Results 21 to 30 of about 6,983 (148)

Joint Hybrid Backhaul and Access Links Design in Cloud-Radio Access Networks [PDF]

open access: yes, 2015
The cloud-radio access network (CRAN) is expected to be the core network architecture for next generation mobile radio systems. In this paper, we consider the downlink of a CRAN formed of one central processor (the cloud) and several base-station (BS ...
Al-Naffouri, Tareq Y.   +3 more
core   +2 more sources

Exploring Coordinated Multipoint Beamforming Strategies for 5G Cellular

open access: yesIEEE Access, 2014
Cellular networks are a central part of today's communication infrastructure. The global roll-out of 4G long-term evolution is underway, ideally enabling ubiquitous broadband Internet access.
Stefan Schwarz, Markus Rupp
doaj   +1 more source

Joint RRH Activation and Robust Coordinated Beamforming for Massive MIMO Heterogeneous Cloud Radio Access Networks

open access: yesIEEE Access, 2018
Heterogeneous cloud radio access networks (H-CRANs), proposed to boost both spectral and energy efficiency while reducing the signaling overhead, have been regarded as a promising paradigm for fifth-generation wireless communication systems.
Kai Zhang   +5 more
doaj   +1 more source

Multi-cell downlink coordinated beam forming algorithm based on fairness duality theory

open access: yesTongxin xuebao, 2013
With the goal to optimize the multi-cell downlink beamforming based on the criterion of the worst-user rate maximization,the Lagrangian duality theory was first used to derive a virtual multi-cell uplink optimization problem that was dual to the primal ...
Shi-wen HE, Yong-ming HUANG, Lv-xi YANG
doaj   +2 more sources

A survey and tutorial of electromagnetic radiation and reduction in mobile communication systems [PDF]

open access: yes, 2015
This paper provides a survey and tutorial of electromagnetic (EM) radiation exposure and reduction in mobile communication systems. EM radiation exposure has received a fair share of interest in the literature; however, this work is one of the first to ...
Heliot, Fabien   +2 more
core   +1 more source

Joint association and beamforming optimization in reconfigurable intelligent surface-enhanced user-centric networks

open access: yesIntelligent and Converged Networks, 2022
Fully coordinated Cell-Free (CF) networks can alleviate the Inter-Cell Interference (ICI) for the cell-edge users in cellular networks. Due to the complex topology of the association between the Access Points (APs) and the users in CF networks, it is ...
Ye Yao   +4 more
doaj   +1 more source

Large System Analysis of Base Station Cooperation for Power Minimization [PDF]

open access: yes, 2015
This work focuses on a large-scale multi-cell multi-user MIMO system in which $L$ base stations (BSs) of $N$ antennas each communicate with $K$ single-antenna user equipments.
Couillet, Romain   +2 more
core   +8 more sources

Low-Complexity Coordinated Beamforming for Full Duplex MIMO Wireless Cellulars

open access: yesIEEE Access, 2018
In this paper, we consider a full duplex (FD) MIMO multi-cell system, where each FD base station (BS) with multiple antennas serves multiple single-antenna user equipments (UEs) with half-duplex radios. Advancement in interference management is in demand
Ming Zou, Jinghuan Ma, Bingli Jiao
doaj   +1 more source

Coordinated Beamforming with Relaxed Zero Forcing: The Sequential Orthogonal Projection Combining Method and Rate Control

open access: yes, 2012
In this paper, coordinated beamforming based on relaxed zero forcing (RZF) for K transmitter-receiver pair multiple-input single-output (MISO) and multiple-input multiple-output (MIMO) interference channels is considered.
Lee, Gilwon   +3 more
core   +1 more source

Energy-Efficient Coordinated Multi-Cell Multigroup Multicast Beamforming with Antenna Selection

open access: yes, 2017
This paper studies energy-efficient coordinated beamforming in multi-cell multi-user multigroup multicast multiple-input single-output systems. We aim at maximizing the network energy efficiency by taking into account the fact that some of the radio ...
Chatzinotas, Symeon   +5 more
core   +1 more source

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