Results 11 to 20 of about 40,023 (305)
IEEE Access, 2021 An efficient aeronautical telecommunication network (ATN) is proposed in this article based on adaptive multibeam antenna arrays and high-altitude platforms (HAPs).
Yasser Albagory
doaj +1 more source
Design of Adaptive Planar Microstrip Patch Array Operating at 28 GHz for 5G Smart Mobile System
Kurdistan Journal of Applied Research, 2019 Smart antenna system has been studied extensively for the fifth generation of wireless communication systems, because it has made a system better performance of higher capacity and coverage as well as of power-saving.
Zhwan Mohammed Rashid +1 more
doaj +1 more source
Two approaches to multiuser detection over fading channels
Доклады Белорусского государственного университета информатики и радиоэлектроники, 2021 In this paper, two different receiver structures to multiuser detection that are appropriate for the code-division multiple-access systems with antenna arrays in fading channels are investigated and compared. We analyze and compare the performance of the
V. P. Tuzlukov
doaj +1 more source
Приборы и методы измерений, 2019 Mirror antenna systems are widely used in satellite and space communication systems and radio astronomy. Development of these areas requires new efficient antenna systems' design. Possible technical solution for creating an effective mirror antenna is a “
D. V. Douksha +2 more
doaj +1 more source
Design of controlled RF switch for beam steering antenna array [PDF]
, 2008 YesA printed dipole antenna integrated with a duplex RF switch used for mobile base station antenna beam steering is presented. A coplanar waveguide to coplanar strip transition was adopted to feed the printed dipole.
Abd-Alhameed, Raed A. +3 more
core +1 more source
Thinned Smart Antenna of a Semi-circular Dipole Array for Massive MIMO Systems
Advanced Electromagnetics, 2023 Massive MIMO (multiple-input multiple-output) is a multi-user MIMO technology that can provide high-speed multimedia services in 5G wireless networks using sub-6 GHz and millimeter wave bands.
A. Khan, J. S. Roy
doaj +3 more sources
Adaptive Real Time Imaging Synthesis Telescopes [PDF]
, 2012 The digital revolution is transforming astronomy from a data-starved to a data-submerged science. Instruments such as the Atacama Large Millimeter Array (ALMA), the Large Synoptic Survey Telescope (LSST), and the Square Kilometer Array (SKA) will measure
Wright, Melvyn
core +2 more sources
Machine Learning Assisted Adaptive Index Modulation for mmWave Communications
IEEE Open Journal of the Communications Society, 2020 In this article, we propose an orthogonal frequency-division multiplexing system supported by the compressed sensing assisted index modulation, termed as (OFDM-CSIM), applied to millimeter-wave (mmWave) communications.
Haochen Liu +3 more
doaj +1 more source
Linearity considerations in adaptive antenna array applications [PDF]
, 1995 The use of adaptive antenna in mobile communications base stations is self-explanatory. It offers the potential of increased spectrum efficiency, extended range of coverage and reduced delay spread.
Beach, MA +3 more
core +2 more sources
A spectrum efficient cellular base-station antenna architecture [PDF]
, 1992 A concept is considered according to which using the spatial distribution of the users acquired by an array on reception, an antenna system can dynamically assign single narrow beams to illuminate lone mobiles, and broad beams to the numerous groupings ...
Beach, MA, McGeehan, JP, Swales, SC
core +2 more sources