Results 101 to 110 of about 10,463 (206)
Power Allocation in Cell-Free Massive MIMO: A Deep Learning Method
IEEE Access, 2020 Massive multiple-input multiple-output (MIMO) is a key technology in 5G. It enables multiple users to be served in the same time-frequency block through precoding or beamforming techniques, thus increasing capacity, reliability and energy efficiency. A key issue in massive MIMO is the allocation of power to the individual antennas, in order to achieve ...
Yu Zhao +2 more
openaire +2 more sources
Transactions on Emerging Telecommunications Technologies, Volume 36, Issue 6, June 2025.This paper explicitly reviews the state‐of‐the‐art RIS‐assisted wireless networks, especially open challenges relating to the B5G and 6G networks. This work presents an intensive study of recent research on RIS to provide an in‐depth understanding of the underlying principles surrounding RIS operations, composition, and effect on EM waves.
Chukwuemeka Nwufo +2 more
wiley +1 more source
Radio Science, Volume 60, Issue 5, May 2025.Abstract This paper introduces a Fractal Patch Antenna (FPA) integrated with Photonic Crystals (PhC) designed for Intelligent Transportation Systems (ITS) in the Millimeter‐wave bands (mmWaves) given the importance of the application of mmWaves in Vehicle‐to‐Everything (V2X) networks, we assumed, as examples, that the antenna is designed to resonate at
Nila Bagheri +2 more
wiley +1 more source
Joint User-Centric Clustering and Pilot Allocation for Scalable Cell-Free Massive MIMO System
International Journal of TechnologyCell-free massive multiple-input multiple-output (MIMO) is a promising technology where many access points (APs) cooperate to jointly serve user equipments (UEs) within the same time-frequency resource. However, the initial form of cell-free massive MIMO
Irma Zakia, Muhammad Brata
doaj +1 more source
Performance Scaling Law for Multi-Cell Multi-User Massive MIMO
, 2017 This work provides a comprehensive scaling law based performance analysis for multi-cell multi-user massive multiple-input-multiple-output (MIMO) downlink systems.
Huang, Yongming +3 more
core +1 more source
Cell-Free Massive MIMO Power Consumption with Serial Front-Hauls
TelecomMassive MIMO deployments have been traditionally based on dedicated links in the front-haul, i.e., between the central processing units and the Access Points (APs). Recently, cell-free massive Multiple-Input Multiple-Output (MIMO) systems based on serial
Danaisy Prado-Alvarez +3 more
doaj +1 more source
Cell-Free Terahertz Massive MIMO: A Novel Paradigm Beyond Ultra-Massive MIMO
2024 IEEE International Mediterranean Conference on Communications and Networking (MeditCom)The Fourth IEEE International Mediterranean Conference on Communications and Networking (IEEE MEDITCOM 2024), July 2024, Madrid ...
Jiang, Wei, Schotten, Hans D.
openaire +2 more sources
On Robustness of Massive MIMO Systems Against Passive Eavesdropping under Antenna Selection
, 2018 In massive MIMO wiretap settings, the base station can significantly suppress eavesdroppers by narrow beamforming toward legitimate terminals. Numerical investigations show that by this approach, secrecy is obtained at no significant cost.
Asaad, Saba +4 more
core +1 more source
IEEE Open Journal of the Communications SocietyCELL-FREE massive multiple-input multiple-output (MIMO) is a promising technology for next-generation communication systems. This work proposes a novel partially coherent (PC) transmission framework to cope with the challenge of phase misalignment among ...
Unnikrishnan Kunnath Ganesan +2 more
doaj +1 more source
Enhancing Coexistence in the Unlicensed Band with Massive MIMO
, 2017 We consider cellular base stations (BSs) equipped with a large number of antennas and operating in the unlicensed band. We denote such system as massive MIMO unlicensed (mMIMO-U).
Bonfante, Andrea +5 more
core +1 more source