Nokia breaks capacity records using Facebook submarine cable

Nokia has shocked the world once again, breaking the capacity record over Facebook’s 5500 km submarine cable between New York and Ireland.
Using Nokia Bell Labs’ probabilistic constellation shaping (PCS) technology, the pair achieved spectral efficiency of 7.46 b/s/Hz and increased the stated capacity of the system by almost 2.5 times. If that wasn’t enough, hold onto the edge of your seat, because the 11000 km round trip submarine transmission achieved a record spectral effici