Results 81 to 90 of about 65,120 (254)
Advanced Quantizer Designs for FDD-Based FD-MIMO Systems Using Uniform Planar Arrays
, 2018 Massive multiple-input multiple-output (MIMO) systems, which utilize a large number of antennas at the base station, are expected to enhance network throughput by enabling improved multiuser MIMO techniques.
Choi, Junil +3 more
core +1 more source
Advanced Materials Technologies, Volume 11, Issue 4, 19 February 2026.An LCD‐compatible complementary liquid‐crystal metasurface delivers dual‐band, dual‐polarized Ka‐band wavefront control with millisecond switching via a 10‐µm LC gap. Interlaced patch/slot pairs enable independent phase tuning at 28 and 38 GHz, while strategic 45° slot rotation suppresses parasitic resonances. Measurements on a 160 × 160‐cell prototype
Daehyeon Kim +4 more
wiley +1 more source
International Journal of Antennas and Propagation, 2020 This paper presents a compact Multiple Input Multiple Output antenna with high isolation and low envelope correlation (ECC) for fifth-generation applications using spatial diversity technique.
Doae El Hadri +4 more
doaj +1 more source
Reconfigurable Antennas in mmWave MIMO Systems
, 2017 The key obstacle to achieving the full potential of the millimeter wave (mmWave) band has been the poor propagation characteristics of wireless signals in this band.
Almasi, Mojtaba Ahmadi +4 more
core
, 2016 This paper aims at answering two fundamental questions: how area spectral efficiency (ASE) behaves with different system parameters; how to design an energy-efficient network. Based on stochastic geometry, we obtain the expression and a tight lower-bound
Chen, Zheng, Liang, Xiaowen, Qiu, Ling
core +1 more source
Advanced Science, Volume 13, Issue 7, 3 February 2026.This paper presents a programmable metasurface‐based Meta Key Distribution (MKD) system for secure, protocol‐independent key exchange in indoor wireless settings. By embedding entropy into the wireless channel, it enables lightweight, compatible cryptographic key generation.
Xinyu Li +7 more
wiley +1 more source
mmWave Massive MIMO with Simple RF and Appropriate DSP
, 2017 There is considerable interest in the combined use of millimeter-wave (mmwave) frequencies and arrays of massive numbers of antennas (massive MIMO) for next-generation wireless communications systems.
Mezghani, Amine, Swindlehurst, A. Lee
core +1 more source
International Journal of Satellite Communications and Networking, Volume 44, Issue 1, Page 17-33, January/February 2026.In this paper, we investigate the application of signal‐to‐leakage‐plus‐noise ratio (SLNR) beamforming to low Earth orbit non‐terrestrial networks. The SLNR criterion aims at maximizing the received desired signal power for each user while minimizing the overall interference power caused by each user to all other co‐channel receivers. We show that such
M. Rabih Dakkak +3 more
wiley +1 more source
Novel MIMO-SAR system applied for high-speed and high-accuracy deformation measurement
The Journal of Engineering, 2019 As a novel system, multiple-input multiple-output synthetic aperture radar (MIMO-SAR) has achieved rapid development in the past years. Based on the MIMO technique, multiple transmitting and receiving antennas could be utilised to compose a specific ...
Cheng Hu +4 more
doaj +1 more source
Phased array antennas in MIMO receiver
Journal of Telecommunications and Information Technology, 2006 In this paper, a computer simulation of a MIMO system comprising phased array antennas (PAA) in all receiving branches is presented. In order to examine the system performance under relatively realistic conditions, a ray-tracing simulator was applied to generate a baseband channel impulse response matrix H.
Sebastian Kozłowski +2 more
openaire +2 more sources