Zobrazeno 1 - 10
of 13
pro vyhledávání: '"George K. Varotsos"'
Publikováno v:
Energies, Vol 16, Iss 18, p 6485 (2023)
In recent years, the tremendous increase in data traffic carried by wireless communication networks has generated the urgent need for establishing more energy-efficient wireless communication systems. Recent advances in semiconductor and light device
Externí odkaz:
https://doaj.org/article/5bbba1334d084a3097263d2f25a14918
Autor:
Nikoleta Vitsi, Argyris N. Stassinakis, Nikolaos A. Androutsos, George D. Roumelas, George K. Varotsos, Konstantinos Aidinis, Hector E. Nistazakis
Publikováno v:
Computation, Vol 11, Iss 8, p 161 (2023)
Visible light positioning systems (VLP) have attracted significant commercial and research interest because of the many advantages they possess over other applications such as radio frequency (RF) positioning systems. In this work, an experimental co
Externí odkaz:
https://doaj.org/article/d526e6dfc2054d6297e9ce0b2ae9a0cc
Autor:
George K. Varotsos, Hector E. Nistazakis, Konstantinos Aidinis, Fadi Jaber, Mohd Nasor, Kanhira Kadavath Mujeeb Rahman
Publikováno v:
Telecom, Vol 2, Iss 2, Pp 167-180 (2021)
Recent developments in both optical wireless communication (OWC) systems and implanted medical devices (IMDs) have introduced transdermal optical wireless (TOW) technology as a viable candidate for extremely high-speed in-body to out-of-body wireless
Externí odkaz:
https://doaj.org/article/26ddfeb72e7e4b3e9fa304a836bb3b84
Publikováno v:
Photonics, Vol 9, Iss 10, p 671 (2022)
In recent years, the THz frequency band (0.3 THz–10 THz) has attracted an increasing research interest for the realization of emerging high-speed wireless communication links. Nevertheless, the propagation of THz signals through the atmospheric cha
Externí odkaz:
https://doaj.org/article/8a614d86c37e4702bcc5924100e3fe3b
Publikováno v:
Photonics, Vol 8, Iss 12, p 553 (2021)
The tremendous development of both optical wireless communications (OWC) and implantable medical devices (IMDs) has recently enabled the establishment of transdermal optical wireless (TOW) links that utilize light waves to transfer information inside
Externí odkaz:
https://doaj.org/article/b3532eebeb49410c8a1b1cb43ef50e55
Autor:
George K. Varotsos, Hector E. Nistazakis, Konstantinos Aidinis, Fadi Jaber, K. K. Mujeeb Rahman
Publikováno v:
Technologies, Vol 8, Iss 4, p 60 (2020)
Transdermal optical wireless (TOW) communication links have recently gained particular research and commercial attention as a viable alternative for establishing high speed and effective implantable data transmissions, which is vital for a variety of
Externí odkaz:
https://doaj.org/article/3ff5b796fe584c048720788eab395958
Autor:
George D. Roumelas, Hector E. Nistazakis, Argyris N. Stassinakis, George K. Varotsos, Andreas D. Tsigopoulos, George S. Tombras
Publikováno v:
Technologies, Vol 8, Iss 1, p 3 (2019)
The performance of an underwater optical wireless communication link is investigated by taking into account—for the first time and to the best of our knowledge—the simultaneous influence of the chromatic dispersion, the time jitter and the turbul
Externí odkaz:
https://doaj.org/article/4b0fd38087664af8a3174435e38b303e
Publikováno v:
Computation, Vol 7, Iss 3, p 33 (2019)
The last few years, the scientific field of optical wireless communications (OWC) has witnessed tremendous progress, as reflected in the continuous emergence of new successful high data rate services and variable sophisticated applications. One such
Externí odkaz:
https://doaj.org/article/2035a41c2dca4bc9bdd59717eca98e42
Autor:
George K. Varotsos, Hector E. Nistazakis, Argyris N. Stassinakis, Christos K. Volos, Vasileios Christofilakis, George S. Tombras
Publikováno v:
Technologies, Vol 6, Iss 4, p 121 (2018)
This study investigated the outage performance of a terrestrial FSO communication system that uses mixed series and parallel decode-and-forward (DF) relay-assisted (i.e., cooperative diversity) configurations, taking into account the influence of bot
Externí odkaz:
https://doaj.org/article/b8c4689143a94f2b9e382afdb865f291
Autor:
George K. Varotsos, Hector E. Nistazakis, Wilfried Gappmair, Harilaos G. Sandalidis, George S. Tombras
Publikováno v:
Applied Sciences, Vol 8, Iss 5, p 664 (2018)
Subcarrier free-space optical (FSO) systems using coherent recovery techniques at the receiver have acquired growing research interest in recent times. However, their optimal performance is diminished by the non-perfect synchronization of carrier fre
Externí odkaz:
https://doaj.org/article/a3994801970e412f927c7d0ec309c26d