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pro vyhledávání: '"Heath Jr., Robert W."'
We consider a setting involving $N$ agents, where each agent interacts with an environment modeled as a Markov Decision Process (MDP). The agents' MDPs differ in their reward functions, capturing heterogeneous objectives/tasks. The collective goal of
Externí odkaz:
http://arxiv.org/abs/2409.05291
Autor:
Patel, Kartik, Heath Jr, Robert W.
Sensor-aided beamforming reduces the overheads associated with beam training in millimeter-wave (mmWave) multi-input-multi-output (MIMO) communication systems. Most prior work, though, neglects the challenges associated with establishing multi-user (
Externí odkaz:
http://arxiv.org/abs/2406.05300
Codebook-based beam selection is one approach for configuring millimeter wave communication links. The overhead required to reconfigure the transmit and receive beam pair, though, increases in highly dynamic vehicular communication systems. Location
Externí odkaz:
http://arxiv.org/abs/2404.10936
Obtaining accurate and timely channel state information (CSI) is a fundamental challenge for large antenna systems. Mobile systems like 5G use a beam management framework that joins the initial access, beamforming, CSI acquisition, and data transmiss
Externí odkaz:
http://arxiv.org/abs/2403.03053
The use of one-bit analog-to-digital converter (ADC) has been considered as a viable alternative to high resolution counterparts in realizing and commercializing massive multiple-input multiple-output (MIMO) systems. However, the issue of discarding
Externí odkaz:
http://arxiv.org/abs/2403.00621
Fluid antenna systems (FASs) can reconfigure their locations freely within a spatially continuous space. To keep favorable antenna positions, the channel state information (CSI) acquisition for FASs is essential. While some techniques have been propo
Externí odkaz:
http://arxiv.org/abs/2402.02688
Autor:
Björnson, Emil, Chae, Chan-Byoung, Heath Jr., Robert W., Marzetta, Thomas L., Mezghani, Amine, Sanguinetti, Luca, Rusek, Fredrik, Castellanos, Miguel R., Jun, Dongsoo, Demir, Özlem Tugfe
The increasing demand for wireless data transfer has been the driving force behind the widespread adoption of Massive MIMO (multiple-input multiple-output) technology in 5G. The next-generation MIMO technology is now being developed to cater to the n
Externí odkaz:
http://arxiv.org/abs/2401.02844
Fluid antenna systems (FASs) can reconfigure their antenna locations freely within a spatially continuous space. To keep favorable antenna positions, the channel state information (CSI) acquisition for FASs is essential. While some techniques have be
Externí odkaz:
http://arxiv.org/abs/2312.06551
Beam management is a strategy to unify beamforming and channel state information (CSI) acquisition with large antenna arrays in 5G. Codebooks serve multiple uses in beam management including beamforming reference signals, CSI reporting, and analog be
Externí odkaz:
http://arxiv.org/abs/2312.02178
Antenna behaviors such as mutual coupling, near-field propagation, and polarization cannot be neglected in signal and channel models for wireless communication. We present an electromagnetic-based array manifold that accounts for several complicated
Externí odkaz:
http://arxiv.org/abs/2311.04835