Title :
Experimental evaluation of LDPC-coded OAM based FSO communication in the presence of atmospheric turbulence
Author :
Zhen Qu;Ivan B. Djordjevic
Author_Institution :
Department of Electrical and Computer Engineering, University of Arizona, 1230 E. Speedway Blvd., Tucson, 85721, USA
Abstract :
A low-density parity check (LDPC)-coded orbital angular momentum (OAM)-based free-space optical (FSO) transmission system is experimentally studied in both the absence and presence of emulator-induced atmospheric turbulence. In the presence of turbulence, the coding gains larger than 6.8 dB are obtained at BER of 10-4 for single OAM mode and dramatic improvement is found in case of LDPC-coded OAM multiplexing of states ±2, ±5 as uncoded case enters into an early error floor phenomenon.
Keywords :
"Multiplexing","Laser beams","Optical beams","Parity check codes","Modulation","Optical fibers","Optical polarization"
Conference_Titel :
Telecommunication in Modern Satellite, Cable and Broadcasting Services (TELSIKS), 2015 12th International Conference on
Print_ISBN :
978-1-4673-7515-3
DOI :
10.1109/TELSKS.2015.7357751
