Non-Orthogonal Multiple Access for Unicast and Multicast D2D: Channel Assignment, Power Allocation and Energy Efficiency
Non-orthogonal multiple access (NOMA) techniques have emerged in the past years as a solution to approximate the throughput performance of wireless communications systems to their theoretical capacity region. We consider in this paper an optimization-based model for multicast device-to-device (MD2D)...
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MDPI AG
2021-05-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/21/10/3436 |
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| author | Mariem Hmila Manuel Fernández-Veiga Miguel Rodríguez-Pérez Sergio Herrería-Alonso |
| author_facet | Mariem Hmila Manuel Fernández-Veiga Miguel Rodríguez-Pérez Sergio Herrería-Alonso |
| author_sort | Mariem Hmila |
| collection | DOAJ |
| description | Non-orthogonal multiple access (NOMA) techniques have emerged in the past years as a solution to approximate the throughput performance of wireless communications systems to their theoretical capacity region. We consider in this paper an optimization-based model for multicast device-to-device (MD2D) communications where the channels are not orthogonal and may be (partially or fully) shared among the transmitters in each cluster. This setting leads naturally to the introduction of NOMA transmitters and receivers who use successive interference cancellation (SIC) to separate the superposed signals. To analyze the role of NOMA in MD2D, its performance impact, potential performance gains and possible shortcomings, we formulate a model that includes SIC operations in the decoders, so that higher rates can be attained when several sources transmit on the same channel(s). We also investigate the energy efficiency of the network (global and max-min) through a dynamic power control algorithm and present a centralized and a semi-distributed solution to these optimization problems. Through numerical simulations, we show that NOMA is able to improve both the sum-rate and the max-min rate of a MD2D network even from a small degree of resource sharing. Furthermore, these gains also improve the global energy efficiency on the network, but not always the max-min energy efficiency of the devices. |
| first_indexed | 2024-03-10T11:24:24Z |
| format | Article |
| id | doaj.art-e97a03aa9b8044a19d65e56088ba244f |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T11:24:24Z |
| publishDate | 2021-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-e97a03aa9b8044a19d65e56088ba244f2023-11-21T19:48:41ZengMDPI AGSensors1424-82202021-05-012110343610.3390/s21103436Non-Orthogonal Multiple Access for Unicast and Multicast D2D: Channel Assignment, Power Allocation and Energy EfficiencyMariem Hmila0Manuel Fernández-Veiga1Miguel Rodríguez-Pérez2Sergio Herrería-Alonso3atlanTTic Laboratory, Faculty of Telecommunications Engineering, Universidade de Vigo, 36310 Vigo, SpainatlanTTic Laboratory, Faculty of Telecommunications Engineering, Universidade de Vigo, 36310 Vigo, SpainatlanTTic Laboratory, Faculty of Telecommunications Engineering, Universidade de Vigo, 36310 Vigo, SpainatlanTTic Laboratory, Faculty of Telecommunications Engineering, Universidade de Vigo, 36310 Vigo, SpainNon-orthogonal multiple access (NOMA) techniques have emerged in the past years as a solution to approximate the throughput performance of wireless communications systems to their theoretical capacity region. We consider in this paper an optimization-based model for multicast device-to-device (MD2D) communications where the channels are not orthogonal and may be (partially or fully) shared among the transmitters in each cluster. This setting leads naturally to the introduction of NOMA transmitters and receivers who use successive interference cancellation (SIC) to separate the superposed signals. To analyze the role of NOMA in MD2D, its performance impact, potential performance gains and possible shortcomings, we formulate a model that includes SIC operations in the decoders, so that higher rates can be attained when several sources transmit on the same channel(s). We also investigate the energy efficiency of the network (global and max-min) through a dynamic power control algorithm and present a centralized and a semi-distributed solution to these optimization problems. Through numerical simulations, we show that NOMA is able to improve both the sum-rate and the max-min rate of a MD2D network even from a small degree of resource sharing. Furthermore, these gains also improve the global energy efficiency on the network, but not always the max-min energy efficiency of the devices.https://www.mdpi.com/1424-8220/21/10/3436multicast device-to-device communication5G and beyondnon-orthogonal communications |
| spellingShingle | Mariem Hmila Manuel Fernández-Veiga Miguel Rodríguez-Pérez Sergio Herrería-Alonso Non-Orthogonal Multiple Access for Unicast and Multicast D2D: Channel Assignment, Power Allocation and Energy Efficiency Sensors multicast device-to-device communication 5G and beyond non-orthogonal communications |
| title | Non-Orthogonal Multiple Access for Unicast and Multicast D2D: Channel Assignment, Power Allocation and Energy Efficiency |
| title_full | Non-Orthogonal Multiple Access for Unicast and Multicast D2D: Channel Assignment, Power Allocation and Energy Efficiency |
| title_fullStr | Non-Orthogonal Multiple Access for Unicast and Multicast D2D: Channel Assignment, Power Allocation and Energy Efficiency |
| title_full_unstemmed | Non-Orthogonal Multiple Access for Unicast and Multicast D2D: Channel Assignment, Power Allocation and Energy Efficiency |
| title_short | Non-Orthogonal Multiple Access for Unicast and Multicast D2D: Channel Assignment, Power Allocation and Energy Efficiency |
| title_sort | non orthogonal multiple access for unicast and multicast d2d channel assignment power allocation and energy efficiency |
| topic | multicast device-to-device communication 5G and beyond non-orthogonal communications |
| url | https://www.mdpi.com/1424-8220/21/10/3436 |
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