Open AccessPath loss modeling and performance trade-off study for short-range non-line-of-sight ultraviolet communications
Author(s) -
Gang Chen,
Zhengyuan Xu,
Haipeng Ding,
Brian M. Sadler
Publication year - 2009
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.17.003929
Subject(s) - path loss , optics , non line of sight propagation , scattering , line of sight , channel (broadcasting) , transmitter , range (aeronautics) , free space optical communication , irradiance , physics , line (geometry) , bit error rate , computer science , empirical modelling , computational physics , optical communication , telecommunications , geometry , simulation , mathematics , materials science , wireless , composite material , astrophysics
We consider outdoor non-line-of-sight deep ultraviolet (UV) solar blind communications at ranges up to 100 m, with different transmitter and receiver geometries. We propose an empirical channel path loss model, and fit the model based on extensive measurements. We observe range-dependent power decay with a power exponent that varies from 0.4 to 2.4 with varying geometry. We compare with the single scattering model, and show that the single scattering assumption leads to a model that is not accurate for small apex angles. Our model is then used to study fundamental communication system performance trade-offs among transmitted optical power, range, link geometry, data rate, and bit error rate. Both weak and strong solar background radiation scenarios are considered to bound detection performance. These results provide guidelines to system design.