Outage performance of multi-RIS-assisted NOMA system with imperfect serial interference cancellation
Considering the practical communication environments, the outage performance and the throughput were investigated for multiple reconfigurable intelligent surfaces (RIS) assisted non-orthogonal multiple access (NOMA) system with imperfect serial interference cancellation (SIC).The channel coefficient...
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China InfoCom Media Group
2024-03-01
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| Series: | 物联网学报 |
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| Online Access: | http://www.wlwxb.com.cn/zh/article/doi/10.11959/j.issn.2096-3750.2024.00384/ |
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| _version_ | 1841531240772009984 |
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| author | Jiaqing QIN Liping LUO Jing ZHOU |
| author_facet | Jiaqing QIN Liping LUO Jing ZHOU |
| author_sort | Jiaqing QIN |
| collection | DOAJ |
| description | Considering the practical communication environments, the outage performance and the throughput were investigated for multiple reconfigurable intelligent surfaces (RIS) assisted non-orthogonal multiple access (NOMA) system with imperfect serial interference cancellation (SIC).The channel coefficients of the RIS-assisted NOMA system including the direct and the reflecting paths were approximated by Gamma distribution.An approximate closed-form expressions of outage probability were derived and validated through Monte Carlo simulations.The study investigated the relationship between the outage performance and system parameters, including the impact of imperfect SIC, the number of RIS and the number of reflecting units.The simulation results demonstrate that, compared with the single RIS-assisted NOMA and the traditional NOMA system, the multi-RIS-assisted system achieves a 14.2 dBm gain in signal-to-noise ratio (SNR) for a given outage probability.Thus, employing multiple RISs can improve the outage performance and the system throughput effectively, thereby compensating for the performance degradation caused by imperfect SIC. |
| format | Article |
| id | doaj-art-46f3618d183346d2b389fe5b8c222eb5 |
| institution | Kabale University |
| issn | 2096-3750 |
| language | zho |
| publishDate | 2024-03-01 |
| publisher | China InfoCom Media Group |
| record_format | Article |
| series | 物联网学报 |
| spelling | doaj-art-46f3618d183346d2b389fe5b8c222eb52025-01-15T02:51:42ZzhoChina InfoCom Media Group物联网学报2096-37502024-03-01815316055296743Outage performance of multi-RIS-assisted NOMA system with imperfect serial interference cancellationJiaqing QINLiping LUOJing ZHOUConsidering the practical communication environments, the outage performance and the throughput were investigated for multiple reconfigurable intelligent surfaces (RIS) assisted non-orthogonal multiple access (NOMA) system with imperfect serial interference cancellation (SIC).The channel coefficients of the RIS-assisted NOMA system including the direct and the reflecting paths were approximated by Gamma distribution.An approximate closed-form expressions of outage probability were derived and validated through Monte Carlo simulations.The study investigated the relationship between the outage performance and system parameters, including the impact of imperfect SIC, the number of RIS and the number of reflecting units.The simulation results demonstrate that, compared with the single RIS-assisted NOMA and the traditional NOMA system, the multi-RIS-assisted system achieves a 14.2 dBm gain in signal-to-noise ratio (SNR) for a given outage probability.Thus, employing multiple RISs can improve the outage performance and the system throughput effectively, thereby compensating for the performance degradation caused by imperfect SIC.http://www.wlwxb.com.cn/zh/article/doi/10.11959/j.issn.2096-3750.2024.00384/reconfigurable intelligent surfacenon-orthogonal multiple accessserial interference cancellationoutage performancesystem throughput |
| spellingShingle | Jiaqing QIN Liping LUO Jing ZHOU Outage performance of multi-RIS-assisted NOMA system with imperfect serial interference cancellation 物联网学报 reconfigurable intelligent surface non-orthogonal multiple access serial interference cancellation outage performance system throughput |
| title | Outage performance of multi-RIS-assisted NOMA system with imperfect serial interference cancellation |
| title_full | Outage performance of multi-RIS-assisted NOMA system with imperfect serial interference cancellation |
| title_fullStr | Outage performance of multi-RIS-assisted NOMA system with imperfect serial interference cancellation |
| title_full_unstemmed | Outage performance of multi-RIS-assisted NOMA system with imperfect serial interference cancellation |
| title_short | Outage performance of multi-RIS-assisted NOMA system with imperfect serial interference cancellation |
| title_sort | outage performance of multi ris assisted noma system with imperfect serial interference cancellation |
| topic | reconfigurable intelligent surface non-orthogonal multiple access serial interference cancellation outage performance system throughput |
| url | http://www.wlwxb.com.cn/zh/article/doi/10.11959/j.issn.2096-3750.2024.00384/ |
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