Referenced Items are not available for this document.
In this letter, the authors 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 restrict our attention to the deployment of orthogonal space-time block codes (OSTBCs) and repetition codes both of which have been recently proposed for FSO links. Our performance analysis demonstrates that, although both schemes are able to extract full diversity, repetition codes outperform OSTBCs. The performance gap increases with the increasing number of transmit apertures. Our findings clearly point out that deployment of OSTBCs is not necessary for a FSO IM/DD link.
Published in:
Wireless Communications, IEEE Transactions on
(Volume:7
,
Issue:
11
)
Date of Publication: November 2008
- Page(s):
- 4445 - 4448
- ISSN :
- 1536-1276
- INSPEC Accession Number:
- 10348442
- Digital Object Identifier :
- 10.1109/T-WC.2008.070637
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 02 December 2008
- Issue Date :
- November 2008
- Sponsored by :
- IEEE Communications Society
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