DocumentCode
3642815
Title
Investigation of punctured LDPC codes and time-diversity on free-space optical links
Author
Martin Czaputa;Tomaž Javornik;Erich Leitgeb;Gorazd Kandus;Zabih Ghassemlooy
Author_Institution
Institute of Broadband Communications, Graz University of Technology, Austria
fYear
2011
fDate
6/1/2011 12:00:00 AM
Firstpage
359
Lastpage
362
Abstract
In this paper, we analyze the behavior of DVB-S2 un-punctured/punctured low-density parity-check (LDPC) coded on-off-keying (OOK) under atmospheric turbulence conditions by utilizing time diversity. A performance characterization between these schemes is evaluated, where punctured LDPC code provides a penalty of around 0.1 to 0.2 dB against unpunctured LDPC codes but still provides a coding gain of several dB against uncoded OOK. The combination of channel coding and a bit interleaver results in performance improvements in turbulence conditions. For example, such a system can achieve a coding gain of 16.7 dB in moderate turbulence conditions compared to uncoded OOK.
Keywords
"Parity check codes","Encoding","Digital video broadcasting","Bit error rate","Adaptive optics","Optical fiber communication","Optical receivers"
Publisher
ieee
Conference_Titel
Telecommunications (ConTEL), Proceedings of the 2011 11th International Conference on
Print_ISBN
978-1-61284-169-4
Type
conf
Filename
5969958
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