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Journal of Optical Communications and Networking

Journal of Optical Communications and Networking

  • Editors: O. Gerstel and P. Iannone
  • Vol. 6, Iss. 4 — Apr. 1, 2014
  • pp: 397–407

Improved Energy Efficiency for Optical Transport Networks by Elastic Forward Error Correction

Anders Rasmussen, Metodi P. Yankov, Michael S. Berger, Knud J. Larsen, and Sarah Ruepp  »View Author Affiliations


Journal of Optical Communications and Networking, Vol. 6, Issue 4, pp. 397-407 (2014)
http://dx.doi.org/10.1364/JOCN.6.000397


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Abstract

In this paper we propose a scheme for reducing the energy consumption of optical links by means of adaptive forward error correction (FEC). The scheme works by performing on the fly adjustments to the code rate of the FEC, adding extra parity bits to the data stream whenever extra capacity is available. We show that this additional parity information decreases the number of necessary decoding iterations and thus reduces the power consumption in iterative decoders during periods of low load. The code rate adjustments can be done on a frame-by-frame basis and thus make it possible to manipulate the balance between effective data rate and FEC coding gain without any disruption to the live traffic. As a consequence, these automatic adjustments can be performed very often based on the current traffic demand and bit error rate performance of the links through the network. The FEC scheme itself is designed to work as a transparent add-on to transceivers running the optical transport network (OTN) protocol, adding an extra layer of elastic soft-decision FEC to the built-in hard-decision FEC implemented in OTN, while retaining interoperability with existing OTN equipment. In order to facilitate dynamic code rate adaptation, we propose a programmable encoder and decoder design approach, which can implement various codes depending on the desired code rate using the same basic circuitry. This design ensures optimal coding gain performance with a modest overhead for supporting multiple codes with minimal impact on the area and power requirements of the decoder.

© 2014 Optical Society of America

OCIS Codes
(060.4510) Fiber optics and optical communications : Optical communications
(350.0350) Other areas of optics : Other areas of optics
(060.4256) Fiber optics and optical communications : Networks, network optimization
(060.4259) Fiber optics and optical communications : Networks, packet-switched

ToC Category:
Research Papers

History
Original Manuscript: October 3, 2013
Revised Manuscript: January 20, 2014
Manuscript Accepted: February 10, 2014
Published: March 26, 2014

Citation
Anders Rasmussen, Metodi P. Yankov, Michael S. Berger, Knud J. Larsen, and Sarah Ruepp, "Improved Energy Efficiency for Optical Transport Networks by Elastic Forward Error Correction," J. Opt. Commun. Netw. 6, 397-407 (2014)
http://www.opticsinfobase.org/jocn/abstract.cfm?URI=jocn-6-4-397


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References

  1. A. F. Molisch, Wireless Communications. Wiley, 2005.
  2. J. G. Proakis and M. Salehi, Communication Systems Engineering. Prentice Hall, 1994.
  3. F. Vacondio, O. Rival, Y. Pointurier, C. Simonneau, L. Lorcy, J. Antona, and S. Bigo, “Coherent receiver enabling data rate adaptive optical packet networks,” in European Conf. and Expo. on Optical Communications (ECOC), 2011, pp. 6–8.
  4. F. Vacondio, C. Simonneau, A. Voicila, E. Dutisseuil, J. M. Tanguy, J. C. Antona, G. Charlet, and S. Bigo, “Real time implementation of packet-by-packet polarization demultiplexing in a 28 Gb/s burst mode coherent receiver,” in Optical Fiber Communication Conf., 2012, pp. 57–59.
  5. O. Gerstel and M. Jinno, “Elastic optical networking: A new dawn for the optical layer?” IEEE Commun. Mag., vol.  50, no. 2, pp. s12–s20, Feb.2012. [CrossRef]
  6. “Interfaces for the optical transport network (OTN),” , Feb. 2001.
  7. G.-H. Gho, L. Klak, and J. M. Kahn, “Rate-adaptive coding for optical fiber transmission systems,” J. Lightwave Technol., vol.  29, no. 2, pp. 222–233, 2011. [CrossRef]
  8. G.-H. Gho and J. M. Kahn, “Rate-adaptive modulation and low-density parity-check coding for optical fiber transmission systems,” J. Opt. Commun. Netw., vol.  4, no. 10, pp. 760–768, Sept. 2012. [CrossRef]
  9. C. Dorize, O. Rival, and C. Costantini, “Power scaling of LDPC decoder stage in long haul networks,” in Photonics in Switching, 2012, pp. 2–4.
  10. D. J. C. MacKay, “Good error-correcting codes based on very sparse matrices,” IEEE Trans. Inf. Theory, vol.  45, no. 2, pp. 399–431, Mar. 1999. [CrossRef]
  11. S. Lin and D. Costello, Error Control Coding, 2nd ed. Pearson Prentice Hall, 2004.
  12. Y. Miyata, W. Matsumoto, H. Yoshida, T. Mizuochi, and P. Ber, “Efficient FEC for optical communications using concatenated codes to combat error-floor,” in Optical Fiber Communication Conf. and the Nat. Fiber Optic Engineers Conf. (OFC/NFOEC), 2008, pp. 11–13.
  13. A. J. Felstrom and K. S. Zigangirov, “Time-varying periodic convolutional codes with low-density parity-check matrix,” IEEE Trans. Inf. Theory, vol.  45, no. 6, pp. 2181–2191, 1999. [CrossRef]
  14. A. E. Pusane, A. Jim, A. Sridharan, M. Lentmaier, K. S. Zigangirov, and D. J. Costello, “Implementation aspects of LDPC convolutional codes,” IEEE Trans. Commun., vol.  56, no. 7, pp. 1060–1069, 2008. [CrossRef]
  15. D. Ma and R. Bondade, “Enabling power-efficient DVFS operations on silicon,” IEEE Circuits Syst. Mag., vol.  10, no. 1, pp. 14–30, 2010. [CrossRef]
  16. A. S. Sedra and K. C. Smith, Microelectronic Circuits, 4th ed. New York, USA: Oxford University, 1998.
  17. Z. Chen, T. Brandon, and D. Elliott, “Jointly designed architecture-aware LDPC convolutional codes and high-throughput parallel encoders/decoders,” IEEE Trans. Circuits Syst., vol.  57, no. 4, pp. 836–849, 2010.
  18. P. Schlafer, N. Wehn, M. Alles, and T. Lehnigk-Emden, “A new dimension of parallelism in ultra high throughput LDPC decoding,” in IEEE Workshop on Signal Processing Systems, 2013, pp. 153–158.
  19. J. F. Wakerly, Digital Design: Principles and Practices, 3rd ed. New Jersey: Prentice Hall, 2001.

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