Results 11 to 20 of about 5,384 (187)
Fundamental Bounds on MIMO Antennas [PDF]
IEEE Antennas and Wireless Propagation Letters, 2018 Antenna current optimization is often used to analyze the optimal performance of antennas. Antenna performance can be quantified in e.g., minimum Q-factor and efficiency. The performance of MIMO antennas is more involved and, in general, a single parameter is not sufficient to quantify it.
Ehrenborg, Casimir, Gustafsson, Mats
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IET 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
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A Compact and Straightforward Self-Decoupled MIMO Antenna System for 5G Applications
IEEE Access, 2020 This study investigates a compact and straightforward self-decoupled 2 × 2 multiple-input multiple-output (MIMO) antenna set and its applications for current and future 5G terminal devices.
Haiyan Piao, Yunnan Jin, Longyue Qu
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IET Microwaves, Antennas & Propagation, 2021 A method to significantly increase the gain and isolation of a wideband multiple‐input multiple‐output (MIMO) antenna using metamaterial structures is reported.
Farzad Khajeh‐Khalili +3 more
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IEEE Access, 2020 This paper presents a twelve-port multiple-input multiple-output (MIMO) antenna system for multi-mode 4G/5G smartphone applications. Characteristic mode analysis (CMA) is used to illustrate the operation principle and optimize the geometrical structure ...
Jian Dong, Shan Wang, Jinjun Mo
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ETRI Journal, 2023 In this study, we developed a co-located and space-shared multiple-input multiple-output (MIMO) antenna module with a modular design and high integration level.
Longyue Qu, Haiyan Piao, Guohui Dong
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On the Duality between MIMO Systems with Distributed Antennas and MIMO Systems with Colocated Antennas [PDF]
EURASIP Journal on Advances in Signal Processing, 2007 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Peter A. Hoeher, Jan Mietzner
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Compact and Flexible Two-Port MIMO Antenna for UWB Wearable Applications [PDF]
EPJ Web of ConferencesThis paper is about a kind of antenna called a two-port MIMO antenna. It is designed for devices that people wear, like fitness trackers or smartwatches and it works well for communication over a wide range of frequencies from 3.5 to 11 GHz. The two-port
Tribak Abderahman +2 more
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Massive MIMO With Dual-Polarized Antennas
IEEE Transactions on Wireless Communications, 2023 This paper considers a single-cell massive MIMO (multiple-input multiple-output) system with dual-polarized antennas at both the base station and users. We study a channel model that includes the key practical aspects that arise when utilizing dual-polarization: channel cross-polar discrimination (XPD) and cross-polar correlations (XPC) at the ...
Özgecan Özdogan, Emil Björnson
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A High-Order EMSIW MIMO Antenna for Space-Constrained 5G Smartphone
Sensors, 2021 This paper proposes a high-order MIMO antenna operating at 3.5 GHz for a 5G new radio. Using an eighth-mode substrate integrated waveguide (EMSIW) cavity and considering a typical smartphone scenario, a two-element MIMO antenna is developed and extended ...
Sayyed A. Ali +3 more
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