Results 51 to 60 of about 53,947 (297)
Joint Pilot Design and Uplink Power Allocation in Multi-Cell Massive MIMO Systems
, 2018 This paper considers pilot design to mitigate pilot contamination and provide good service for everyone in multi-cell Massive multiple input multiple output (MIMO) systems. Instead of modeling the pilot design as a combinatorial assignment problem, as in
Björnson, Emil +2 more
core +1 more source
Advanced Engineering Materials, EarlyView.A wood‐based magnetic and conductive material called Magwood (MW), capable of blocking almost 99.99% of electromagnetic waves (in the X‐band frequency range), is synthesized using a simple, solvent‐free process. MW is lightweight, resists water, and is flame‐retardant, making it a promising alternative for shielding electronics. The rapid proliferation
Akash Madhav Gondaliya +3 more
wiley +1 more source
Intelligence Enabled by 2D Metastructures in Antennas and Wireless Propagation Systems
IEEE Open Journal of Antennas and Propagation, 2022 The development of the next generation of wireless systems is bringing renewed attention to the physical layer of the communication link. Indeed, the new low-latency requirements cannot be satisfied relying only upon the extreme virtualization of the ...
Mirko Barbuto +8 more
doaj +1 more source
Novel wearable antenna systems for high datarate mobile communication in healthcare [PDF]
, 2014 In critical healthcare applications, there is a need for reliable wideband mobile communication links, implemented by portable units with sufficient autonomy.
Agneessens, Sam +8 more
core +2 more sources
Advanced Functional Materials, EarlyView.Intelligent radiative cooling devices, adaptable to various weather conditions, have the potential for year‐round energy savings. This study introduces a sustainable dual‐mode film made from polycaprolactone nanofibers and upcycled chip bags for effective thermal management.
Qimeng Song +4 more
wiley +1 more source
Direction of Arrival Estimation with a Novel Single-Port Smart Antenna
EURASIP Journal on Advances in Signal Processing, 2004 A novel direction of arrival (DOA) estimation technique that uses the conventional multiple-signal classification (MUSIC) algorithm with periodic signals is applied to a single-port smart antenna.
Karmakar Nemai C, Sun Chen
doaj +1 more source
A Novel Uplink Data Transmission Scheme For Small Packets In Massive MIMO System
, 2014 Intelligent terminals often produce a large number of data packets of small lengths. For these packets, it is inefficient to follow the conventional medium access control (MAC) protocols because they lead to poor utilization of service resources.
Chen, Xiaohui +3 more
core +1 more source
Active textile antennas in professional garments for sensing, localisation and communication [PDF]
, 2014 New wireless wearable monitoring systems integrated in professional garments require a high degree of reliability and autonomy. Active textile antenna systems may serve as platforms for body-centric sensing, localisation, and wireless communication ...
Agneessens, Sam +10 more
core +2 more sources
Advanced Functional Materials, EarlyView.This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner +9 more
wiley +1 more source
Review on Multifunctional Pattern and Polarization Reconfigurable Antennas
IEEE AccessThis paper presents a detailed review of multifunctional pattern and polarization reconfigurable antennas, highlighting their potential to enhance performance of the wireless communication systems. These adaptable antennas offer versatile functionalities,
Venkataswamy Suryapaga +1 more
doaj +1 more source