TY - GEN
T1 - Joint Optimization of Multi-STAR-RIS aided NOMA Systems
AU - Wang, Yuhang
AU - Hou, Shujuan
AU - Zhang, Qin
AU - Li, Hai
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - The multiple simultaneously transmitting and reflecting reconfigurable intelligent surfaces (STAR-RISs) aided non-orthogonal multiple access (NOMA) systems was studied in this paper, where the STAR-RISs employ the energy splitting (ES) protocol. To maximize the sum-rate of users, we formulate the optimization problem, and the beamforming vectors of multi-STAR-RIS and power allocation for each user were jointly optimized. To efficiently solve the problem, the problem was decomposed into two subproblems, and then we alternately solve the two subproblems. Simulation results illustrate that when multiple STAR-RISs are deployed, the sum rate increases with STAR-RIS's number. Moreover, the application of multiple ES STAR-RISs in NOMA can further increase the sum rate compared to the conventional RIS.
AB - The multiple simultaneously transmitting and reflecting reconfigurable intelligent surfaces (STAR-RISs) aided non-orthogonal multiple access (NOMA) systems was studied in this paper, where the STAR-RISs employ the energy splitting (ES) protocol. To maximize the sum-rate of users, we formulate the optimization problem, and the beamforming vectors of multi-STAR-RIS and power allocation for each user were jointly optimized. To efficiently solve the problem, the problem was decomposed into two subproblems, and then we alternately solve the two subproblems. Simulation results illustrate that when multiple STAR-RISs are deployed, the sum rate increases with STAR-RIS's number. Moreover, the application of multiple ES STAR-RISs in NOMA can further increase the sum rate compared to the conventional RIS.
KW - Simultaneous transmission and reflection
KW - non-orthogonal multiple access (NOMA)
KW - passive beamforming
KW - power allocation
KW - re-configurable intelligent surface (RIS)
UR - https://www.scopus.com/pages/publications/85164718898
U2 - 10.1109/ICCCS57501.2023.10151377
DO - 10.1109/ICCCS57501.2023.10151377
M3 - Conference contribution
AN - SCOPUS:85164718898
T3 - 2023 8th International Conference on Computer and Communication Systems, ICCCS 2023
SP - 221
EP - 225
BT - 2023 8th International Conference on Computer and Communication Systems, ICCCS 2023
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 8th International Conference on Computer and Communication Systems, ICCCS 2023
Y2 - 21 April 2023 through 24 April 2023
ER -