Title
Phase noise influence in long-range coherent optical OFDM systems with delay detection, IFFT multiplexing and FFT demodulation
Abstract
We present a study of the influence of dispersion induced phase noise for CO-OFDM systems using FFT multiplexing/IFFT demultiplexing techniques (software based). The software based system provides a method for a rigorous evaluation of the phase noise variance caused by Common Phase Error (CPE) and Inter-Carrier Interference (ICI) including - for the first time to our knowledge - in explicit form the effect of equalization enhanced phase noise (EEPN). This, in turns, leads to an analytic BER specification. Numerical results focus on a CO-OFDM system with 10-25 GS/s QPSK channel modulation. A worst case constellation configuration is identified for the phase noise influence and the resulting BER is compared to the BER of a conventional single channel QPSK system with the same capacity as the CO-OFDM implementation. Results are evaluated as a function of transmission distance. For both types of systems, the phase noise variance increases significantly with increasing transmission distance. For a total capacity of 400 (1000) Gbit/s, the transmission distance to have the BER < 10-2 for the worst case CO-OFDM design is less than 800 and 460 km, respectively, whereas for a single channel QPSK system it is less than 1400 and 560 km.
Year
DOI
Venue
2016
10.1515/joc-2012-0047
Journal of Optical Communications
Keywords
Field
DocType
coherent systems,orthogonal frequency division multiplexed systems,phase noise,rf pilot carrier,telecommunications
Demodulation,Equalization (audio),Phase noise,Communication channel,Electronic engineering,Modulation,Interference (wave propagation),Multiplexing,Mathematics,Phase-shift keying
Journal
Volume
Issue
ISSN
abs/1607.06401
4
Journal of Optical Communications, Vol.33(4), 289-295, 2012
Citations 
PageRank 
References 
5
0.51
2
Authors
5
Name
Order
Citations
PageRank
Gunnar Jacobsen13912.03
Tianhua Xu28816.35
Sergei Popov33916.08
Sergey V. Sergeyev450.51
Yimo Zhang57815.85