Cooperative NOMA system with incremental relaying over Nakagami- fading channels
In our article, we apply incremental relay to the cooperative non-orthogonal multiple access network, in which the incremental relay employs amplify and forward protocol. The main communication process of the system is that one base station transmits messages to multiple non-orthogonal multiple acce...
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| Format: | Article |
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Wiley
2022-01-01
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| Series: | International Journal of Distributed Sensor Networks |
| Online Access: | https://doi.org/10.1177/15501477211072699 |
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| author | Zhenling Wang Dawei Qiao |
| author_facet | Zhenling Wang Dawei Qiao |
| author_sort | Zhenling Wang |
| collection | DOAJ |
| description | In our article, we apply incremental relay to the cooperative non-orthogonal multiple access network, in which the incremental relay employs amplify and forward protocol. The main communication process of the system is that one base station transmits messages to multiple non-orthogonal multiple access users with the assistance of incremental relay. In addition, we deeply analyze the outage behavior of the incremental cooperative non-orthogonal multiple access system over Nakagami- m fading channels. Specifically, the exact and asymptotic closed-form expressions of outage probabilities are all derived for paired users u n and u f , which are nearby and distant user, respectively. On this basis, the diversity orders of the paired users u n and u f are also acquired, which are μ ( n + f +1) and μ( f +1). We also investigate the conventional cooperative non-orthogonal multiple access system, which serves as a benchmark of the incremental cooperative non-orthogonal network. Through the proof, we can conclude that the outage behavior of the distant u f has been improved by adopting incremental relay. Finally, the performance of the system is simulated. The following conclusions can be drawn from the numerical simulation results: (1) the outage performance and throughput of the system have been significantly improved by using the incremental relay protocol; (2) as the multipath fading μ increases, the outage performance of the system becomes better; and (3) the greater the difference in channel gain between paired users, the incremental cooperative non-orthogonal system can achieve better outage performance. |
| format | Article |
| id | doaj-art-3ad8d70681bb4f53a4154c20bb196af9 |
| institution | Kabale University |
| issn | 1550-1477 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Distributed Sensor Networks |
| spelling | doaj-art-3ad8d70681bb4f53a4154c20bb196af92025-02-03T05:44:19ZengWileyInternational Journal of Distributed Sensor Networks1550-14772022-01-011810.1177/15501477211072699Cooperative NOMA system with incremental relaying over Nakagami- fading channelsZhenling Wang0Dawei Qiao1School of Internet of Things Technology, Wuxi Institute of Technology, Wuxi, ChinaSchool of Emergency Management, Henan Polytechnic University, Jiaozuo, ChinaIn our article, we apply incremental relay to the cooperative non-orthogonal multiple access network, in which the incremental relay employs amplify and forward protocol. The main communication process of the system is that one base station transmits messages to multiple non-orthogonal multiple access users with the assistance of incremental relay. In addition, we deeply analyze the outage behavior of the incremental cooperative non-orthogonal multiple access system over Nakagami- m fading channels. Specifically, the exact and asymptotic closed-form expressions of outage probabilities are all derived for paired users u n and u f , which are nearby and distant user, respectively. On this basis, the diversity orders of the paired users u n and u f are also acquired, which are μ ( n + f +1) and μ( f +1). We also investigate the conventional cooperative non-orthogonal multiple access system, which serves as a benchmark of the incremental cooperative non-orthogonal network. Through the proof, we can conclude that the outage behavior of the distant u f has been improved by adopting incremental relay. Finally, the performance of the system is simulated. The following conclusions can be drawn from the numerical simulation results: (1) the outage performance and throughput of the system have been significantly improved by using the incremental relay protocol; (2) as the multipath fading μ increases, the outage performance of the system becomes better; and (3) the greater the difference in channel gain between paired users, the incremental cooperative non-orthogonal system can achieve better outage performance.https://doi.org/10.1177/15501477211072699 |
| spellingShingle | Zhenling Wang Dawei Qiao Cooperative NOMA system with incremental relaying over Nakagami- fading channels International Journal of Distributed Sensor Networks |
| title | Cooperative NOMA system with incremental relaying over Nakagami- fading channels |
| title_full | Cooperative NOMA system with incremental relaying over Nakagami- fading channels |
| title_fullStr | Cooperative NOMA system with incremental relaying over Nakagami- fading channels |
| title_full_unstemmed | Cooperative NOMA system with incremental relaying over Nakagami- fading channels |
| title_short | Cooperative NOMA system with incremental relaying over Nakagami- fading channels |
| title_sort | cooperative noma system with incremental relaying over nakagami fading channels |
| url | https://doi.org/10.1177/15501477211072699 |
| work_keys_str_mv | AT zhenlingwang cooperativenomasystemwithincrementalrelayingovernakagamifadingchannels AT daweiqiao cooperativenomasystemwithincrementalrelayingovernakagamifadingchannels |