A circuit-based metasurface is proposed for multiuser orthogonal beamforming and multiple-input-multiple-output (MIMO) wireless communications. The metasurface consists of several pairs of propagation and phased shifter layers, stacked several times to form an electrically thin structure that provides the necessary non...
Feiyu Shan, Hao Luo, Ahmed Alkhateeb et al.· Metamaterials· 0 citations
Sensing-aided beam prediction can reduce the beam-training overhead of millimeter-wave (mmWave) systems by leveraging environmental information from complementary modalities such as vision and position. However, the resulting sensing and inference pipeline can be energy-intensive, motivating the use of energy-efficient...
N. Nguyen, Phuong Nam Tran, Meng-Yuan Ma et al.· 0 citations
Digital Twin User pre-Screening (DiTUS), a digital-twin (DT)-aided framework that identifies promising users before instantaneous CSI acquisition, demonstrating that DT-based prescreening preserves substantial multiuser-diversity gains by identifying strong, spatially compatible users before acquiring effective-channel...
Namhyun Kim, Mahmoud Saad Abouamer, Jeonghun Park et al.· 0 citations
Simulation results demonstrate that the proposed sub-6 GHz-assisted GNN-based beamformer achieves competitive and often superior sum-rate performance compared to classical baselines that rely on full mmWave CSI.
Sina Tavakolian, Abolfazl Zakeri, Ahmed Alkhateeb et al.· 0 citations
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