Results 21 to 30 of about 7,875,182 (223)
Tikrit Journal of Engineering Sciences, 2021 The future wireless communication requires a reliable transmission at high data rates, so the transmission over frequency-selective fading Multiple-Input–Multiple-Output MIMO channels become interesting since the capacity of "MIMO" channels expressions ...
Maha Monther Shahab +2 more
doaj +1 more source
Block diagonalisation-based multiuser multiple input multiple output-aided downlink relaying [PDF]
, 2012 A novel block diagonalisation (BD)-based Multiuser multiple input multiple output (MU-MIMO)-aided relaying scheme is proposed for downlink transmissions, which does not require any channel state information at the base station (BS) and decomposes a MU ...
Li, C. +3 more
core +1 more source
Early Neighbor Rejection-Aided Tabu Search Detection for Large MIMO Systems
Applied 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
Initial and Post-Initial Code Acquisition in the Non-Coherent Multiple Input/Multiple Output Aided DS-CDMA Downlink [PDF]
, 2008 In this paper, we investigate the issues of both initial and post-initial acquisition schemes in the multiple-input/multiple-output (MIMO)-aided direct-sequence code-division multiple-access (DS-CDMA) downlink when communicating over spatially ...
Won, Seung, Won, SeungHwan, Hanzo, Lajos
core +1 more source
Design of Wideband Decoupling Antenna Pairs for 5G Portable Devices at N77/N78/N79 Bands
Micromachines, 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
Compact wideband MIMO diversity antenna for mobile applications using multi-layered structure [PDF]
, 2020 A closely packed wideband multiple-input multiple-output (MIMO)/diversity antenna (of two ports) with a small size of less than 18.5 mm by 18.5 mm is proposed for mobile communication applications.
Ali, Nazar +15 more
core +1 more source
Isolation Enhancement of Wide-Band MIMO Array Antennas Utilizing Resistive Loading
IEEE 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
Analysis and Design of Channel Estimation in Multicell Multiuser MIMO OFDM Systems [PDF]
, 2014 This paper investigates the uplink transmission in multicell multiuser multiple-input multiple-output (MIMO) orthogonal frequency-division multiplexing (OFDM) systems. The system model considers imperfect channel estimation, pilot contamination (PC), and
Xu, Peng +3 more
core +1 more source
A Dual-Band Eight-Element MIMO Antenna Array for Future Ultrathin Mobile Terminals
Micromachines, 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
Micromachines, 2021 In this paper, a compact planar dual-band multiple-input and multiple-output (MIMO) antenna with high isolation is presented to satisfy the increasing requirements of wireless communication.
Rong Yang +5 more
doaj +1 more source