Free-space laser communication performance in the atmospheric channel
作者： Arun K. Majumdar
DOI: 10.1007/S10297-005-0054-0
关键词: Computation 、 Communication channel 、 Keying 、 Free-space optical communication 、 Satellite 、 Probability density function 、 Computer science 、 Link analysis 、 Electronic engineering 、 Link margin
摘要: In spite of the tremendous technical advancement available components, major limitation free-space laser communication (lasercom) performance is due to atmosphere, because a portion atmospheric path always includes turbulence and multiple scattering effects. Starting from fundamental understanding communications system under diverse weather conditions, this chapter provides comprehensive treatment evaluation parameters needed for analyzing performance. The significance higher-order statistics probability density functions irradiance fluctuations analysis explained. link analysis, necessary expressions relating margin, bit-error-rate, signal-to-noise-ratio, fade are presented. Results laboratory-simulated Example numerical results simulations lasercom systems operating various at mospheric conditions presented scenarios such as uplink-downlink (e.g., between ground satellite, aircraft or UAV) horizontal (terrestrial) link. Both effects have been included in with both on-off keying pulse-position modulation schemes. Statistical estimation computation will be useful designing optimizing that reliable all conditions.
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