Abstract

The vulnerable sensitivity to laser linewidth induced inter-carrier interference (ICI) has long been recognized as a major problem to coherent optical orthogonal frequency-division multiplexing (CO-OFDM) systems. Among the existing phase noise compensation algorithms, the RF-pilot aided phase recovery (RAPR) method shows a better compensation capability to laser linewidth. However, RAPR may fail to extract the pre-inserted RF-pilot at the receiver due to the influence of carrier frequency offset (CFO). An effective frequency offset estimation (FOE) is thus required to implement before performing RAPR. In consideration of the fact that the conventional FOE algorithm not only has high computational complexity, but more importantly cannot work in coordination with RAPR, a new RF-pilot aided frequency offset estimation (RAFOE) algorithm is proposed, in which CFO can be easily estimated by searching the peak of spectral samples. Furthermore, in order to obtain the optimum compensation performance with lower computing cost at combining RAFOE and RAPR, a joint frequency offset and phase noise compensation scheme is also proposed, and its performance is numerically verified in a 475 Gbit/s polarization multiplexed 16-ary quadrature amplitude modulation coherent optical orthogonal frequency-division multiplexing (PM-16QAM- CO-OFDM) system.

© 2013 IEEE

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  1. Y. Tang, W. Shieh, "Coherent optical OFDM transmission up to 1 Tb/s per channel," J. Lightw. Technol. 27, 3511-3517 (2009).
  2. W. Shieh, H. Bao, Y. Tang, "Coherent optical OFDM: Theory and design," Opt. Exp. 16, 841-859 (2008).
  3. C. J. Youn, X. Liu, S. Chandrasekhar, Y. H. Kwon, J. H. Kim, J. S. Choe, D. J. Kim, K. S. Choi, E. S. Nam, "Channel estimation and synchronization for polarization-division multiplexed CO-OFDM using subcarrier/polarization interleaved training symbols," Opt. Exp. 19, 16174-16181 (2011).
  4. A. Barbieri, G. Colavolpe, T. Foggi, E. Forestieri, G. Prati, "OFDM versus single-carrier transmission for 100 Gbps optical communication," J. Lightw. Technol. 28, 2537-2551 (2010).
  5. X. W. Yi, W. Shieh, Y. Tang, "Phase estimation for coherent optical OFDM," IEEE Photon. Technol. Lett. 19, 919-921 (2007).
  6. X. Liu, S. Chandrasekhar, B. Y. Zhu, P. J. Winzer, A. H. Gnauck, D. W. Peckham, "448-Gb/s reduced-guard-interval CO-OFDM transmission over 2000 km of ultra-large-area fiber and five 80-GHz-grid ROADMs," J. Lightw. Technol. 29, 483-490 (2011).
  7. M. E. Mousa-Pasandi, Q. Zhuge, X. Xu, M. M. Osman, M. Chagnon, D. V. Plant, "Experimental study of a novel adaptive decision-directed channel equalizer in 28 GBaud RGI-DP-CO-OFDM transport systems," Opt. Exp. 20, 17017-17028 (2012).
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  10. S. L. Jansen, I. Morita, N. Takeda, H. Tanaka, "20-Gb/s OFDM transmission over 4160-km SSMF enabled by RF-pilot tone phase noise compensation," Proc. Opt. Fiber Commun. Conf. (2007) Paper PDP 15..
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  13. Z. Zhang, W. Jiang, H. Zhou, Y. Liu, J. Gao, "High accuracy frequency offset correction with adjustable acquisition range in OFDM systems," IEEE Trans. Wireless Commun. 4, 228-237 (2005).
  14. F. Yang, Z. Zhang, Y. Chen, "Maximal-likelihood estimator for coarse carrier frequency offset estimation in OFDM systems," Wireless. Pers. Commun. 49, 55-66 (2009).
  15. S. L. Jansen, I. Morita, T. C. W. Schenk, H. Tanaka, "Long-haul transmission of 16 × 51.5 Gbits/s polarization-division-multiplexed OFDM enabled by MIMO processing," J. Opt. Netw. 7, 173-182 (2008).
  16. X. Zhou, K. P. Long, R. Li, X. L. Yang, Z. S. Zhang, "A simple and efficient frequency offset estimation algorithm for high-speed coherent optical OFDM systems," Opt. Exp. 20, 7350-7361 (2012).

