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

fYear

2011

fDate

Jan. 31 2011-Feb. 3 2011

Firstpage

94

Lastpage

99

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications Theory Workshop (AusCTW), 2011 Australian

Conference_Location

Melbourne, VIC

Print_ISBN

978-1-4244-9714-0

Type

conf

DOI

10.1109/AUSCTW.2011.5728744

Filename

5728744