Paper Info
Title
On the impact of carrier phase estimation on phase correlations in coherent fiber transmission
Abstract
Carrier phase estimation (CPE) is an integral part of the digital signal processing (DSP) of coherent optical communication systems as it compensates laser phase noise (LPN) introduced by free-running transmitter and local oscillating (LO) lasers. Nonlinear interactions during propagation are another source of correlated phase noise. In this paper, we show through simulations and in experiments that blind decision-directed (DD) CPE with regular block lengths removes a large portion of the memory. This makes it virtually impossible in practice to quantify correlations that come from propagation effects, or to obtain rate gains by exploiting the nonlinear phase noise (NLPN). Larger CPE block lengths leave the memory partly intact. This, however, comes at the expense of reduced information rates. We are able to fully recover this rate loss in simulations by using idealized processing of phase distortions. In experiments with full DSP, an almost full rate recovery is reported.
Year
DOI
Venue
2015
10.1109/TIWDC.2015.7323331
2015 Tyrrhenian International Workshop on Digital Communications (TIWDC)
Keywords
Field
DocType
carrier phase estimation impact,phase correlation,coherent fiber transmission,digital signal processing,coherent optical communication system,laser phase noise compensation,free-running transmitter,local oscillating laser,blind decision-directed CPE,propagation effects,phase distortion,DSP
Transmitter,Digital signal processing,Oscillation,Nonlinear system,Optical communication,Phase noise,Full Rate,Laser,Electronic engineering,Acoustics,Physics
Conference
Citations 
PageRank 
References 
0
0.34
3
Authors
5
Name
Order
Citations
PageRank
Tobias Fehenberger1528.59
Norbert Hanik25514.82
tobias a eriksson3299.21
Pontus Johannisson4347.56
Magnus Karlsson59429.55