Zobrazeno 1 - 10
of 383
pro vyhledávání: '"Octavian Fratu"'
Autor:
Seyed Salar Sefati, Asim Ul Haq, Nidhi, Razvan Craciunescu, Simona Halunga, Albena Mihovska, Octavian Fratu
Publikováno v:
IEEE Access, Vol 12, Pp 113741-113784 (2024)
The transition to 6th Generation (6G) cellular networks offers significant improvements over 5th Generation (5G), enhancing data transfer, reducing latency, and improving network reliability. Advanced Multiple-Input Multiple-Output (MIMO) technology
Externí odkaz:
https://doaj.org/article/6678e2a73d3a4147a97a4285f176baca
Publikováno v:
IEEE Open Journal of the Communications Society, Vol 5, Pp 3151-3169 (2024)
Recently, reconfigurable intelligent surfaces (RISs) aided millimeter wave (mmWave) and terahertz (THz) communication systems have attracted interest as enablers for 5G and beyond networks. Although the static blockers’ impact can be eliminated by
Externí odkaz:
https://doaj.org/article/0fb808ab489c411cbff7736233d6d4eb
Autor:
Shaimaa Hussein Yasin, Osama A. Omer, Ahmed Mohammed Nor, Octavian Fratu, Simona Halunga, Ahmed S. Mubarak
Publikováno v:
IEEE Access, Vol 11, Pp 142652-142662 (2023)
Recently, reconfigurable intelligent surfaces (RISs) have been exhibited as a promising candidate for sixth generation (6G) wireless networks. Moreover, the concept of index modulation (IM) and its variants as spatial modulation (SM), has been adapte
Externí odkaz:
https://doaj.org/article/c125adb88c36423b9191dae21449e17c
Publikováno v:
IEEE Open Journal of the Communications Society, Vol 4, Pp 3115-3130 (2023)
In this paper, we design a positioning information (PI) based codebook (PI-CB) for reconfigurable intelligent surface (RIS) passive beamforming (PBF), in online stage. In which, corresponding to each reflection pattern (RP), the current user equipmen
Externí odkaz:
https://doaj.org/article/92946fa431f2457183072f185fcce8f8
Autor:
Bahman Arasteh, Keyvan Arasteh, Farzad Kiani, Seyed Salar Sefati, Octavian Fratu, Simona Halunga, Erfan Babaee Tirkolaee
Publikováno v:
Mathematics, Vol 12, Iss 2, p 186 (2024)
The process of software development is incomplete without software testing. Software testing expenses account for almost half of all development expenses. The automation of the testing process is seen to be a technique for reducing the cost of softwa
Externí odkaz:
https://doaj.org/article/0e9a1281c6af4564b9b1c08688858abb
Autor:
Cristian Capotă, Mădălin Popescu, Eduard-Marian Bădulă, Simona Halunga, Octavian Fratu, Mircea Popescu
Publikováno v:
Applied Sciences, Vol 13, Iss 22, p 12286 (2023)
The purpose of this study was to develop a laboratory model that enables the monitoring of communications carried out through mobile phones and their blocking in cases where it is prohibited. The main goal was to realise an intelligent jammer that bl
Externí odkaz:
https://doaj.org/article/149e8724e0074d2faf01ea2d047d23f7
Publikováno v:
Applied Sciences, Vol 13, Iss 11, p 6809 (2023)
In this article, we propose a new RIS passive beamforming scheme in two main stages. First, a fingerprint-based codebook (FP-CB) design phase occurs, where the area of interest is divided into a number of points and the optimal reflection patterns (R
Externí odkaz:
https://doaj.org/article/a78df72e9d2245e4a22217f6283f44b9
Publikováno v:
Symmetry, Vol 15, Iss 2, p 487 (2023)
One of the key issues with large distributed systems, such as IoT platforms, is gaining timely access to data objects. As a result, decreasing the operation time of reading and writing data in distributed communication systems become essential demand
Externí odkaz:
https://doaj.org/article/5ef316c32f1c46e482f2346e92a8bbca
Publikováno v:
Symmetry, Vol 14, Iss 10, p 2193 (2022)
Several use cases appear with 5G and beyond networks such as enhanced mobile broadband (eMBB), where ultra-high data rates and low-latency connections become essential demands for asymmetric services, e.g., 8K video streaming and virtual reality (VR)
Externí odkaz:
https://doaj.org/article/352e0d3360f44e119b768dc48d43c143
Publikováno v:
Sensors, Vol 22, Iss 14, p 5216 (2022)
Implementing intelligent reflecting surfaces (IRSs), in high frequency based beyond 5G networks, has become a necessity to overcome the harsh blockage issues that exist in these bands. IRSs can supply user equipment (UEs) with multi alternative virtu
Externí odkaz:
https://doaj.org/article/a55d0cbdbddd4e27bcf84de8e6a954bb