Active STARS-Assisted Rate-Splitting Multiple-Access Networks
The active simultaneously transmitting/reflecting surface (ASTARS) is considered a promising technique to achieve full spatial coverage and overcome multiplicative fading caused by cascaded paths. This paper investigates the performance of ASTARS-assisted rate-splitting multiple-access networks (AST...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-09-01
|
| Series: | Electronics |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2079-9292/12/18/3815 |
| _version_ | 1797580445792075776 |
|---|---|
| author | Jin Xie Xinwei Yue Zhihao Han Xuliang Liu Wei Xiang |
| author_facet | Jin Xie Xinwei Yue Zhihao Han Xuliang Liu Wei Xiang |
| author_sort | Jin Xie |
| collection | DOAJ |
| description | The active simultaneously transmitting/reflecting surface (ASTARS) is considered a promising technique to achieve full spatial coverage and overcome multiplicative fading caused by cascaded paths. This paper investigates the performance of ASTARS-assisted rate-splitting multiple-access networks (ASTARS-RSMA) with multiple transmission users (TUs) and reflection users (RUs). The energy-splitting configurations of ASTARS and the effects of imperfect/perfect successive interference cancellation (SIC) on ASTARS-RSMA networks are considered in the analysis. We derive new exact and asymptotic expressions of the outage probability with imperfect/perfect SIC for TUs and RUs. On this basis, we further calculate the diversity orders of TUs and RUs. Moreover, the system throughput and energy efficiency (EE) of ASTARS-RSMA are evaluated in the delay-limited mode. The simulation results confirm the accuracy of the theoretical expressions and show that (i) the outage probability and system throughput with imperfect/perfect SIC of ASTARS-RSMA exceed that of passive simultaneously transmitting/reflecting surface (PSTARS)-assisted RSMA when the number of elements is not too large; (ii) although ASTARS increases power consumption compared to PSTARS, it can bring further EE improvements to RSMA networks. |
| first_indexed | 2024-03-10T22:51:01Z |
| format | Article |
| id | doaj.art-3a91cd94d8e142158ddb6e42641eda33 |
| institution | Directory Open Access Journal |
| issn | 2079-9292 |
| language | English |
| last_indexed | 2024-03-10T22:51:01Z |
| publishDate | 2023-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electronics |
| spelling | doaj.art-3a91cd94d8e142158ddb6e42641eda332023-11-19T10:21:44ZengMDPI AGElectronics2079-92922023-09-011218381510.3390/electronics12183815Active STARS-Assisted Rate-Splitting Multiple-Access NetworksJin Xie0Xinwei Yue1Zhihao Han2Xuliang Liu3Wei Xiang4Key Laboratory of Information and Communication Systems, Ministry of Information Industry, Beijing Information Science and Technology University, Beijing 100101, ChinaKey Laboratory of Information and Communication Systems, Ministry of Information Industry, Beijing Information Science and Technology University, Beijing 100101, ChinaSchool of Electronic and Information Engineering, Beihang University, Beijing 100191, ChinaYellow River Conservancy Technical Institute, Kaifeng 475001, ChinaSchool of Computing, Engineering and Mathematical Sciences, La Trobe University, Melbourne, VIC 3086, AustraliaThe active simultaneously transmitting/reflecting surface (ASTARS) is considered a promising technique to achieve full spatial coverage and overcome multiplicative fading caused by cascaded paths. This paper investigates the performance of ASTARS-assisted rate-splitting multiple-access networks (ASTARS-RSMA) with multiple transmission users (TUs) and reflection users (RUs). The energy-splitting configurations of ASTARS and the effects of imperfect/perfect successive interference cancellation (SIC) on ASTARS-RSMA networks are considered in the analysis. We derive new exact and asymptotic expressions of the outage probability with imperfect/perfect SIC for TUs and RUs. On this basis, we further calculate the diversity orders of TUs and RUs. Moreover, the system throughput and energy efficiency (EE) of ASTARS-RSMA are evaluated in the delay-limited mode. The simulation results confirm the accuracy of the theoretical expressions and show that (i) the outage probability and system throughput with imperfect/perfect SIC of ASTARS-RSMA exceed that of passive simultaneously transmitting/reflecting surface (PSTARS)-assisted RSMA when the number of elements is not too large; (ii) although ASTARS increases power consumption compared to PSTARS, it can bring further EE improvements to RSMA networks.https://www.mdpi.com/2079-9292/12/18/3815active simultaneously transmitting/reflecting surfacerate-splitting multiple accessoutage probabilityenergy efficiency |
| spellingShingle | Jin Xie Xinwei Yue Zhihao Han Xuliang Liu Wei Xiang Active STARS-Assisted Rate-Splitting Multiple-Access Networks Electronics active simultaneously transmitting/reflecting surface rate-splitting multiple access outage probability energy efficiency |
| title | Active STARS-Assisted Rate-Splitting Multiple-Access Networks |
| title_full | Active STARS-Assisted Rate-Splitting Multiple-Access Networks |
| title_fullStr | Active STARS-Assisted Rate-Splitting Multiple-Access Networks |
| title_full_unstemmed | Active STARS-Assisted Rate-Splitting Multiple-Access Networks |
| title_short | Active STARS-Assisted Rate-Splitting Multiple-Access Networks |
| title_sort | active stars assisted rate splitting multiple access networks |
| topic | active simultaneously transmitting/reflecting surface rate-splitting multiple access outage probability energy efficiency |
| url | https://www.mdpi.com/2079-9292/12/18/3815 |
| work_keys_str_mv | AT jinxie activestarsassistedratesplittingmultipleaccessnetworks AT xinweiyue activestarsassistedratesplittingmultipleaccessnetworks AT zhihaohan activestarsassistedratesplittingmultipleaccessnetworks AT xuliangliu activestarsassistedratesplittingmultipleaccessnetworks AT weixiang activestarsassistedratesplittingmultipleaccessnetworks |