Interleaved concatenated coding for the turbulent atmospheric direct detection optical communication channel

The performance of two concatenated coding systems using a K=3, R=1/2 convolutional inner code and a Reed-Solomon (RS) (15, 9) or (15, 7) outer code was measured over a 5.76-km-long atmospheric direct detection optical communication channel. Inner code interleaving of 100 mu s combined with outer co...

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Veröffentlicht in:	IEEE transactions on communications 1989-06, Vol.37 (6), p.648-651
Hauptverfasser:	Koh, Y.T., Davidson, F.
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Atmospheric measurements Coding, codes Concatenated codes Convolutional codes Decoding Error correction codes Exact sciences and technology Fading Information, signal and communications theory Interleaved codes Optical detectors Optical fiber communication Signal and communications theory Telecommunications and information theory Viterbi algorithm
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Zusammenfassung:	The performance of two concatenated coding systems using a K=3, R=1/2 convolutional inner code and a Reed-Solomon (RS) (15, 9) or (15, 7) outer code was measured over a 5.76-km-long atmospheric direct detection optical communication channel. Inner code interleaving of 100 mu s combined with outer code interleaving of 240 bits (60 RS symbols) was found to be sufficient to obtain a decoded BER of less than 10/sup -6/ under conditions of moderate channel turbulence and an average of 6-10 detected photons per channel bit.< >
ISSN:	0090-6778 1558-0857
DOI:	10.1109/26.31150