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Keeping Energy-Neutral Devices Operational: a Coherent Massive Beamforming Approach
Keeping the batteries on the shelf: this is the holy grail for low-cost Internet of Things (IoT) nodes.
An Open Dataset Storage Standard for 6G Testbeds
In summary, DSS offers a comprehensive and flexible framework for enhancing the FAIR principles (Findability, Accessibility, Interoperability, and Reusability) in 6G testbeds, promoting open and efficient data sharing in the research community.
6G Radio Testbeds: Requirements, Trends, and Approaches
The proof of the pudding is in the eating - that is why 6G testbeds are essential in the progress towards the next generation of wireless networks.
The Z3RO Family of Precoders Cancelling Nonlinear Power Amplification Distortion in Large Array Systems
Large array systems use a massive number of antenna elements and clever precoder designs to achieve an array gain at the user location.
Techtile -- Open 6G R&D Testbed for Communication, Positioning, Sensing, WPT and Federated Learning
Techtile is a multi-functional and versatile testbed, providing fine-grained distributed resources for new communication, positioning and sensing technologies.
Array Placement in Distributed Massive MIMO for Power Saving considering Environment Information
We validate the performance of the models with a ray-tracing simulator considering different signal coverage levels.
Grant-Free Random Access in Massive MIMO for Static Low-Power IoT Nodes
In contrast to the grant-based scheme, a grant-free approach uses user-specific preambles and has a small overhead, at the expense of more complexity at access points.
Z3RO Precoder Canceling Nonlinear Power Amplifier Distortion in Large Array Systems
In this work, a linear precoder is proposed that allows working close to saturation while canceling the coherent combining of the third order nonlinear \gls{pa} distortion at the user location.
Spatial Distribution of Distortion due to Nonlinear Power Amplification in Distributed Massive MIMO
As a comparison with a central massive MIMO system, having the same total number of antennas, the distortion in distributed massive MIMO is considerably more uniformly distributed in space.
Array Placement in Distributed Massive MIMO for power saving considering Radiation Pattern
Our results suggest that i) among the three factors, the array radiation pattern of each AP is the most important one in determining the optimal AP placement for the D-mMIMO; ii) the performance of the D-mMIMO is highly impacted by the placement and array radiation pattern of each AP, the D-mMIMO with unoptimized placement may perform even worse than the CAS with massive MIMO (C-mMIMO); iii) with the consideration of patch antennas and the mutual coupling effect, the optimized D-mMIMO can potentially save more than 7 dB transmit power compared to the C-mMIMO.
Experimental Exploration of Unlicensed Sub-GHz Massive MIMO for Massive Internet-of-Things
Networks can be extended with more gateways, increasing the number of supported devices.
A Primer on Techtile: An R&D Testbed for Distributed Communication, Sensing and Positioning
The Techtile measurement infrastructure is a multi-functional, versatile testbed for new communication and sensing technologies relying on fine-grained distributed resources.
Massive MIMO goes Sub-GHz: Implementation and Experimental Exploration for LPWANs
The assessment demonstrates the effect of channel hardening as well as the potential benefits of the experienced array gain.
