Title :
Transceiver design for reliable free space optical communications
Author :
Cowley, William G. ; Lechner, Gottfried ; Biggs, Colin ; Grant, Kenneth J.
Author_Institution :
Inst. for Telecommun. Res., Univ. of South Australia, Mawson Lakes, SA, Australia
fDate :
Jan. 31 2011-Feb. 3 2011
Abstract :
Free space optical (FSO) communication offers the advantages of compact terminals and very high data rates without using scarce radio frequency spectrum. Unfortunately cloud and fog, together with scintillation caused by small temperature variations in the atmosphere, can result in significant attenuation and highly variable amplitude fluctuations that degrade link availability. This paper describes a 2 Mbit/s FSO modem and codec design, that includes a suitably large interleaver and strong channel coding scheme using a low density parity check (LDPC) code, plus synchronisation algorithms, to provide reliable communication over a 12 km optical channel.
Keywords :
channel coding; codecs; optical communication; optical transceivers; parity check codes; FSO communication; FSO modem; LDPC code; amplitude fluctuation; bit rate 2 Mbit/s; channel coding scheme; codec design; free space optical communication; low density parity check; synchronisation algorithm; temperature variation; transceiver design; AWGN; Decoding; Fading; Parity check codes; Receivers; Synchronization; Transceivers;
Conference_Titel :
Communications Theory Workshop (AusCTW), 2011 Australian
Conference_Location :
Melbourne, VIC
Print_ISBN :
978-1-4244-9714-0
DOI :
10.1109/AUSCTW.2011.5728744
