Achievable rates for four-dimensional coded modulation with a bit-wise receiver
Paper i proceeding, 2014
We study achievable rates for four-dimensional (4D) constellations for spectrally efficient optical systems based on a (suboptimal) bit-wise receiver. We show that PM-QPSK outperforms the best 4D constellation designed for uncoded transmission by approximately 1 dB. Numerical results using LDPC codes validate the analysis.
University of Cambridge
Chalmers, Signaler och system, Kommunikations- och antennsystem, Kommunikationssystem