Atmospheric Optical Communication System Using Subcarrier PSK Modulation

摘要

Atmospheric optical communication(AOC)system using subcarrier PSK is proposed and its superiority to OOK in the presence of scintillation is discussed theoretically.An experimental AOC setup using a subcarrier modulated by 155.52Mb/s DPSK at light wavelength λ=0.83μm over an 1.8km outdoor path is employed to show the performance.Theoretical and experimental results are compared under scintillation in clear weather and a good agreement is observed.BER in kinds of weather is also given.Finally,AOC using subcamier M-ary PSK and multiple subcarriers is discussed.