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arXiv · 2110.05686

Uplink NOMA For STAR-RIS Networks

Jiakuo Zuo·Yuanwei Liu·Zhiguo Ding·Xianbin Wang
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Abstract

A simultaneously transmitting and reflecting reconfigurable intelligent surfaces (STAR-RISs) enhanced uplink non-orthogonal multiple access (NOMA) communication system is proposed. A total power consumption minimization problem is formulated by jointly optimizing the transmit-power of users, receive-beamforming vectors at the base station (BS), STAR-beamforming vectors at the STAR-RIS and time slots. Here, the STAR-beamforming introduced by STAR-RIS consists of transmission- and reflection-beamforming. To solve the formulated non-convex problem, an efficient penalty-based alternating optimization (P-AltOp) algorithm is proposed. Simulation results validate the effectiveness of the proposed scheme and reveal the effect of various system parameters on the total power consumption.

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Jiakuo Zuo, Yuanwei Liu, Zhiguo Ding, Xianbin Wang. 2021-10-12. Uplink NOMA For STAR-RIS Networks. https://arxiv.org/abs/2110.05686

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