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- Title
A full duplex LG modes enabled millimeter-wave based FSO communication system for disaster zone.
- Authors
Iqbal, Saeed; Raza, Aadil; Kaleem, Mohammad; Iqbal, Muhammad; Adeel, Muhammad; Ghafoor, Salman
- Abstract
Free space optical (FSO) communication is a wireless alternative to fiber-based communication as it may provide a backbone emergency communication link in disaster-hit areas. This paper proposes a full duplex millimeter wave (mm-wave) enabled FSO system to provide a high data rate communication link for search and rescue operations. The proposed system consists of a central unit which is connected to multiple unmanned aerial vehicles (UAVs) through an optical-amplify and forward relay over an FSO channel represented by Log-Normal channel model. An optical comb is generated and Laguerre-Gaussian modes of each wavelength of the optical comb are exploited to carry 10 Gbps differential phase shift keying modulated signals. 60 GHz mm-wave signals are generated at the remote UAVs by employing optical heterodyne detection for downlink transmission towards the user equipment. For the uplink transmission, a dedicated wavelength is used to carry 10 Gbps on-off keying baseband data for live streaming of the disaster-hit area. Furthermore, a single hop scheme is employed to counter the non-line of sight issue of the FSO link. The performance of the proposed model is evaluated under different weather conditions and refractive index structure parameter values. A maximum distance of 3.3 km is achieved for clear sky under low turbulence conditions. Moreover, the effect of misalignment due to hovering of the UAVs on the system performance is also investigated and tolerance in the x (horizontal) and y (vertical) directions is observed at the forward error correction BER limit of 10 - 9 . The simulation results reveal that the proposed system has the potential to provide reliable and quick emergency communication services in disaster-struck areas.
- Subjects
DIFFERENTIAL phase shift keying; TELECOMMUNICATION systems; FORWARD error correction; SEARCH &; rescue operations; HETERODYNE detection; EMERGENCY communication systems; MOBILE communication systems; FREE-space optical technology
- Publication
Wireless Networks (10220038), 2024, Vol 30, Issue 2, p961
- ISSN
1022-0038
- Publication type
Article
- DOI
10.1007/s11276-023-03526-y