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2016
Conference Paper
Titel
Four-dimensional trellis coded modulation for flexible optical transponders
Abstract
We experimentally demonstrate 4-D TCM based on PDM-16QAM, PDM-32QAM and PDM-64QAM formats. A multi-rate optical transponder is enabled by only a single encoder/decoder structure. The scheme is resilient to cycle-slip events due to its 90° phase rotation invariant property.