unmanned aerial vehicle assisted communication |
| title_short | Non-orthogonal multiple access for unmanned aerial vehicle assisted communication |
| title_sort | non orthogonal multiple access for unmanned aerial vehicle assisted communication |
| topic | TK Electrical engineering. Electronics Nuclear engineering |
| url | http://eprints.utm.my/79763/1/MuhammadFarhanSohail2018_Non-OrthogonalMultipleAccessforUnmanned.pdf |
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