Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Haitham S. Khallaf"'
Publikováno v:
IEEE Access, Vol 9, Pp 159652-159671 (2021)
In this paper, we propose a novel approach to establish a reliable high-speed broadcast communication link between a group of autonomous underwater vehicles (AUVs) swarm under-sea ice. We utilize the fact that sea ice exists above the AUVs to diffuse
Externí odkaz:
https://doaj.org/article/d51b8287031343ec9df40744a231810c
Autor:
Ehab Mahmoud Mohamed, Basem M. Elhalawany, Haitham S. Khallaf, Mahdi Zareei, Asim Zeb, Mahmoud Ahmed Abdelghany
Publikováno v:
IEEE Access, Vol 8, Pp 30560-30574 (2020)
The communications in the millimeter wave (mmWave) band, e.g., WiGig (60 GHz), is considered as one of the main components of 5G and beyond 5G (B5G) networks. However, it is characterized by short range transmissions along with high susceptibility to
Externí odkaz:
https://doaj.org/article/4d73054ed1fc4af394bdebbf9084df1e
Publikováno v:
2022 10th International Japan-Africa Conference on Electronics, Communications, and Computations (JAC-ECC).
Autor:
Haitham S. Khallaf, Halim Yanikomeroglu, Sadiq M. Sait, Kazutoshi Kato, Ehab Mahmoud Mohamed, Murat Uysal
Publikováno v:
IEEE Wireless Communications Letters. 10:1295-1299
In this letter, we introduce accurate approximation expressions for composite fading channel model and outage probability of multiple-input multiple-output (MIMO) free space optical (FSO) link between two unmanned aerial vehicles (UAVs) in hovering s
Autor:
Basem M. ElHalawany, Ehab Mahmoud Mohamed, M. A. Abdelghany, Asim Zeb, Haitham S. Khallaf, Mahdi Zareei
Publikováno v:
IEEE Access, Vol 8, Pp 30560-30574 (2020)
The communications in the millimeter wave (mmWave) band, e.g., WiGig (60 GHz), is considered as one of the main components of 5G and beyond 5G (B5G) networks. However, it is characterized by short range transmissions along with high susceptibility to
Autor:
Hossam M. H. Shalaby, Haitham S. Khallaf, Salah S. A. Obayya, Salem F. Hegazy, Abdulaziz E. Elfiqi, Amr Elsonbaty
Publikováno v:
IEEE Transactions on Wireless Communications. 18:4225-4237
In this paper, we present a polarization-assisted $L$ -ary differential phase-shift keying multipulse pulse-position modulation (PA. $L$ DPSK-MPPM) technique that is secured in the physical layer by a discrete-chaos system. The all-optical PA. $L$ DP
Publikováno v:
ICC
Relaying is a key technology for millimeter wave communications to extend the range and to route around blockages. In practical implementation of relaying systems, probing is required to identify proper neighbor terminals which will serve as relays.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0c2babb52cdc0c69bc2cdcf5796d3321
Autor:
Abdallah S. Ghazy, Abd El-Rahman A. El-Fikky, Ehab Mahmoud Mohamed, Hossam M. H. Shalaby, Moustafa H. Aly, Haitham S. Khallaf
Publikováno v:
Applied optics. 59(7)
In this paper, we introduce the idea of using adaptive hybrid modulation techniques to overcome channel fading effects on visible light communication (VLC) systems. A hybrid M -ary quadrature-amplitude modulation ( M Q A M ) and multipulse pulse-posi
Autor:
Hossam M. H. Shalaby, Haitham S. Khallaf, Ahmed E. Morra, Abdulaziz E. Elfiqi, Steve Hranilovic
Publikováno v:
Applied optics. 58(36)
A hybrid optical modulation approach is described, which layers a continuous wave $M$M-ary differential phase-shift keying ($M{\rm DPSK}$MDPSK) and a two-level ($2L$2L) multipulse pulse-position modulation (MPPM) intensity-modulated signal for improv
Autor:
Abdulaziz E. Elfiqi, Salah S. A. Obayya, Seiichi Sampei, Haitham S. Khallaf, Hossam M. H. Shalaby
Publikováno v:
Optics Communications. 416:41-49
We investigate the performance of hybrid L -ary quadrature-amplitude modulation-multi-pulse pulse-position modulation ( L QAM-MPPM) techniques over exponentiated Weibull (EW) fading free-space optical (FSO) channel, considering both weather and point