Results 11 to 20 of about 117,363 (337)
Optical Adaptive Antenna Array for Multiuser Mobile Optical Communication
IEEE Access, 2019 In this paper, an optical adaptive antenna array system for multi-user optical mobile communication is studied. A coherent signal source is embedded in a spherical optical phased cell array with an external spherical lens system.
Haibo Wang +3 more
doaj +1 more source
Downlink calibration requirements for the TSUNAMI (II) adaptive antenna testbed [PDF]
, 1998 The TSUNAMI (II) project is an investigation into the use of adaptive antenna technology. The field trial system has been developed for the purposes of investigating the feasibility of implementing such a system using a GSM-1800 base station system.
Beach, MA, Simmonds, CM
core +2 more sources
Theory and key technologies research on adaptive multi-antenna in coal mine tunnel
Gong-kuang zidonghua, 2017 Characteristics of wireless communication environment and multi-antenna radiation in coal mine tunnel were analyzed. An adaptive multi-antenna technology was proposed on basis of tunnel waveguide theory and adaptive array antenna technology.
C, ZHANG Yi, XU Zhao, GAO Min
doaj +1 more source
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
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
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
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