15 papers · 1 filter
Trade-Offs in Decentralized Gigantic MIMO with Hard-Boundary Constraints
Juan Vidal AlegrÃa, Joao Vieira, Ove Edfors
To maintain the antenna apertures offered by 5G massive MIMO systems operating at the sub-6GHz band, known as FR1, 6G base stations (BSs) using the upper-mid band, FR3, should incr…
Vertical Sub-THz Channel Characterization: Sounder Implementation and Initial Measurements
Ali Al-Ameri, Xuesong Cai, Juan Sanchez +4
We present a measurement-based characterization of indoor vertical ceiling-to-ground sub-THz channels in the 136-144 GHz band, motivated by ceiling-mounted radio-unit deployments f…
A Scalable 256-Antenna Distributed MIMO Testbed with Real-Time Fully Digital Beamforming
Dumitra Iancu, Vilgot Snygg, Sijia Cheng +7
Distributed massive MIMO (D-MIMO) is a promising technology for future generation wireless systems as it takes advantage of both an increased array aperture and a decentralized pro…
Multi-User XR Offloading via Massive MIMO: A System-Level Analysis using a Real-Life Dataset
Love Bárány, Ilayda Yaman, Ove Edfors +2
SLAM is one of the biggest bottlenecks of XR devices, which have strict requirements for latency, power consumption, and user satisfaction. A solution that has been proposed and st…
Zero-Forcing MU-MIMO Precoding under Power Amplifier Non-Linearities
Juan Vidal AlegrÃa, Ashkan Sheikhi, Ove Edfors
In multi-user multiple-input multiple-output (MU-MIMO) systems, the non-linear behavior of the power amplifiers (PAs) may cause degradation of the linear precoding schemes dealing…
Large Intelligent Surfaces with Low-End Receivers: From Scaling to Antenna and Panel Selection
Ashkan Sheikhi, Juan Vidal AlegrÃa, Ove Edfors
Feasibility of the promising large intelligent surface (LIS) concept, as well as its scalability, relies on the use of low-cost hardware components, raising concerns about the effe…