Numerical results show that the proposed impairment-aware STAR-RIS-NOMA design achieves higher sum rates and lower bit error rates than the considered hardware-impairment-unaware benchmarks.
Simulation results show that the proposed method can significantly improve the sum rate of users as compared to benchmark with FPA + Optimized STAR-RIS, 6DMA + Random STAR-RIS, and FPA + Random STAR-RIS.
Yuewei Wu, Ming-Hao Chen, Jing-Jing Yang et al.· IEEE Open Journal of the Com...· 0 citations
Numerical results demonstrate that the proposed DT-assisted approach significantly reduces online interaction overhead by shifting the computational burden of ray-tracing to an offline generative phase, and achieves superior sum-rate performance and link robustness under dynamic blockages compared to conventional deep...
Ke Xu, Wei-Qiang Wu· Italian National Conference...· 0 citations
This paper investigates a reconfigurable intelligent surface (RIS)-aided hybrid beamforming (HBF) framework for downlink multi-user millimeter-wave systems operating under practical hardware constraints, and develops a hardware-constrained optimization problem to maximize the geometric mean (GM) of user rates, thereby...
H. M. Tran, T. V. Dinh, H. T. Nguyen et al.· PLoS ONE· 0 citations
As extremely large antenna arrays (ELAAs) become central to next-generation wireless systems, the transition into the near-field propagation regime enables the exploitation of spherical wavefronts for radial-domain beamfocusing. This capability is pivotal for emerging applications requiring precise spatial isolation, s...
V. Centritto, S. Droulias, Angeliki Alexiou· 1 citation
In this paper, we investigate beamforming for a wideband terahertz (THz) communication system serving multiple users in the near-field region. A hybrid beamforming architecture employing fixed true time delays (FTTDs) and phase shifters (PSs) is introduced to reduce the spatial wideband effect. Both fully-connected (FC...
Wen-Qiang Chu, Qiu-Yan Liu, Yan-Xia Cao et al.· IEEE Transactions on Wireles...· 0 citations
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