Results 61 to 70 of about 61,754 (211)
A Design of Double Broadband MIMO Antenna
International Journal of Antennas and Propagation, 2015 The MIMO antenna applied to LTE mobile system should be miniaturization and can work in the current communication frequency band; isolation between each antenna unit also should be good so as to reduce loss of radio wave energy and improve the antenna ...
Yanfeng Geng +3 more
doaj +1 more source
Isolation Improvement of Parasitic Element-Loaded Dual-Band MIMO Antenna for Mm-Wave Applications
Micromachines, 2022 A dual-band, compact, high-gain, simple geometry, wideband antenna for 5G millimeter-wave applications at 28 and 38 GHz is proposed in this paper. Initially, an antenna operating over dual bands of 28 and 38 GHz was designed.
Musa Hussain +7 more
doaj +1 more source
User Effects in Beam-Space MIMO
, 2013 The performance and design of the novel single-RF-chain beam-space MIMO antenna concept is evaluated for the first time in the presence of the user. First, the variations of different performance parameters are evaluated when placing a beam-space MIMO ...
Najibi, Halima +2 more
core +1 more source
Portable Radar for Noncontact Heart Rate Monitoring and Estrus Detection in Dairy Cows
IEEJ Transactions on Electrical and Electronic Engineering, EarlyView.This study introduces a portable radar system for real‐time monitoring of respiratory and heart rates in dairy cows. It uses millimeter‐wave Frequency Modulated Continuous Wave (FMCW) radar to perform noncontact physiological sensing, reducing behavioral disturbance. The radar system's design prioritizes portability, cost‐effectiveness, and robustness,
Yingxiu Li +7 more
wiley +1 more source
Electronics LettersWith the accelerated deployment of 5G massive multi‐input multi‐output (MIMO)‐structured base stations (BSs), accurate and efficient testing of massive MIMO arrays is essential to ensure that the 5G massive MIMO antenna array can perform as expected. The
Xudong An +4 more
doaj +1 more source
Conjugate Gradient-based Soft-Output Detection and Precoding in Massive MIMO Systems
, 2014 Massive multiple-input multiple-output (MIMO) promises improved spectral efficiency, coverage, and range, compared to conventional (small-scale) MIMO wireless systems.
Cavallaro, Joseph R. +3 more
core +1 more source
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
openaire +2 more sources
Antipode, Volume 58, Issue 2, 2026.Abstract The paper examines the existing relationships between universities and Frontex, investigating and problematising the intersection between the higher education sector and the violence of the European border regime. We introduce the concept of positivist dissonance to conceptualise these relationships within the wider “industrial‐military ...
Giulia Corgnier +3 more
wiley +1 more source
Quad-Port Circularly Polarized MIMO Antenna with Wide Axial Ratio
Sensors, 2022 This article studies a quad-port multi-input-multi-output (MIMO) circularly polarized antenna with good isolation properties. Using characteristic mode analysis (CMA), the first six distinct modes of the asymmetric square slot with an inverted L-strip ...
Vamshi Kollipara, Samineni Peddakrishna
doaj +1 more source
Distributed User Scheduling for MIMO-Y Channel
, 2015 In this paper, distributed user scheduling schemes are proposed for the multi-user MIMO-Y channel, where three $N_{T}$-antenna users ($N_{T}=2N,\,3N$) are selected from three clusters to exchange information via an $N_{R}$-antenna amplify-and-forward (AF)
Gao, Hui +4 more
core +1 more source