16QAM transmission with 5.2 bits/s/Hz spectral efficiency over transoceanic distance

We transmit 160 x 100 G PDM RZ 16 QAM channels with 5.2 bits/s/Hz spectral efficiency over 6,860 km. There are more than 3 billion 16 QAM symbols, i.e., 12 billion bits, processed in total. Using coded modulation and iterative decoding between a MAP decoder and an LDPC based FEC all channels are dec...

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Bibliographic Details
Published in:Optics express 2012-05, Vol.20 (11), p.11688-11693
Main Authors: Zhang, H, Cai, J-X, Batshon, H G, Davidson, C R, Sun, Y, Mazurczyk, M, Foursa, D G, Pilipetskii, A, Mohs, G, Bergano, Neal S
Format: Article
Language:English
Subjects:
Computer Communication Networks - instrumentation
Equipment Design
Equipment Failure Analysis
Oceans and Seas
Optical Devices
Optical Fibers
Signal Processing, Computer-Assisted - instrumentation
Telecommunications - instrumentation
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Summary:We transmit 160 x 100 G PDM RZ 16 QAM channels with 5.2 bits/s/Hz spectral efficiency over 6,860 km. There are more than 3 billion 16 QAM symbols, i.e., 12 billion bits, processed in total. Using coded modulation and iterative decoding between a MAP decoder and an LDPC based FEC all channels are decoded with no remaining errors.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.20.011688