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Found 29 papers, 2 papers with code
Physically Large Apertures for Wireless Power Transfer: Performance and Regulatory Aspects
The power received at the device side decays rapidly with the distance from a conventional transmit antenna with a physically small aperture.
Weighted-Sum Energy Efficiency Maximization in User-Centric Uplink Cell-Free Massive MIMO
This paper introduces the weighted-sum energy efficiency (WSEE) as an advanced performance metric designed to represent the uplink energy efficiency (EE) of individual user equipment (UE) in a user-centric Cell-Free massive MIMO (CF-mMIMO) system more accurately.
Experimental Study on the Effect of Synchronization Accuracy for Near-Field RF Wireless Power Transfer in Multi-Antenna Systems
Wireless power transfer (WPT) technologies hold promise for enhancing device autonomy, particularly for energy-limited IoT systems.
Single versus Multi-Tone Wireless Power Transfer with Physically Large Array
Distributed beamforming is a key enabler to provide power wirelessly to a massive amount of energy-neutral devices (ENDs).
How to Perform Distributed Precoding to Wirelessly Power Shelf Labels: Signal Processing and Measurements
This study focuses on optimizing the energy delivery to Energy Receivers (ERs) while minimizing system total transmit power.
MmWave for Extended Reality: Open User Mobility Dataset, Characterisation, and Impact on Link Quality
User mobility in extended reality (XR) can have a major impact on millimeter-wave (mmWave) links and may require dedicated mitigation strategies to ensure reliable connections and avoid outage.
IoT on the Road to Sustainability: Vehicle or Bandit?
The Internet of Things (IoT) can support the evolution towards a digital and green future.
Anchor Layout Optimization for Ultrasonic Indoor Positioning Using Swarm Intelligence
Indoor positioning applications are craving for ever higher precision and accuracy across the entire coverage zone.
Channel Performance Metrics and Evaluation for XR Head-Mounted Displays with mmWave Arrays
Millimeter-wave (mmWave) technology holds the potential to revolutionize head-mounted displays (HMDs) by enabling high-speed wireless communication with nearby processing nodes, where complex video rendering can take place.
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.
Impact of Array Configuration on Head-Mounted Display Performance at mmWave Bands
DE gain is a significant factor in understanding system performance since mmWave channel sparsity and eigenmode imbalance often results in provisioning the majority of the available power to the DE.
Toward Energy-Efficient Massive MIMO: Graph Neural Network Precoding for Mitigating Non-Linear PA Distortion
In the four user-case, for a fixed sum rate, the total consumed power (PA and processing) of the GNN precoder is 3. 24 and 1. 44 times lower compared to ZF and ZF plus DPD respectively.
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.
An Acoustic Simulation Framework to Support Indoor Positioning and Data Driven Signal Processing Assessments
We present an indoor acoustic simulation framework that supports both ultrasonic and audible signaling.
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: a Flexible Testbed for Distributed Acoustic Indoor Positioning and Sensing
The acoustic parameters of the room, particularly the reverberation and ambient noise, are measured to take these into account for future innovative acoustic indoor positioning and sensing systems.
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.
A Multi-band Solution for Interacting with Energy-Neutral Devices
RF Wireless Power Transfer (WPT) emerges as a technology for charging autonomous devices, enabling simultaneous power and information transfer.
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.
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.
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.
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.
Energy Neutral Devices: Can Hybrid RF Acoustic Signals Point Them Out?
We present a hybrid signaling approach to position energy-neutral devices.
Massive MIMO in Sub-6 GHz and mmWave: Physical, Practical, and Use-Case Differences
The use of base stations (BSs) and access points (APs) with a large number of antennas, called Massive MIMO (multiple-input multiple-output), is a key technology for increasing the capacity of 5G networks and beyond.
Information Theory Information Theory
