Abstract
Tropospheric molecular and particle scattering in ultraviolet (UV) scattering wavelengths enable non-line-of-sight (NLOS) communication which brings robustness to blockage or shadowing. NLOS communication is particularly desirable to relax or eliminate pointing, acquisition and tracking requirements. NLOS-UV links can be used as an alternative to outdoor infrared or visible light links or in combination with existing optical or radiofrequency wireless links. Analytical, experimental and numerical approaches have been used to determine the NLOS-UV channel impulse response and path loss. These studies demonstrate that UV channel is of multipath nature due to the volumetric scattering due to air molecules, aerosols and hydrometeors. Besides inter-symbol interference and bandwidth limitation resulting from frequency-dispersive nature of NLOS-UV channel, performances may be also degraded by high path losses and turbulence-induced fading as the link range increases. This chapter provides an overview of latest advances in NLOS-UV channel modeling and results.
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Abbreviations
- APD:
-
Avalanche Photodiode
- BER:
-
Bit Error Rate
- FOV:
-
Field-of-View
- FEC:
-
Forward Error Correction
- FMC:
-
Forward MC
- IRF:
-
Impulse Response Function
- ISI:
-
Inter-Symbol Interference
- LEDs:
-
Light-Emitting Diodes
- LOS:
-
Line-of-Sight
- MC:
-
Monte Carlo
- MPPM:
-
Multi-pulse PPM
- NLOS:
-
Non-Line-of-Sight
- OOK:
-
On-Off-Keying
- PSD:
-
Particle Size Distribution
- PMTs:
-
Photomultiplier Tubes
- PDFs:
-
Probability Distribution Functions
- PPM:
-
Pulse-Position Modulation
- RTE:
-
Radiative Transfer Equation
- RX:
-
Receiver
- SG:
-
Scaled Gamma
- TX:
-
Transmitter
- UV:
-
ultraviolet
- UVC:
-
UV Communications
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Mori, S., Marzano, F.S. (2016). Ultraviolet Scattering Communication Channels. In: Uysal, M., Capsoni, C., Ghassemlooy, Z., Boucouvalas, A., Udvary, E. (eds) Optical Wireless Communications. Signals and Communication Technology. Springer, Cham. https://doi.org/10.1007/978-3-319-30201-0_8
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