2012 (2)

M. E. Mousa-Pasandi, Q. Zhuge, X. Xu, M. M. Osman, M. Chagnon, D. V. Plant, "Experimental study of a novel adaptive decision-directed channel equalizer in 28 GBaud RGI-DP-CO-OFDM transport systems," Opt. Exp. 20, 17017-17028 (2012).

X. Zhou, K. P. Long, R. Li, X. L. Yang, Z. S. Zhang, "A simple and efficient frequency offset estimation algorithm for high-speed coherent optical OFDM systems," Opt. Exp. 20, 7350-7361 (2012).

2011 (2)

X. Liu, S. Chandrasekhar, B. Y. Zhu, P. J. Winzer, A. H. Gnauck, D. W. Peckham, "448-Gb/s reduced-guard-interval CO-OFDM transmission over 2000 km of ultra-large-area fiber and five 80-GHz-grid ROADMs," J. Lightw. Technol. 29, 483-490 (2011).

C. J. Youn, X. Liu, S. Chandrasekhar, Y. H. Kwon, J. H. Kim, J. S. Choe, D. J. Kim, K. S. Choi, E. S. Nam, "Channel estimation and synchronization for polarization-division multiplexed CO-OFDM using subcarrier/polarization interleaved training symbols," Opt. Exp. 19, 16174-16181 (2011).

2010 (2)

A. Barbieri, G. Colavolpe, T. Foggi, E. Forestieri, G. Prati, "OFDM versus single-carrier transmission for 100 Gbps optical communication," J. Lightw. Technol. 28, 2537-2551 (2010).

S. Randel, S. Adhikari, S. L. Jansen, "Analysis of RF-Pilot-based phase noise for coherent optical OFDM systems," IEEE Photon. Technol. Lett. 22, 1288-1290 (2010).

2009 (2)

Y. Tang, W. Shieh, "Coherent optical OFDM transmission up to 1 Tb/s per channel," J. Lightw. Technol. 27, 3511-3517 (2009).

F. Yang, Z. Zhang, Y. Chen, "Maximal-likelihood estimator for coarse carrier frequency offset estimation in OFDM systems," Wireless. Pers. Commun. 49, 55-66 (2009).

2008 (3)

S. L. Jansen, I. Morita, T. C. W. Schenk, H. Tanaka, "Long-haul transmission of 16 × 51.5 Gbits/s polarization-division-multiplexed OFDM enabled by MIMO processing," J. Opt. Netw. 7, 173-182 (2008).

W. Shieh, H. Bao, Y. Tang, "Coherent optical OFDM: Theory and design," Opt. Exp. 16, 841-859 (2008).

S. L. Jansen, I. Morita, T. C. W. Schenk, N. Takeda, H. Tanaka, "Coherent optical 25.8-Gb/s OFDM transmission over 4160-km SSMF," J. Lightw. Technol. 26, 6-15 (2008).

2007 (1)

X. W. Yi, W. Shieh, Y. Tang, "Phase estimation for coherent optical OFDM," IEEE Photon. Technol. Lett. 19, 919-921 (2007).

2005 (1)

Z. Zhang, W. Jiang, H. Zhou, Y. Liu, J. Gao, "High accuracy frequency offset correction with adjustable acquisition range in OFDM systems," IEEE Trans. Wireless Commun. 4, 228-237 (2005).

1997 (1)

T. M. Schmidl, D. C. Cox, "Robust frequency and timing synchronization for OFDM," IEEE Trans. Commun. 45, 1613-1621 (1997).

