Results 1 to 10 of about 511 (155)

Design and Application of Intelligent Reflecting Surface (IRS) for Beyond 5G Wireless Networks: A Review [PDF]

Sensors, 2022
The existing sub-6 GHz band is insufficient to support the bandwidth requirement of emerging data-rate-hungry applications and Internet of Things devices, requiring ultrareliable low latency communication (URLLC), thus making the migration to millimeter ...
Fred Chimzi Okogbaa, Qasim Zeeshan Ahmed, Fahd Ahmed Khan, Waqas Bin Abbas, Fuhu Che, Syed Ali Raza Zaidi, Temitope Alade   +6 more
doaj   +7 more sources

Intelligent Reflecting Surfaces (IRS)-Enhanced Cooperative NOMA: A Contemporary Review

IEEE Access
The integration of intelligent reflecting surfaces (IRS) into cooperative non-orthogonal multiple access (NOMA) systems revolutionizes wireless networks by enhancing signal strength, mitigating interference, and optimizing spectral efficiency.
Sanjeev Sharma, Amit Kumar Mishra, M. Hemant Kumar, Kuntal Deka, Vimal Bhatia   +4 more
doaj   +4 more sources

IRS-Aided Radar: Enhanced Target Parameter Estimation via Intelligent Reflecting Surfaces

2022 IEEE 12th Sensor Array and Multichannel Signal Processing Workshop (SAM), 2022
The intelligent reflecting surface (IRS) technology has recently attracted a lot of interest in wireless communications research. An IRS consists of passive reflective elements capable of tuning the phase, amplitude, frequency and polarization of the impinging waveforms.
Kumar Vijay Mishra, Mojtaba Soltanalian
exaly   +3 more sources

Intelligent reflecting surface backscatter-enabled physical layer security enhancement via deep reinforcement learning [PDF]

PeerJ Computer Science
This article introduces a novel strategy for wireless communication security utilizing intelligent reflecting surfaces (IRS). The IRS is strategically deployed to mitigate jamming attacks and eavesdropper threats while improving signal reception for ...
Manzoor Ahmed, Touseef Hussain, Muhammad Shahwar, Feroz Khan, Muhammad Sheraz, Wali Ullah Khan, Teong Chee Chuah, It Ee Lee   +7 more
doaj   +3 more sources

Multi-Intelligent Reflecting Surfaces and Artificial Noise-Assisted Cell-Free Massive MIMO Against Simultaneous Jamming and Eavesdropping [PDF]

Sensors
In a cell-free massive multiple-input multiple-output (MIMO) system without cells, it is assumed that there are smart jammers and disrupters (SJDs) that attempt to interfere with and eavesdrop on the downlink communications of legitimate users.
Huazhi Hu, Wei Xie, Kui Xu, Xiaochen Xia, Na Li, Huaiwu Wu   +5 more
doaj   +2 more sources

Performance Enhancement for B5G/6G Networks Based on Space Time Coding Schemes Assisted by Intelligent Reflecting Surfaces with Higher Modulation Orders [PDF]

Sensors
Intelligent Reflecting Surfaces (IRS) and Multiple-Input Single-Output (MISO) technologies are essential in the fifth generation (5G) networks and beyond.
Mariam El-Hussien, Bassant Abdelhamid, Hesham Elbadawy, Hadia El-Hennawy, Mehaseb Ahmed   +4 more
doaj   +2 more sources

Heterogeneous-IRS-Assisted Millimeter-Wave Systems: Element Position and Phase Shift Optimization [PDF]

Sensors
Intelligent reflecting surfaces (IRSs) have attracted extensive attention in the design of future communication networks. However, their large number of reflecting elements still results in non-negligible power consumption and hardware costs.
Weibiao Zhao, Qiucen Wu, Hao Wei, Dongliang Su, Yu Zhu   +4 more
doaj   +2 more sources

Intelligent Reflecting Surfaces Beamforming Optimization with Statistical Channel Knowledge

Sensors, 2022
Intelligent Reflecting Surfaces (IRSs) are emerging as an effective technology capable of improving the spectral and energy efficiency of future wireless networks.
Victoria Dala Pegorara Souto, Richard Demo Souza, Bartolomeu F. Uchôa-Filho, Yonghui Li   +3 more
doaj   +3 more sources

Rate splitting with semantics as a generalized multi-access framework for intelligent reflecting surfaces [PDF]

Scientific Reports
The rapid advancement of modern communication technologies necessitates the development of generalized multi-access frameworks and the continuous implementation of rate splitting, augmented with semantic awareness.
Senthil Kumar Jagatheesaperumal, Zhaohui Yang, Md. Rafiul Hassan, Mohammad Mehedi Hassan, Giancarlo Fortino   +4 more
doaj   +2 more sources

Intelligent Reflecting Surface (IRS)-Aided Covert Wireless Communications With Delay Constraint [PDF]

IEEE Transactions on Wireless Communications, 2022
This work examines the performance gain achieved by deploying an intelligent reflecting surface (IRS) in covert communications. To this end, we formulate the joint design of the transmit power and the IRS reflection coefficients by taking into account the communication covertness for the cases with global channel state information (CSI) and without a ...
Xiaobo Zhou 0004, Shihao Yan, Qingqing Wu 0001, Feng Shu 0002, Derrick Wing Kwan Ng   +4 more
openaire   +2 more sources