Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
  • Journal of Lightwave Technology
  • Vol. 31,
  • Issue 15,
  • pp. 2555-2564
  • (2013)

Simple Carrier Recovery Approach for RF-Pilot-Assisted PDM-CO-OFDM Systems

Not Accessible

Your library or personal account may give you access

Abstract

For RF-pilot-assisted PDM-CO-OFDM systems, we propose and demonstrate a carrier recovery method applying a simple moving average filter (MAF) to extract the central RF-pilot for phase noise compensation. Because only two additions per output sample would be required to implement such a MAF, its computational complexity is rather simple compared to any other direct-form finite impulse response (FIR) filter. To handle its weak side-lobe attenuation, which would cause the spectrally nearby OFDM signal to interfere with the extracted pilot signal, we further propose using multiple MAFs in cascade to enhance the side-lobe attenuation. We evaluate the performance of a 16-QAM and 40-Gbps PDM-CO-OFDM signal, in terms of the bandwidth tolerance, optical signal to noise ratio (OSNR) tolerance, nonlinear tolerance, linewidth tolerance, and residual carrier frequency offset (RFO) tolerance, with different filters including the simple MAF, cascaded MAFs, and the previously-demonstrated multi-stage decimation and interpolation filter (MDIF). We've found that 1) all the filters exhibit similar performance to the ideal brick-wall filter in terms of noise and nonlinear tolerances, 2) the MAF1 exhibits the worse tolerances against linewidth and RFO, and 3) the MDIF has to be carefully designed to enhance its tolerances against both the linewidth and RFO.

© 2013 IEEE

PDF Article
More Like This
Analysis of dispersion-enhanced phase noise in CO-OFDM systems with RF-pilot phase compensation

Qunbi Zhuge, Mohamed Morsy-Osman, and David V. Plant
Opt. Express 19(24) 24030-24036 (2011)

Simple full-range carrier frequency offset estimation for high speed CO-OFDM

Hae Young Rha, Chun Ju Youn, Eun Soo Nam, and Hae-Wook Choi
Opt. Express 21(20) 23896-23906 (2013)

Per-symbol-based digital back-propagation approach for PDM-CO-OFDM transmission systems

Wei-Ren Peng, Hidenori Takahashi, Itsuro Morita, and Takehiro Tsuritani
Opt. Express 21(2) 1547-1554 (2013)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved