Results 21 to 30 of about 128,430 (194)

Early Neighbor Rejection-Aided Tabu Search Detection for Large MIMO Systems

open access: yesApplied Sciences, 2021
In this study, a low complexity tabu search (TS) algorithm for multiple-input multiple-output (MIMO) systems is proposed. To reduce the computational complexity of the TS algorithm, early neighbor rejection (ENR) and layer ordering schemes are employed ...
Uzokboy Ummatov   +3 more
doaj   +1 more source

Transmit Diversity in the Downlink for the TETRA-TEDS System

open access: yesJournal of Telecommunications and Information Technology, 2014
In the paper a proposal for the improvement of performance for the TETRA Enhanced Data System (TEDS) employing transmit diversity based on two antennas in the downlink is described.
Dominik A. Rutkowski   +1 more
doaj   +1 more source

Study of Clustering Solutions for Scalable Cell-Free Massive MIMO

open access: yesIEEE Access, 2023
In response to the requirements of 5G and beyond, cell-free systems have emerged to ensure uniform service throughout the area. However, the idea of having no cells leads to a considerably large monolithic system, which is not scalable.
Danaisy Prado-Alvarez   +4 more
doaj   +1 more source

Energy‐efficient data transmission technique for wireless sensor networks based on DSC and virtual MIMO

open access: yesETRI Journal, 2020
In a wireless sensor network (WSN), the data transmission technique based on the cooperative multiple‐input multiple‐output (CMIMO) scheme reduces the energy consumption of sensor nodes quite effectively by utilizing the space‐time block coding scheme ...
Manish Kumar Singh, Syed Intekhab Amin
doaj   +1 more source

Isolation Enhancement of Wide-Band MIMO Array Antennas Utilizing Resistive Loading

open access: yesIEEE Access, 2019
In this paper, we propose the use of resistor-loaded paired parallel-coupled resonators (PCRs) for mutual coupling reduction and isolation enhancement in wideband MIMO array antennas.
Jung-Dong Park   +2 more
doaj   +1 more source

A Dual-Band Eight-Element MIMO Antenna Array for Future Ultrathin Mobile Terminals

open access: yesMicromachines, 2022
An ultrathin dual-band eight-element multiple input–multiple output (MIMO) antenna operating in fifth-generation (5G) 3.4–3.6 GHz and 4.8–5 GHz frequency bands for future ultrathin smartphones is proposed in this paper.
Chuanba Zhang   +6 more
doaj   +1 more source

Design of Wideband Decoupling Antenna Pairs for 5G Portable Devices at N77/N78/N79 Bands

open access: yesMicromachines, 2022
We proposed an antenna pair that is applicable for mobile terminals: a type of coupling feed planar antenna that has a size of 28×6 mm2, a wide band, coupling suppression and compact size.
Kaiwen Du   +3 more
doaj   +1 more source

An Energy Efficiency Maximization Scheme for the Wireless Information and Power Transfer System With MU-MIMO Uplink Access

open access: yesIEEE Access, 2018
In this paper, we consider the maximization of energy efficiency in the wireless information and power transfer system with multi-user multiple-input/multiple-output (MU-MIMO) as its uplink multiple access technique.
Su Pan   +3 more
doaj   +1 more source

On Distributed Radar Networks: Signal Model, Analysis, and Signal Processing

open access: yesIEEE Journal of Microwaves
A key aspect of the imaging capability of radar systems is the angular resolution, which is determined by the aperture size of the antenna array. Therefore technologies such as MIMO and especially radar networks consisting of multiple independent MIMO ...
Vinzenz Janoudi   +5 more
doaj   +1 more source

Perancangan Antena Mikrostrip Array Multiple Input Multiple Output (MIMO) 4 Elemen Dengan Slits dan Slots

open access: yesDinamika Rekayasa, 2022
Penelitian ini mengusulkan perancangan dan simulasi antena mikrostrip dengan metode array Multiple Input Multiple Output (MIMO) dengan 4 elemen dengan penambahan slits dan slots pada frekuensi kerja 3,5 GHz. Bahan substrat yang digunakan pada perancangan
Fahrul Solehudin   +2 more
doaj   +1 more source

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