Zobrazeno 1 - 10
of 272
pro vyhledávání: '"free-space optical (FSO) communication"'
Publikováno v:
IEEE Open Journal of the Communications Society, Vol 5, Pp 4400-4416 (2024)
Future networks are expected to make substantial use of unmanned aerial vehicles (UAVs) as aerial base stations (BSs). The backhauling of UAVs is often considered with license-free and highbandwidth free-space optical (FSO) communication. Employing U
Externí odkaz:
https://doaj.org/article/de22f43b3968461ea91af28b2193bdc7
Publikováno v:
IEEE Photonics Journal, Vol 16, Iss 3, Pp 1-8 (2024)
Optical satellite networks (OSN) utilizing wavelength division multiplexing (WDM) inter-satellite links (ISLs) and wavelength routing is becoming a new trend in constructing high-speed, large-capacity, and low-latency global network systems. Since th
Externí odkaz:
https://doaj.org/article/e320b5751cb14f0b8dd366f53b55e941
Autor:
Mohammed Elamassie, Murat Uysal
Publikováno v:
Photonics, Vol 10, Iss 11, p 1210 (2023)
The deployment of non-terrestrial networks (NTNs) is envisioned to achieve global coverage for 6G and beyond. In addition to space nodes, aerial NTN nodes such as high-altitude platform stations (HAPSs) and rotary-wing unmanned aerial vehicles (UAVs)
Externí odkaz:
https://doaj.org/article/00a21e3777564fd38f4eceef3dccbaca
Autor:
Ashish Kant Shukla, Manav R. Bhatnagar
Publikováno v:
IEEE Photonics Journal, Vol 14, Iss 6, Pp 1-13 (2022)
In this paper, we introduce the concept of buffer-aided cooperative relaying for a free-space optical (FSO) communication system. The proposed FSO system consists of $K$ decode-and-forward(DF) relays, each equipped with a buffer of size $L$. The prop
Externí odkaz:
https://doaj.org/article/d232cca4f3bc44f9b7418c0e6912be31
Publikováno v:
Results in Engineering, Vol 17, Iss , Pp 100813- (2023)
In recent years and in the ongoing development of all-optical systems, we propose two novel hard-switching based hybrid RF-FSO system architecture in the presence of atmospheric turbulence and pointing error. In the first proposed scheme, the hybrid
Externí odkaz:
https://doaj.org/article/e63d55cb2a2b4cef98843f9795d28c0c
Publikováno v:
Photonics, Vol 10, Iss 7, p 756 (2023)
Free-space optical (FSO) communication is widely used in satellites, ships, aircraft, and ground stations due to its advantages of high speed, large capacity, good confidentiality, and strong anti-interference ability. Variable-beam divergence angle
Externí odkaz:
https://doaj.org/article/5eccea787b074cbc97e3f4dbc5e15516
Publikováno v:
IEEE Open Journal of Vehicular Technology, Vol 2, Pp 45-53 (2021)
Two emerging technologies, cognitive radio (CR) and free-space optical (FSO) communication, have created much interest both in academia and industry recently as they can fully utilize the spectrum while providing cost-efficient secure communication.
Externí odkaz:
https://doaj.org/article/3f1e2b6eba714921b2b5b09e29d67cb8
Autor:
Pranav Sharda, Manav R. Bhatnagar
Publikováno v:
IEEE Access, Vol 8, Pp 114266-114286 (2020)
The diversity-multiplexing tradeoff (DMT) in a multiple-input multiple-output (MIMO) free-space optical (FSO) communication with limited channel state information at the transmitter (CSIT) is investigated. Using the limited CSIT based power and rate
Externí odkaz:
https://doaj.org/article/c31b988965454562904809fae4e5506e
Publikováno v:
IEEE Access, Vol 8, Pp 96449-96454 (2020)
In the paper, we present and investigate an integrated wavelength-division-multiplexing (WDM) free space optical (FSO) fiber access network for 51 km long-reach connection. Here, the proposed network architecture also can mitigate Rayleigh backscatte
Externí odkaz:
https://doaj.org/article/117f37f5fecb4187b516171ec8e83d15
Autor:
Yuan Hao, Lin Zhao, Tao Huang, Yi Wu, Ting Jiang, Zhongchao Wei, Dongmei Deng, Ai-Ping Luo, Hongzhan Liu
Publikováno v:
IEEE Access, Vol 8, Pp 159542-159551 (2020)
The atmospheric turbulence (AT) causes distortion of phase fronts of orbital angular momentum (OAM) beams, which hinders the recognition of OAM modes. Convolutional neural network (CNN), a deep learning (DL) technique, can be utilized to realize the
Externí odkaz:
https://doaj.org/article/3b67a7a0ccce477896d7c7e7de660673