Opportunistic RIS-assisted rate splitting transmission in coordinated multiple points networks

TY - JOUR

T1 - Opportunistic RIS-assisted rate splitting transmission in coordinated multiple points networks

AU - Tian, Yue

AU - Xiao, Baiyun

AU - Wang, Xianling

AU - Kho, Yau Hee

AU - Zhu, Chen

AU - Li, Wenda

AU - Li, Qinying

AU - Hu, Xuejie

N1 - Funding Information: This work was supported in part by the Natural Science Foundation of Xiamen under Grant 3502Z20227213 ; in part by the Youth Innovation Foundation of Xiamen under Grant 3502Z20206067 ; in part by the Natural Science Foundation of China under Grant 62201482 ; in part by the Natural Science Foundation of Fujian Province, China , under Grant 2019J01874 , Grant 2021J011219 , Grant 2022J011276 , and Grant 2023J01130536 ; in part by the Innovation Foundation of Xiamen Sage Tech. under Grant ZK-HX21124 ; and in part by the Xiamen Key Science and Technology Program under Grant 3502Z20221026 . The authors would like to thank for the contribution of Xiamen Sage Tech. Ltd. in the on-going development of the Metaverse Engine Design. Publisher Copyright: © 2023 Elsevier B.V.

PY - 2023/3/15

Y1 - 2023/3/15

N2 - Reconfigurable intelligent surfaces (RIS) have attracted a great deal of interests due to its potential contributions to the next-generation mobile networks. The deployment of RIS in multi-user wireless networks promises to reduce system hardware costs, signal processing complexity, as well as energy consumption due to its small size, lightweight and ability to actively shape the wireless propagation environment. Based on the ability to suitably adjust the phase shifts according to the dynamic wireless environment, the transmission rate and energy efficiency can be improved by deploying software-controlled meta-surfaces to reflect signals from the source to the destination. This paper proposes a RIS-assisted rate splitting-based transmission strategy in the Coordinated Multiple Points (CoMP) transmission network. The obtained results demonstrated that the proposed opportunistic RIS-assisted rate splitting transmission outperforms the conventional jointly transmission Non-Orthogonal Multiple Access (NOMA) strategy and the mutual-aided NOMA strategy in terms of outage probability under a target power level when the obstacle exists. Along with the one-off control RIS, the network spectral efficiency can be improved significantly by the proposed opportunistic RIS-assisted (O-RIS) rate splitting strategy under the target channel interference levels.

AB - Reconfigurable intelligent surfaces (RIS) have attracted a great deal of interests due to its potential contributions to the next-generation mobile networks. The deployment of RIS in multi-user wireless networks promises to reduce system hardware costs, signal processing complexity, as well as energy consumption due to its small size, lightweight and ability to actively shape the wireless propagation environment. Based on the ability to suitably adjust the phase shifts according to the dynamic wireless environment, the transmission rate and energy efficiency can be improved by deploying software-controlled meta-surfaces to reflect signals from the source to the destination. This paper proposes a RIS-assisted rate splitting-based transmission strategy in the Coordinated Multiple Points (CoMP) transmission network. The obtained results demonstrated that the proposed opportunistic RIS-assisted rate splitting transmission outperforms the conventional jointly transmission Non-Orthogonal Multiple Access (NOMA) strategy and the mutual-aided NOMA strategy in terms of outage probability under a target power level when the obstacle exists. Along with the one-off control RIS, the network spectral efficiency can be improved significantly by the proposed opportunistic RIS-assisted (O-RIS) rate splitting strategy under the target channel interference levels.

KW - Coordinated multiple points (CoMP)

KW - Non-orthgonal multiple access (NOMA)

KW - Opportunistic reconfigurable intelligent surfaces (O-RIS)

KW - Outage probability

KW - Rate splitting multiple access (RSMA)

U2 - 10.1016/j.comcom.2023.01.023

DO - 10.1016/j.comcom.2023.01.023

M3 - Article

SN - 0010-4655

VL - 202

SP - 23

EP - 32

JO - Computer Communications

JF - Computer Communications

ER -