Outage analysis and optimisation of NOMA‐based amplify‐and‐forward relay systems
Abstract In this study, a non‐orthogonal multiple access based cooperative relay system is investigated, where the source serves multiple destinations via an amplify‐and‐forward relay. Direct links between the source and destinations are considered to form a general framework while the maximum ratio...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2021-02-01
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| Series: | IET Communications |
| Online Access: | https://doi.org/10.1049/cmu2.12074 |
| _version_ | 1797994943660163072 |
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| author | Guocheng Lv Xunan Li Ping Xue Ye Jin |
| author_facet | Guocheng Lv Xunan Li Ping Xue Ye Jin |
| author_sort | Guocheng Lv |
| collection | DOAJ |
| description | Abstract In this study, a non‐orthogonal multiple access based cooperative relay system is investigated, where the source serves multiple destinations via an amplify‐and‐forward relay. Direct links between the source and destinations are considered to form a general framework while the maximum ratio combination (MRC) is applied to obtain the largest decoding signal‐to‐interference‐plus‐noise ratio (SINR). Firstly, the outage performance is analysed with given successive interference cancellation (SIC) order and power allocation. An excellent approximated expression for the exact outage probabilities is derived in closed form. In addition, the asymptotic expression at high signal‐to‐noise ratio is provided to gain further insights. Then, in order to fully exploit the potential of the system, a joint optimisation of SIC order design and power allocation is formulated, with the objective of minimising the maximum outage probability of all destinations. By exploring the inherent property of the system, an optimal solution of SIC order and power allocation is developed. Finally, simulation results are presented to verify the correctness of the analytical results as well as indicate the efficiency of authors' SIC order design and power allocation algorithm. |
| first_indexed | 2024-04-11T09:53:46Z |
| format | Article |
| id | doaj.art-216371174b6f467bbeec5efc38098f25 |
| institution | Directory Open Access Journal |
| issn | 1751-8628 1751-8636 |
| language | English |
| last_indexed | 2024-04-11T09:53:46Z |
| publishDate | 2021-02-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Communications |
| spelling | doaj.art-216371174b6f467bbeec5efc38098f252022-12-22T04:30:43ZengWileyIET Communications1751-86281751-86362021-02-0115341042010.1049/cmu2.12074Outage analysis and optimisation of NOMA‐based amplify‐and‐forward relay systemsGuocheng Lv0Xunan Li1Ping Xue2Ye Jin3School of Electronics Engineering and Computer Science Peking University Beijing ChinaNational Computer Network Emergency Response Technical Team/Coordination Center of China Beijing ChinaSchool of Electronics Engineering and Computer Science Peking University Beijing ChinaSchool of Electronics Engineering and Computer Science Peking University Beijing ChinaAbstract In this study, a non‐orthogonal multiple access based cooperative relay system is investigated, where the source serves multiple destinations via an amplify‐and‐forward relay. Direct links between the source and destinations are considered to form a general framework while the maximum ratio combination (MRC) is applied to obtain the largest decoding signal‐to‐interference‐plus‐noise ratio (SINR). Firstly, the outage performance is analysed with given successive interference cancellation (SIC) order and power allocation. An excellent approximated expression for the exact outage probabilities is derived in closed form. In addition, the asymptotic expression at high signal‐to‐noise ratio is provided to gain further insights. Then, in order to fully exploit the potential of the system, a joint optimisation of SIC order design and power allocation is formulated, with the objective of minimising the maximum outage probability of all destinations. By exploring the inherent property of the system, an optimal solution of SIC order and power allocation is developed. Finally, simulation results are presented to verify the correctness of the analytical results as well as indicate the efficiency of authors' SIC order design and power allocation algorithm.https://doi.org/10.1049/cmu2.12074 |
| spellingShingle | Guocheng Lv Xunan Li Ping Xue Ye Jin Outage analysis and optimisation of NOMA‐based amplify‐and‐forward relay systems IET Communications |
| title | Outage analysis and optimisation of NOMA‐based amplify‐and‐forward relay systems |
| title_full | Outage analysis and optimisation of NOMA‐based amplify‐and‐forward relay systems |
| title_fullStr | Outage analysis and optimisation of NOMA‐based amplify‐and‐forward relay systems |
| title_full_unstemmed | Outage analysis and optimisation of NOMA‐based amplify‐and‐forward relay systems |
| title_short | Outage analysis and optimisation of NOMA‐based amplify‐and‐forward relay systems |
| title_sort | outage analysis and optimisation of noma based amplify and forward relay systems |
| url | https://doi.org/10.1049/cmu2.12074 |
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