Results 11 to 20 of about 24,067 (174)

Joint power control and user grouping mechanism for efficient uplink non‐orthogonal multiple access‐based 5G communication: Utilising the Lèvy‐flight firefly algorithm

open access: yesIET Networks, EarlyView., 2023
We utilise a metaheuristic optimisation method, inspired by nature, called the Lévy‐flight firefly algorithm (LFA), to tackle the power regulation and user grouping in the NOMA systems. Abstract The non‐orthogonal multiple access strategies have shown promise to boost fifth generation and sixth generation wireless networks' spectral efficiency and ...
Zaid Albataineh   +4 more
wiley   +1 more source

Capacity Improvement in Reconfigurable Intelligent Surface Assisted MIMO Communications

open access: yesIEEE Access, 2021
Reconfigurable intelligent surface (RIS) is thought to be a potential key technique for future wireless communications due to its ability for manipulating the electromagnetic environment smartly.
Jun Yang   +4 more
doaj   +1 more source

Adaptive algorithm based on antenna arrays for radio communication systems [PDF]

open access: yesSerbian Journal of Electrical Engineering, 2017
Trends in the modern world increasingly lead to the growing popularity of wireless technologies. This is possible due to the rapid development of mobile communications, the Internet gaining high popularity, using wireless networks at enterprises,
Fedosov Valentin   +2 more
doaj   +1 more source

Rate Splitting for MIMO Wireless Networks: A Promising PHY-Layer Strategy for LTE Evolution [PDF]

open access: yes, 2016
MIMO processing plays a central part towards the recent increase in spectral and energy efficiencies of wireless networks. MIMO has grown beyond the original point-to-point channel and nowadays refers to a diverse range of centralized and distributed ...
Clerckx, B   +4 more
core   +2 more sources

Indoor terminal localization technology using a single access point based on distributed MIMO networks

open access: yesTongxin xuebao, 2023
Regarding the terminal localization in distributed MIMO networks, an indoor terminal localization system using a single access point (AP) based on distributed MIMO networks was proposed.Firstly, the AP’s antennas were arranged at different locations in ...
Ze LI   +3 more
doaj   +2 more sources

Capacity and coverage enhancements of MIMO WLANs in realistic environments [PDF]

open access: yes, 2006
Recently, there has been an explosion of growth in research on MIMO systems, but little has been published characterising performance in realistic environments.
Beach, MA   +5 more
core   +2 more sources

Wireless Power Transfer in Massive MIMO Aided HetNets with User Association [PDF]

open access: yes, 2016
This paper explores the potential of wireless power transfer (WPT) in massive multiple input multiple output (MIMO) aided heterogeneous networks (HetNets), where massive MIMO is applied in the macrocells, and users aim to harvest as much energy as ...
Jin, Shi   +4 more
core   +2 more sources

On the Area Energy Efficiency of Multiple Transmit Antenna Small Base Stations [PDF]

open access: yes, 2017
We analyze the area energy efficiency (AEE) of spatial multiplexing (SM) and transmit antenna selection (TAS), considering a realistic power consumption model for small base stations (BSs), which includes the power consumed by the backhaul as well as
Brante, Glauber   +5 more
core   +1 more source

Dual‐frequency DRA‐based MIMO antenna system for wireless access points

open access: yesIET Microwaves, Antennas & Propagation, 2017
An eight‐element, dual‐frequency, multiple‐input–multiple‐output (MIMO) antenna system is proposed. Cylindrical dielectric resonator antennas (cDRAs) were used as the radiating elements in the MIMO antenna system. One group of four cDRAs covers the 2.45 GHz band, whereas another four cover the second band at 5.8 GHz.
Mohammad S. Sharawi   +3 more
openaire   +1 more source

Novel antenna configurations for wireless broadband vehicular communications [PDF]

open access: yes, 2010
In this paper, mobile WiMAX trials are analysed to investigate the vehicular down-link performance for a number of on-car antenna configurations. The directionality and optimum polarization of the vehicular antennas are shown to improve both the range ...
Halls, DE, Nix, AR, Zaggoulos, G
core   +3 more sources

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