Results 91 to 100 of about 20,641 (239)
IEEE Transactions on Communications, 2023 Integrating reconfigurable intelligent surface (RIS) into cell-free massive multiple-input multiple-output (MIMO) is a promising approach to enhance the coverage quality, spectral efficiency (SE), and energy efficiency.
Yao Zhang +5 more
semanticscholar +1 more source
Symbol‐Level GRAND‐Assisted Detection for Polar‐Coded Spatial Modulation in MIMO Systems
International Journal of Communication Systems, Volume 39, Issue 7, 10 May 2026.This research presents an integrated polar‐coded spatial modulation (PCSM) transceiver scheme for MIMO transmission over Rayleigh fading channels. The proposed architecture employs linear spatial signal processing for antenna and symbol estimation, followed by symbol‐level guessing random additive noise decoding (symbol‐level GRAND)–assisted detection ...
Abhilasha Gautam +2 more
wiley +1 more source
On the Performance Gain of NOMA over OMA in Uplink Communication Systems
, 2019 In this paper, we investigate and reveal the ergodic sum-rate gain (ESG) of non-orthogonal multiple access (NOMA) over orthogonal multiple access (OMA) in uplink cellular communication systems. A base station equipped with a single-antenna, with multiple
Hanzo, Lajos +4 more
core +1 more source
Energy-Efficient NOMA Enabled Heterogeneous Cloud Radio Access Networks [PDF]
, 2018 Heterogeneous cloud radio access networks (H-CRANs) are envisioned to be promising in the fifth generation (5G) wireless networks. H-CRANs enable users to enjoy diverse services with high energy efficiency, high spectral efficiency, and low-cost ...
Hu, Rose Qingyang +4 more
core +2 more sources
Taxonomy of IMT Interference on Aeronautical Systems
Radio Science, Volume 61, Issue 4, April 2026.Abstract The rapid deployment of 5G and future 6G networks has raised concerns about interference with critical aeronautical systems, particularly radio altimeters and Wireless Avionics Intra‐Communications (WAIC). This paper offers a comprehensive taxonomy of the 5G/6G signal interference mechanisms, operational impacts, and mitigation strategies in ...
Valéria C. M. N. Leite, Alison Moraes
wiley +1 more source
Study of Clustering Solutions for Scalable Cell-Free Massive MIMO
IEEE Access, 2023 In response to the requirements of 5G and beyond, cell-free systems have emerged to ensure uniform service throughout the area. However, the idea of having no cells leads to a considerably large monolithic system, which is not scalable.
Danaisy Prado-Alvarez +4 more
doaj +1 more source
, 2015 A subspace method for channel estimation has been recently proposed [1] for tackling the pilot contamination effect, which is regarded by some researchers as a bottleneck in massive MIMO systems.
Gesbert, David +3 more
core +1 more source
Massive MIMO Multicasting in Noncooperative Cellular Networks [PDF]
, 2014 We study the massive multiple-input multiple-output (MIMO) multicast transmission in cellular networks where each base station (BS) is equipped with a large-scale antenna array and transmits a common message using a single beamformer to multiple mobile ...
Meixia Tao +3 more
core +1 more source
Engineered Optical Fibers for Deep‐Tissue Applications
Advanced Optical Materials, Volume 14, Issue 10, 13 March 2026.This review establishes a foundational framework for designing optical fibers for deep‐tissue medicine. It systematically links material innovations like polymers and hydrogels with structural paradigms to enable state‐of‐the‐art diagnostics, including endoscopy and biosensing, and targeted therapeutics, guiding future clinical translation.
Yuzhen Li +16 more
wiley +1 more source
Scalable Cell-Free Massive MIMO Networks With LEO Satellite Support
IEEE Access, 2022 This paper presents an integrated network architecture combining a cell-free massive multiple-input multiple-output (CF-M-MIMO) terrestrial layout with a low Earth orbit satellite segment where the scalability of the terrestrial segment is taken into ...
Felip Riera-Palou +4 more
doaj +1 more source