Results 71 to 80 of about 4,212 (181)

UAVs‐Assisted Low‐Bit Quantized CF‐mMIMO Systems With MmWave Communications Under MRC Detection

IET Communications, Volume 19, Issue 1, January/December 2025.
ABSTRACT The cell‐free massive multiple input multiple output (CF‐mMIMO) approach, due to its high coverage and the ability to attenuate the large‐scale fading impacts in wireless communications, has drawn a lot of attention. Additionally, because of their movement ability, low power, and low‐cost employed infrastructures, unmanned aerial vehicles ...
Sogol Moshirvaziri, Jamshid Abouei
wiley   +1 more source

Integrated Silicon Photonics Remote Radio Frontend (RRF) for Single-Sideband (SSB) Millimeter-Wave Radio-Over-Fiber (ROF) Systems

IEEE Photonics Journal, 2019
Radio-over-fiber (ROF)-based mobile fronthaul network supporting the baseband unit and simple remote radio head is a promising network architecture for future wireless networks.
Yeyu Tong, Chi-Wai Chow, Guan-Hong Chen, Ching-Wei Peng, Chien-Hung Yeh, Hon Ki Tsang   +5 more
doaj   +1 more source

Group Sparse Precoding for Cloud-RAN with Multiple User Antennas

, 2018
Cloud radio access network (C-RAN) has become a promising network architecture to support the massive data traffic in the next generation cellular networks.
Ding, Shuxue, Liu, Zhiyang, Wu, Hong, Zhao, Yingxin   +3 more
core   +2 more sources

Access Point Selection and Localization for Cluster‐Based Realization of a Device‐to‐Device Cell‐Free 6G Communications Network

IET Communications, Volume 19, Issue 1, January/December 2025.
We introduce a fully distributed framework that leverages belief‐desire‐intention extended (BDIx) agents on user devices to perform dynamic clustering and access‐point selection in a cell‐free 6G network, using both classical and deep‐learning methods for deterministic, scalable AP grouping.
Iakovos Ioannou, Marios Raspopoulos, Prabagarane Nagaradjane, Christophoros Christophorou, Andreas Gregoriades, Vasos Vassiliou   +5 more
wiley   +1 more source

Downlink Power Control for Cell‐Free Massive MIMO System With Radio Stripes

Electronics Letters, Volume 61, Issue 1, January/December 2025.
This paper investigates downlink power control in cell‐free massive multiple‐input multiple‐output systems utilizing radio stripes, a cost‐effective fronthaul topology. An AP switching technique is proposed to enhance spectral efficiency, followed by the formulation of a weighted sum‐rate maximization problem considering QoS, transmit power, and user ...
Yisong Fu, Linlin Xu, Yijie Chen, Wenchao Xia   +3 more
wiley   +1 more source

Real‐time demonstration of photonics‐based THz wireless fronthaul integrated with fiber‐optic mobile fronthaul

Microwave and Optical Technology Letters
AbstractA photonics‐based terahertz (THz) wireless fronthaul is proposed, and its feasibility is investigated by real‐time demonstration. The proposed wireless fronthaul can be simply integrated into existing fiber‐optic fronthaul, to serve as a complementary or emergency network.
Sang‐Rok Moon, Sooyeon Kim, Eon‐Sang Kim, Minkyu Sung, Seung‐Hyun Cho   +4 more
openaire   +1 more source

An improved affinity propagation method for maximising system sum rate and minimising interference for 3D multi‐UAV placement in disaster area

IET Networks, Volume 14, Issue 1, January/December 2025.
In emergency situations where ground base stations are disabled, UAVs, due to their low cost and high adaptability, restore communication coverage in remote areas. The main challenge is optimally determining the three‐dimensional positions of the UAVs to meet dynamic user demand and reduce interference.
Nooshin Boroumand Jazi, Farhad Faghani, Mahmoud Daneshvar Farzanegan   +2 more
wiley   +1 more source

IoT‐5G and B5G/6G resource allocation and network slicing orchestration using learning algorithms

IET Networks, Volume 14, Issue 1, January/December 2025.
In this article, the challenges related to the evolution of 5G and B5G/6G networks are examined more closely. The authors then primarily focus on machine learning solutions for resource allocation in 5G and B5G/6G networks. The requirements for dynamic network slicing orchestration are also analysed.
Ado Adamou Abba Ari, Faustin Samafou, Arouna Ndam Njoya, Assidé Christian Djedouboum, Moussa Aboubakar, Alidou Mohamadou   +5 more
wiley   +1 more source

Joint Weighted Dynamic Resources Optimisation in Green Open Radio Access Network

IET Networks, Volume 14, Issue 1, January/December 2025.
The paper presents an optimisation framework for the off‐grid green open radio access network architecture using renewable energy, aiming to optimise power and bandwidth allocation, ensure high data rates and improve service quality, considering factors like power consumption and maintenance cost. ABSTRACT The rapid growth of interconnected devices and
Raad S. Alhumaima, M. S. Al‐Abadi, Basit N. Khalaf, Riyadh Khlf Ahmed   +3 more
wiley   +1 more source

Quantum teleportation in higher dimension and entanglement distribution via quantum switches

IET Quantum Communication, Volume 6, Issue 1, January/December 2025.
This paper presents a novel theoretical framework for transmitting classical information through entanglement distribution of qudits over two quantum channels in a superposition of causal orders. The authors introduce the first quantum switch operation for 2‐qudit systems and a theoretical model for qudit entanglement distribution via a quantum switch.
Indrakshi Dey, Nicola Marchetti
wiley   +1 more source