Title :
Airborne Laser Communications with Impulse Response Shortening and Viterbi Decoding
Author :
Lee, Sangwoo ; Kavehrad, Mohsen
Author_Institution :
Dept. of Electr. Eng., Pennsylvania State Univ., University Park, PA
Abstract :
This paper is about signal processing schemes for airborne free-space optical wireless communications through cloud. FSO channel is known to be accompanied by multiscattering, which causes severe intersymbol interference. Unlike traditional FSO with optical signal processing, this research will study feasibility of RF signal processing schemes applied to FSO. By employing a channel shortening equalizer followed by a maximum likelihood sequential detector, reliable communication at low-to-mid level optical thickness values is shown to be feasible
Keywords :
Viterbi decoding; equalisers; intersymbol interference; maximum likelihood detection; optical links; radiocommunication; transient response; FSO channel; RF signal processing scheme; Viterbi decoding; airborne laser communication; channel shortening equalizer; free-space optical wireless communication; impulse response; intersymbol interference; maximum likelihood sequential detector; multiscattering; Clouds; Decoding; Intersymbol interference; Light scattering; Mie scattering; Optical propagation; Optical scattering; Optical signal processing; Particle scattering; Viterbi algorithm; FSO; MMSE; MSSNRn; Viterbi; channel shortening equalizer; free-space optics;
Conference_Titel :
Military Communications Conference, 2006. MILCOM 2006. IEEE
Conference_Location :
Washington, DC
Print_ISBN :
1-4244-0617-X
Electronic_ISBN :
1-4244-0618-8
DOI :
10.1109/MILCOM.2006.302393
