Dual-Stage Frequency Domain Blind Equalization for Long-Haul Coherent Polarization-Multiplexed QPSK and 16-QAM Systems
Chen Zhu, An V Tran, S Chen, LB Du, T Anderson, AJ Lowery, E Skafidas
2012 38TH EUROPEAN CONFERENCE AND EXHIBITION ON OPTICAL COMMUNICATIONS (ECOC) | IEEE | Published : 2012
We present a dual-stage equalization method for long-haul coherent polarization-multiplexed systems. Blind CD compensation and adaptive multi-modulus equalization are both implemented in frequency-domain to allow zero overhead transmission with least complexity. Experiment is conducted to show good performance for both QPSK and 16-QAM systems. © 2012 Optical Society of America.