An efficient rate-adaptive transmission technique using shortened pulses for atmospheric optical communications.
In free space optical (FSO) communication, atmospheric turbulence causes fluctuation in both intensity and phase of the received light signal what may seriously impair the link performance. Additionally, turbulent inhomogeneities may produce optical pulse spreading. In this paper, a simple rate adaptive transmission technique based on the use of variable silence periods and on-off keying (OOK) formats with memory is presented. This technique was previously proposed in indoor unguided optical links by the authors with very good performance. Such transmission scheme is now extensively analyzed in terms of burst error rate, and shown in this paper as an excellent alternative compared with the classical scheme based on repetition coding and pulse-position modulation (PPM), presenting a greater robustness to adverse conditions of turbulence.
Jurado-Navas
Antonio
A
Communications Engineering Department, University of Málaga, E-29071 Málaga, Spain. navas@ic.uma.es
Garrido-Balsells
José María
JM
Castillo-Vázquez
Miguel
M
Puerta-Notario
Antonio
A
D001272:Atmosphere; D004867:Equipment Design; D005336:Fiber Optic Technology / Q000295:instrumentation*; D011674:Pulse; D012815:Signal Processing, Computer-Assisted; D013685:Telecommunications