Results 51 to 60 of about 405,425 (327)
Detect Pilot Spoofing Attack for Intelligent Reflecting Surface Assisted Systems
IEEE Access, 2021 Pilot spoofing attack (PSA) is a kind of active eavesdropping, which launches the identical training sequence to manipulate the channel estimation outcome during the pilot training phase.
Xiaoming Liu +3 more
doaj +1 more source
Intelligent Reflecting Surface Assisted Free-Space Optical Communications [PDF]
IEEE Communications Magazine, 2021 Free-space optical (FSO) systems are able to offer the high data-rate, secure, and cost-efficient communication links required for applications such as wireless front- and backhauling for 5G and 6G communication networks. Despite the substantial advancement of FSO systems over the past decades, the requirement of a line-of-sight connection between ...
Jamali, Vahid +5 more
openaire +3 more sources
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
openaire +1 more source
Compressed Channel Estimation for Intelligent Reflecting Surface-Assisted Millimeter Wave Systems
IEEE Signal Processing Letters, 2020 In this letter, we consider channel estimation for intelligent reflecting surface (IRS)-assisted millimeter wave (mmWave) systems, where an IRS is deployed to assist the data transmission from the base station (BS) to a user.
Peilan Wang +3 more
semanticscholar +1 more source
Intelligent Reflecting Surface-Aided URLLC in a Factory Automation Scenario [PDF]
IEEE Transactions on Communications, 2021 Different from conventional wired line connections, industrial control through wireless transmission is widely regarded as a promising solution due to its reduced cost, increased long-term reliability, and enhanced reliability.
Hong Ren, Kezhi Wang, Cunhua Pan
semanticscholar +1 more source
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
openaire +2 more sources
Deep Reinforcement Learning for Intelligent Reflecting Surface-assisted D2D Communications
EAI Endorsed Transactions on Industrial Networks and Intelligent Systems, 2023 In this paper, we propose a deep reinforcement learning (DRL) approach for solving the optimisation problem of the network’s sum-rate in device-to-device (D2D) communications supported by an intelligent reflecting surface (IRS).
Khoi Khac Nguyen +2 more
doaj +1 more source
On the Aperture Efficiency of Intelligent Reflecting Surfaces [PDF]
IEEE Wireless Communications Letters, 2021 The concept of intelligent reflecting surfaces (IRS) has recently gained significant attention due to their ability to manipulate the impinging electromagnetic signals and offer anomalous reflections. In this letter, we derive and address the missing piece of prior works, namely the IRS aperture efficiency .
Shih-Kai Chou +3 more
openaire +3 more sources
Enabling Large Intelligent Surfaces With Compressive Sensing and Deep Learning
IEEE Access, 2021 Employing large intelligent surfaces (LISs) is a promising solution for improving the coverage and rate of future wireless systems. These surfaces comprise massive numbers of nearly-passive elements that interact with the incident signals, for example by
Abdelrahman Taha +2 more
doaj +1 more source
Wireless Communication Aided by Intelligent Reflecting Surface: Active or Passive? [PDF]
IEEE Wireless Communications Letters, 2021 In this letter, we consider an intelligent reflecting surface (IRS)-aided wireless communication system, where an active or passive IRS is employed to assist the communication between an access point and a user.
Changsheng You, Rui Zhang
semanticscholar +1 more source