TY - GEN
T1 - Space-time coding versus repetition coding for free-space optical communication
AU - Safari, Majid
AU - Uysal, Murat
PY - 2007
Y1 - 2007
N2 - In this paper, we investigate spatial diversity techniques for free-space optical (FSO) links with intensity modulation and direct detection (IM/DD) over log-normal atmospheric turbulence-induced fading channels. We consider the deployment of space-time block codes and repetition codes. Our performance analysis demonstrates that although both schemes are able to extract full diversity, repetition codes outperform their counterparts. The performance gap increases as the number of transmit apertures increases. Our findings clearly point out that deployment of space-time coding is not necessary for a FSO IM/DD link.
AB - In this paper, we investigate spatial diversity techniques for free-space optical (FSO) links with intensity modulation and direct detection (IM/DD) over log-normal atmospheric turbulence-induced fading channels. We consider the deployment of space-time block codes and repetition codes. Our performance analysis demonstrates that although both schemes are able to extract full diversity, repetition codes outperform their counterparts. The performance gap increases as the number of transmit apertures increases. Our findings clearly point out that deployment of space-time coding is not necessary for a FSO IM/DD link.
KW - Atmosheric turbulence
KW - Free-space optical communication
KW - Space-time coding
KW - Spatial diversity
UR - http://www.scopus.com/inward/record.url?scp=50249137188&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=50249137188&partnerID=8YFLogxK
U2 - 10.1109/ACSSC.2007.4487377
DO - 10.1109/ACSSC.2007.4487377
M3 - Conference contribution
AN - SCOPUS:50249137188
SN - 9781424421107
T3 - Conference Record - Asilomar Conference on Signals, Systems and Computers
SP - 1030
EP - 1033
BT - Conference Record of the 41st Asilomar Conference on Signals, Systems and Computers, ACSSC
T2 - 41st Asilomar Conference on Signals, Systems and Computers, ACSSC
Y2 - 4 November 2007 through 7 November 2007
ER -