4 papers
Fluid Antenna Secure Channel-driven Constellation (FASCC): a Physical Layer Security approach
Daniel Dinis, Risto Wichman
Fluid antenna systems (FAS) have recently emerged as a promising technology for future wireless networks due to their ability to access a large number of channel realizations using…
Lightweight Gated Recurrent Unit Variants for Real-Time Channel Prediction
Kyriakos Christodoulides, Kyriakos M. Deliparaschos, Risto Wichman +1
Machine-learning-based channel predictors must operate under stringent latency, memory, and computational constraints while remaining robust to noisy and time-varying observations.…
Performance Analysis of LEO-Terrestrial Systems in Presence of Doppler Effect
Islam M. Tanash, Nuria Gonzalez-Prelcic, Risto Wichman
In this paper, we present a novel stochastic geometry-based approach to analyze the effect of residual Doppler shift on orthogonal frequency-division multiple access (OFDMA) system…
Enhancing User Throughput in Multi-panel mmWave Radio Access Networks for Beam-based MU-MIMO Using a DRL Method
Ramin Hashemi, Vismika Ranasinghe, Teemu Veijalainen +2
Millimeter-wave (mmWave) communication systems, particularly those leveraging multi-user multiple-input and multiple-output (MU-MIMO) with hybrid beamforming, face challenges in op…