Zobrazeno 1 - 10
of 1 448
pro vyhledávání: '"A. El Hajjar"'
Large-scale multiple-input and multiple-output (MIMO) systems are capable of achieving high date rate. However, given the high hardware cost and excessive power consumption of massive MIMO systems, as a remedy, intelligent metasurfaces have been desi
Externí odkaz:
http://arxiv.org/abs/2405.09753
In contrast to the conventional reconfigurable intelligent surfaces (RIS), intelligent omni-surfaces (IOS) are capable of full-space coverage of smart radio environments by simultaneously transmitting and reflecting the incident signals. In this pape
Externí odkaz:
http://arxiv.org/abs/2405.01167
We propose a hybrid beamforming architecture for near-field reconfigurable holographic surfaces (RHS) harnessed in cell-free networks. Specifically, the holographic beamformer of each base station (BS) is designed for maximizing the channel gain base
Externí odkaz:
http://arxiv.org/abs/2405.01150
Autor:
Li, Qingchao, El-Hajjar, Mohammed, Sun, Yanshi, Hemadeh, Ibrahim, Shojaeifard, Arman, Hanzo, Lajos
Reconfigurable holographic surfaces (RHSs) constitute a promising technique of supporting energy-efficient communications. In this paper, we formulate the energy efficiency maximization problem of the switch-controlled RHS-aided beamforming architect
Externí odkaz:
http://arxiv.org/abs/2405.01146
Autor:
Li, Qingchao, El-Hajjar, Mohammed, Sun, Yanshi, Hemadeh, Ibrahim, Tsai, Yingming, Shojaeifard, Arman, Hanzo, Lajos
An intelligent omni-surface (IOS) assisted holographic multiple-input and multiple-output architecture is conceived for $360^\circ$ full-space coverage at a low energy consumption. The theoretical ergodic rate lower bound of our non-orthogonal multip
Externí odkaz:
http://arxiv.org/abs/2405.01136
Autor:
Farzaan, Mohammed Ashfaaq M., Ghanem, Mohamed Chahine, El-Hajjar, Ayman, Ratnayake, Deepthi N.
The escalating sophistication and volume of cyber threats in cloud environments necessitate a paradigm shift in strategies. Recognising the need for an automated and precise response to cyber threats, this research explores the application of AI and
Externí odkaz:
http://arxiv.org/abs/2404.05602
The sparsity of millimeter wave (mmWave) channels in the angular and temporal domains is beneficial to channel estimation, while the associated channel parameters can be utilized for localization. However, line-of-sight (LoS) blockage poses a signifi
Externí odkaz:
http://arxiv.org/abs/2402.16129
Autor:
Li, Qingchao, El-Hajjar, Mohammed, Sun, Yanshi, Hemadeh, Ibrahim, Shojaeifard, Arman, Liu, Yuanwei, Hanzo, Lajos
Reconfigurable intelligent surfaces (RIS) are capable of beneficially ameliorating the propagation environment by appropriately controlling the passive reflecting elements. To extend the coverage area, the concept of simultaneous transmitting and ref
Externí odkaz:
http://arxiv.org/abs/2306.08438
Autor:
Georges Yared, Ali Younis, Khodor Al Hajj, Charlotte El Hajjar, Wardah Alakrah, Hamza Nakib, Christopher Massaad, Kariman Ghazal
Publikováno v:
Journal of International Medical Research, Vol 52 (2024)
Haematometra, a rare and delayed complication, can emerge following medical termination of pregnancy, also known as ‘postabortal post-caesarean syndrome’ or ‘redo syndrome’. Treatment requires the immediate evacuation of both liquid and clott
Externí odkaz:
https://doaj.org/article/fa106090e4cf4a049da36ac20a33485a
Autor:
Li, Qingchao, El-Hajjar, Mohammed, Hemadeh, Ibrahim, Shojaeifard, Arman, Mourad, Alain A. M., Hanzo, Lajos
New reconfigurable intelligent surface (RIS) based amplitude and phase modulation schemes are proposed as an evolution how the phase-only modulation schemes available in the literature. Explicitly, both the amplitude-phase shift keying (A-PSK) and qu
Externí odkaz:
http://arxiv.org/abs/2301.09717