Title :
An Improved Feed-Forward Carrier Recovery Algorithm for Coherent Receivers With
-QAM Modulation Format
Author_Institution :
AT&T Labs.-Res., Middletown, NJ, USA
fDate :
7/15/2010 12:00:00 AM
Abstract :
An improved feed-forward carrier phase recovery method is proposed for coherent receivers using M-ary quadrature amplitude modulation-based modulation formats. It is shown that by introducing multiple cascaded feed-forward carrier recovery stages, the required compute power can be significantly reduced compared to the prior art using the single-stage-based blind phase search method.
Keywords :
optical modulation; optical receivers; quadrature amplitude modulation; M-ary quadrature amplitude modulation format; blind phase search method; coherent receivers; feed-forward carrier phase recovery; Coherent receiver; feed-forward; modulation format; optical; phase recovery; quadrature amplitude modulation (QAM);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2010.2049644