Optimization of the joint 32/64-QAM subcarrier modulation is investigated using 3x515-Gbit/s multi-band OFDM transmission over 320-km SSMF with 50-GHz frequency grid. It is confirmed that the optimized joint 32/64-QAM with 20%-overhead FEC enables to increase OSNR sensitivity compared to 32-QAM with 7%-overhead FEC and 64-QAM with 20%-overhead FEC.
|Publication status||Published - 2012|
|Event||European Conference and Exhibition on Optical Communication, ECEOC 2012 - Amsterdam, Netherlands|
Duration: 2012 Sep 16 → 2012 Sep 20
|Other||European Conference and Exhibition on Optical Communication, ECEOC 2012|
|Period||12/9/16 → 12/9/20|
ASJC Scopus subject areas
- Computer Networks and Communications