IEEE Photon. Technol. Lett. (1)

S. Randel, S. Adhikari, S. L. Jansen, "Analysis of RF-Pilot-based phase noise for coherent optical OFDM systems," IEEE Photon. Technol. Lett. 22, 1288-1290 (2010).

IEEE Photon. Technol. Lett. (1)

X. W. Yi, W. Shieh, Y. Tang, "Phase estimation for coherent optical OFDM," IEEE Photon. Technol. Lett. 19, 919-921 (2007).

IEEE Trans. Commun. (1)

T. M. Schmidl, D. C. Cox, "Robust frequency and timing synchronization for OFDM," IEEE Trans. Commun. 45, 1613-1621 (1997).

IEEE Trans. Wireless Commun. (1)

Z. Zhang, W. Jiang, H. Zhou, Y. Liu, J. Gao, "High accuracy frequency offset correction with adjustable acquisition range in OFDM systems," IEEE Trans. Wireless Commun. 4, 228-237 (2005).

J. Lightw. Technol. (1)

S. L. Jansen, I. Morita, T. C. W. Schenk, N. Takeda, H. Tanaka, "Coherent optical 25.8-Gb/s OFDM transmission over 4160-km SSMF," J. Lightw. Technol. 26, 6-15 (2008).

J. Lightw. Technol. (3)

A. Barbieri, G. Colavolpe, T. Foggi, E. Forestieri, G. Prati, "OFDM versus single-carrier transmission for 100 Gbps optical communication," J. Lightw. Technol. 28, 2537-2551 (2010).

X. Liu, S. Chandrasekhar, B. Y. Zhu, P. J. Winzer, A. H. Gnauck, D. W. Peckham, "448-Gb/s reduced-guard-interval CO-OFDM transmission over 2000 km of ultra-large-area fiber and five 80-GHz-grid ROADMs," J. Lightw. Technol. 29, 483-490 (2011).

Y. Tang, W. Shieh, "Coherent optical OFDM transmission up to 1 Tb/s per channel," J. Lightw. Technol. 27, 3511-3517 (2009).

J. Opt. Netw. (1)

Opt. Exp. (4)

X. Zhou, K. P. Long, R. Li, X. L. Yang, Z. S. Zhang, "A simple and efficient frequency offset estimation algorithm for high-speed coherent optical OFDM systems," Opt. Exp. 20, 7350-7361 (2012).

W. Shieh, H. Bao, Y. Tang, "Coherent optical OFDM: Theory and design," Opt. Exp. 16, 841-859 (2008).

C. J. Youn, X. Liu, S. Chandrasekhar, Y. H. Kwon, J. H. Kim, J. S. Choe, D. J. Kim, K. S. Choi, E. S. Nam, "Channel estimation and synchronization for polarization-division multiplexed CO-OFDM using subcarrier/polarization interleaved training symbols," Opt. Exp. 19, 16174-16181 (2011).

M. E. Mousa-Pasandi, Q. Zhuge, X. Xu, M. M. Osman, M. Chagnon, D. V. Plant, "Experimental study of a novel adaptive decision-directed channel equalizer in 28 GBaud RGI-DP-CO-OFDM transport systems," Opt. Exp. 20, 17017-17028 (2012).

Wireless. Pers. Commun. (1)

F. Yang, Z. Zhang, Y. Chen, "Maximal-likelihood estimator for coarse carrier frequency offset estimation in OFDM systems," Wireless. Pers. Commun. 49, 55-66 (2009).

Other (2)

S. L. Jansen, I. Morita, N. Takeda, H. Tanaka, "20-Gb/s OFDM transmission over 4160-km SSMF enabled by RF-pilot tone phase noise compensation," Proc. Opt. Fiber Commun. Conf. (2007) Paper PDP 15..

Optical Internetworking ForumIntegrable Tunable Laser Assembly MSA, OIF-ITLA-MSA-01.1 (2005).

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