Performance Analysis of the STAR-RIS-Assisted Downlink NOMA Communication System With MRC

被引：5
|
作者：
Singh, Ugrasen [1 ]
Al-Tous, Hanan [1 ]
Tirkonnen, Olav [1 ]
Bhatnagar, Manav R. [2 ]
机构：
[1] Aalto Univ, Dept Informat & Commun Engn, Espoo 00076, Finland
[2] Indian Inst Technol Delhi, Dept Elect Engn, New Delhi 110016, India
来源：
IEEE COMMUNICATIONS LETTERS | 2023年 / 27卷 / 07期
关键词：
Maximum ratio combining; non-orthogonal multiple acces; outage probability; beamforming; reconfigurable intelligent surface; system throughput; NETWORKS;
D O I：
10.1109/LCOMM.2023.3273313
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
We discuss a simultaneously transmitting and reflecting-reconfigurable intelligent surface (STAR-RIS)-assisted downlink non-orthogonal multiple access (NOMA) communication system. STAR-RIS employs the energy splitting protocol for transmitting and reflecting the incident signals to users located on different sides of the surface. To study the impact of multiple antennas on the system performance, we perform maximum ratio combining (MRC) at NOMA users and beamforming towards STAR-RIS at the base station (BS). We model the distribution of cascaded Rician fading channels for the proposed system. Closed-form expressions of outage probability, asymptotic outage probability, and system throughput are derived. All theoretically derived results are verified via Monte Carlo simulation.
引用
收藏
页码：1739 / 1743
页数：5
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