Zobrazeno 1 - 10
of 47
pro vyhledávání: '"Fatma Newagy"'
Publikováno v:
ICT Express, Vol 5, Iss 1, Pp 41-46 (2019)
Filter Bank Multicarrier with Offset Quadrature Amplitude Modulation (FBMC/OQAM) is one of the best waveforms used in 5G communications. The FBMC is a multicarrier modulation system (MCM) which suffers from high peak to average power ratio (PAPR) cau
Externí odkaz:
https://doaj.org/article/8c0a5b9c62054320a70470300ba0b3b7
Publikováno v:
IEEE Access, Vol 7, Pp 147010-147020 (2019)
Radio wave propagation can be characterized by two major sets: empirical and deterministic models. Empirical models rely on the received signals' statistics and thus offer lower precision. Deterministic models have certain physical bases and therefor
Externí odkaz:
https://doaj.org/article/04950cb08d664f4cb45e3722aef76ff9
Publikováno v:
Applied Sciences, Vol 12, Iss 11, p 5421 (2022)
The motivations for deploying energy and spectral-efficient network architectures are the high energy consumption and the need for more spectral resources in modern cellular networks. The key method to solve the energy efficiency EE maximization prob
Externí odkaz:
https://doaj.org/article/66394fbfc1604fbfb3923628ec7b2341
Publikováno v:
Sensors, Vol 22, Iss 4, p 1566 (2022)
One of the main targets of future 5G cellular networks is enlarging the Internet of Things (IoT) devices’ connectivity while facing the challenging requirements of the available bandwidth, power and the restricted delay limits. Unmanned aerial vehi
Externí odkaz:
https://doaj.org/article/0b78f4ee7e4a49149e3d9250df9ad130
Autor:
Fatma Newagy
Publikováno v:
IEEE Access, Vol 4, Pp 6733-6738 (2016)
Energy-efficiency is a significant parameter contributing to the performance of coordinated cognitive radio networks (CCRNs). To estimate the average value of sensing and reporting energy efficiency of CCRN, a new metric is proposed. This paper prese
Externí odkaz:
https://doaj.org/article/adce4028899d404c85240a053342f05c
Autor:
Ali Refaai, Fatma Newagy, Mohamed Fathy Abo Sree, Moustafa H. Aly, Hadia Elhennawy, Mohamed Abaza
Publikováno v:
Optical and Quantum Electronics. 55
Optical space communication as a relay satellite system has been employed. The use of laser satellite communication (SatCom) can alleviate the issues that RF satellite communication encounters. In this study, channel turbulence, additional technologi
Autor:
Ali Refaai, Mohamed Fathi Abo Sree, Fatma Newagy, Moustafa H. Aly, Hadia Elhennawy, Mohamed Abaza
Publikováno v:
Optics & Laser Technology. 161:109110
Publikováno v:
2022 IEEE International Conference on Design & Test of Integrated Micro & Nano-Systems (DTS).
Publikováno v:
IET Communications. 14:1016-1021
A new analytical model of air-to-ground (A2G) channel between a low altitude unmanned aerial vehicle (UAV) and a mobile station is derived. It is proposed for the dense urban environment at frequencies of (1, 2 and 5.8) GHz. The model terms are deter
Publikováno v:
IET Communications. 13:3588-3594
In a multiple-input multiple-output (MIMO) cognitive radio network, the cognitive users (CUs) coexist with the primary users (PUs) in the same spectrum for boosting the spectrum efficiency. Based on the informed limit of the interference power from t