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Created April 3, 2017

Nokia and Facebook have set new spectral efficiency and capacity records in multiple submarine field trials over a 5,500 km submarine cable between New York and Ireland. The submarine field trial of Nokia Bell Labs’ new Probabilistic Constellation Shaping (PCS) technology used shaped 64-QAM, which achieved a record spectral efficiency of 7.46 bits/s/Hz and increased the stated capacity of the system by almost 2.5 times.

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