Results 91 to 100 of about 10,463 (206)
Engineering Reports, Volume 7, Issue 10, October 2025.A novel MIMO antenna for 5G applications is proposed, achieving a wide bandwidth of 4.12 GHz, high gain of 8.8 dB, and an efficiency of 99.72%. The antenna's performance is validated through CST simulation, measurement, RLC circuit modeling, and machine learning‐based prediction, with Nonparametric Regression showing superior accuracy.
Md. Ashraful Haque +8 more
wiley +1 more source
Supporting UAV Cellular Communications through Massive MIMO
, 2018 In this article, we provide a much-needed study of UAV cellular communications, focusing on the rates achievable for the UAV downlink command and control (C&C) channel.
Björnson, Emil +4 more
core +1 more source
MathematicsCell-free massive multiple-input multiple-output (MIMO) networks eliminate cell boundaries and enhance uniform quality of service by enabling cooperative transmission among access points (APs). In conventional cellular networks, user equipment located at
Yoon-Ju Choi +8 more
doaj +1 more source
Physical Layer Security for Massive MIMO Systems Impaired by Phase Noise
, 2016 In this paper, we investigate the impact of phase noise on the secrecy performance of downlink massive MIMO systems in the presence of a passive multiple-antenna eavesdropper.
Bhargava, Vijay K. +2 more
core +1 more source
Advanced Photonics Research, Volume 6, Issue 7, July 2025.Optical wireless communications (OWCs) provide a promising alternative to spectrum‐congested microwave wireless communications. Recently, the use of metasurfaces with sub‐wavelength features for dynamic beam steering, beam manipulation, and spatial or optical‐angular‐momentum mode generation, conversion, and multiplexing in OWCs is proposed and ...
Ke Wang +7 more
wiley +1 more source
Transactions on Emerging Telecommunications Technologies, Volume 36, Issue 7, July 2025.We introduce a novel model of an IRS‐assisted MU‐MISO‐OFDMA system. We aim to jointly optimize beamforming vectors, IRS reflection coefficients, and OFDM subcarrier allocation to maximize the overall sum rate. ABSTRACT In this article, we propose a novel resource allocation strategy for multiuser multiple‐input single‐output orthogonal frequency ...
Binh‐Minh Vu, Oh‐Soon Shin
wiley +1 more source
Cell-Free Massive MIMO: A New Next-Generation Paradigm
IEEE Access, 2019 Cell-free (CF) massive multiple-input-multiple-output (MIMO) systems have a large number of individually controllable antennas distributed over a wide area for simultaneously serving a small number of user equipments (UEs).
Jiayi Zhang +5 more
doaj +1 more source
Uplink Spectral Efficiency of Massive MIMO with Spatially Correlated Rician Fading
, 2018 This paper considers the uplink (UL) of a multi-cell Massive MIMO (multiple-input multiple-output) system with spatially correlated Rician fading channels.
Björnson, Emil +2 more
core +1 more source
A Review of Modeling and Control Techniques for Unmanned Aerial Vehicles
Engineering Reports, Volume 7, Issue 6, June 2025.By systematically classifying UAV modeling techniques and comparing control methods, this paper addresses a notable gap in the current literature. Furthermore, it highlights emerging trends and challenges in UAV control systems, providing valuable insights to guide future research toward enhancing the stability, efficiency, and adaptability of ...
Elisabeth Andarge Gedefaw +2 more
wiley +1 more source
Flexible Pilot Contamination Mitigation with Doppler PSD Alignment
, 2016 Pilot contamination in the uplink (UL) can severely degrade the channel estimation quality at the base station (BS) in a massive multi-input multi-output (MIMO) system.
Luo, Xiliang, Zhang, Xiaoyu
core +1 more source