Title :
Multilevel coding in free-space optical MIMO transmission with Q-ary PPM over the atmospheric turbulence channel
Author :
Djordjevic, Ivan B. ; Vasic, Bane ; Neifeld, Mark A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Arizona Univ., Tucson, AZ, USA
fDate :
7/1/2006 12:00:00 AM
Abstract :
We propose an efficient coded modulation scheme for multiple input/multiple output free-space optical systems with Q-ary pulse-position modulation. It is based on multilevel coding and low-density parity-check codes as component codes. The proposed scheme provides excellent coding gain in the regime of strong atmospheric turbulence.
Keywords :
MIMO systems; atmospheric optics; atmospheric turbulence; optical communication; optical modulation; parity check codes; MIMO transmission; Q-ary pulse-position modulation; atmospheric turbulence channel; coded modulation; coding gain; free-space optical communication systems; free-space optical transmission; low-density parity-check codes; multilevel coding; multiple input/multiple output optical systems; MIMO; Modulation coding; Optical attenuators; Optical modulation; Optical pulses; Optical receivers; Optical transmitters; Parity check codes; Pulse modulation; Radio frequency; Atmospheric turbulence channel; free-space optics; multilevel coding (MLC); multiple input/multiple output (MIMO) processing; pulse-position modulation (PPM);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2006.877576
