Results 61 to 70 of about 6,983 (148)
A Hybrid Approach to Spatial Multiplexing in Multiuser MIMO Downlinks
EURASIP Journal on Wireless Communications and Networking, 2004 In the downlink of a multiuser multiple-input multiple-output (MIMO) communication system, simultaneous transmission to several users requires joint optimization of the transmitted signals. Allowing all users to have multiple antennas adds an additional
Spencer Quentin H., Swindlehurst A. Lee
doaj +2 more sources
Reliable Positioning and mmWave Communication via Multi-Point Connectivity
Sensors, 2018 One of the key elements of future 5G and beyond mobile technology is millimeter-wave (mmWave) communications, which is targeted to extreme high-data rate services.
Dileep Kumar +4 more
doaj +1 more source
Resource Management for Collaborative 5G-NR-V2X RSUs to Enhance V2I/N Link Reliability
Sensors, 2023 In the development of autonomous driving technology, 5G-NR vehicle-to-everything (V2X) technology is a key technology that enhances safety and enables effective management of traffic information.
SangHoon An, KyungHi Chang
doaj +1 more source
Advanced Coordinated Beamforming for the Downlink of Future LTE Cellular Networks
, 2016 Modern cellular networks in traditional frequency bands are notoriously interference-limited especially in urban areas, where base stations are deployed in close proximity to one another.
Alexandropoulos, George C. +3 more
core +3 more sources
Dynamic Multifunctional Metasurfaces Based on Passive Cascade Structure
Electron, EarlyView.A dynamic multifunctional metasurface is proposed in this paper. Unlike mainstream multifunctional metasurface based on programmable metasurfaces, it consists of two passive metasurfaces, presenting a significant cost advantage. By controlling the displacement, different functions such as beam steering, focusing, and OAM wave generation can be realized
Xiangming Wu +5 more
wiley +1 more source
Distributed Beamforming Coordination in Multicell MIMO Channels
VTC Spring 2009 - IEEE 69th Vehicular Technology Conference, 2009 Coordination in a multi-cell/link environment has been attracting a lot of attention in the research community recently. In this paper, we consider the problem of coordinated beamforming where base stations (BS) equipped with multiple antennas attempt to serve a separate user each despite the interference generated by the other bases.
Randa Zakhour +2 more
openaire +3 more sources
Research on Spectrum Sharing Mechanism of 5G Large Scale MIMO Networks Based on SDN [PDF]
Jisuanji gongcheng, 2018 In the user-dense region,the traditional gNB beamforming technology can not solve the serious problem of co-channel interference between networks.Therefore,a unified and coordinated management method for Software Defined Network(SDN) spectrum is proposed.
LIU Taotao,YU Zhong,WANG Junxuan,YANG Peng
doaj +1 more source
Coordinated beamforming for the multi-cell multi-antenna wireless system [PDF]
2008 42nd Annual Conference on Information Sciences and Systems, 2008 In a conventional wireless cellular system, signal processing is performed on a per-cell basis; out-of-cell interference is treated as background noise. This paper considers the benefit of coordinating base-stations across multiple cells in a multi-antenna beamforming system, where multiple base-stations may jointly optimize their respective ...
Hayssam Dahrouj, Wei Yu
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Review of millimeter‐wave and terahertz near‐field synthetic aperture radar imaging technology
InfoScience, EarlyView.Abstract This paper comprehensively reviews the development of millimeter‐wave (MMW) and terahertz (THz) near‐field imaging technologies, with an emphasis on the state of synthetic aperture radar (SAR)‐based imaging technologies. Near‐field imaging technologies are categorized into passive and active imaging modes, among which active imaging is favored
Qi Yang +3 more
wiley +1 more source
Coordinated Multicell Beamforming for Massive MIMO: A Random Matrix Approach [PDF]
IEEE Transactions on Information Theory, 2015 We consider the problem of coordinated multi- cell downlink beamforming in massive multiple input multiple output (MIMO) systems consisting of N cells, Nt antennas per base station (BS) and K user terminals (UTs) per cell. Specifically, we formulate a multi-cell beamforming algorithm for massive MIMO systems which requires limited amount of information
Lakshminarayana, Subhash +2 more
openaire +3 more sources