Results 31 to 40 of about 60,314 (279)
On Half-Power Beamwidth of Intelligent Reflecting Surface [PDF]
IEEE Communications Letters, 2021 Half-power beamwidth (HPBW) is a key parameter to measure the performance of antenna array and the newly proposed intelligent reflecting surface (IRS) systems. In this paper, we first establish a system model for IRS in uniform linear array (ULA) and uniform rectangular array (URA) configurations, then the IRS HPBW in both cases are derived under the ...
Han Han, Yihong Liu, Lei Zhang
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Paladyn, 2023 With proper tuning in the phase shift of reconfigurable intelligent surfaces (RISs) or intelligent reflecting surfaces (IRSs), which consist of huge number of passive reflecting elements, are the most promising and transforming technology to reconfigure ...
Singh Ashish K. +4 more
doaj +1 more source
Spectral and Energy Efficiency of IRS-Assisted MISO Communication with Hardware Impairments [PDF]
, 2020 In this letter, we analyze the spectral and energy efficiency of an intelligent reflecting surface (IRS)-assisted multiple-input single-output (MISO) downlink system with hardware impairments.
Alouini, Mohamed-Slim +4 more
core +4 more sources
Intelligent Reflecting Surface-Aided Wireless Communications: A Tutorial [PDF]
IEEE Transactions on Communications, 2021 Intelligent reflecting surface (IRS) is an enabling technology to engineer the radio signal prorogation in wireless networks. By smartly tuning the signal reflection via a large number of low-cost passive reflecting elements, IRS is capable of dynamically altering wireless channels to enhance the communication performance.
Qingqing Wu +4 more
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Visible Light Communications via Intelligent Reflecting Surfaces: Metasurfaces vs Mirror Arrays
IEEE Open Journal of the Communications Society, 2021 We propose two types of intelligent reflecting systems based on programmable metasurfaces and mirrors to focus the incident optical power towards a visible light communication receiver.
Amr M. Abdelhady +4 more
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Intelligent reflecting surface‐aided network planning
IET Communications, 2022 Abstract Intelligent reflecting surface (IRS) composed of a large number of low‐cost, phase‐adjustable passive reflecting elements, which is an attractive solution of overcoming the signal attenuation and interference. IRS can be used as a low‐power passive system with signal enhancement and interference suppression.
Fan‐Hsun Tseng +3 more
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SWIPT With Intelligent Reflecting Surfaces Under Spatial Correlation [PDF]
IEEE Wireless Communications Letters, 2021 Intelligent reflecting surfaces (IRSs) can be beneficial to both information and energy transfer, due to the gains achieved by their multiple elements. In this work, we deal with the impact of spatial correlation between the IRS elements, in the context of simultaneous wireless information and power transfer.
Constantinos Psomas, Ioannis Krikidis
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Towards automated visual flexible endoscope navigation [PDF]
, 2013 Background:\ud The design of flexible endoscopes has not changed significantly in the past 50 years. A trend is observed towards a wider application of flexible endoscopes with an increasing role in complex intraluminal therapeutic procedures.
Broeders, I.A.M.J. +2 more
core +3 more sources
Intelligent Reflecting Surface-Aided Backscatter Communications [PDF]
GLOBECOM 2020 - 2020 IEEE Global Communications Conference, 2020 6 pages, 4 figures; to appear in Globecom ...
Jia, Xiaolun +3 more
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Improving the Capacity of NOMA Network Using Multiple Aerial Intelligent Reflecting Surfaces
IEEE Access, 2023 In this paper, we propose to utilize multiple aerial intelligent reflecting surfaces (AIRSs) for significantly enhancing the ergodic capacity of a non-orthogonal multiple access (NOMA) network. Unlike previous works where only one AIRS was often utilized
Le Si Phu +6 more
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