OSA's Digital Library

Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 2 — Jan. 16, 2012
  • pp: 1635–1648

Sensitivity improvement and carrier power reduction in direct-detection optical OFDM systems by subcarrier pairing

Yi Hong, Arthur J. Lowery, and Emanuele Viterbo  »View Author Affiliations

Optics Express, Vol. 20, Issue 2, pp. 1635-1648 (2012)

View Full Text Article

Enhanced HTML    Acrobat PDF (1593 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



This paper introduces subcarrier pairing to optical OFDM systems and shows, using simulations, that the sensitivity of Direct-Detection Optical Orthogonal Frequency Division Multiplexed (DDO-OFDM) systems can be improved by 0.7 dB, without any coding overheads. Subcarrier pairing works because each subcarrier acquires a different electrical Signal to Interference plus Noise Ratio (SINR), which typically increases with the subcarrier’s frequency. Pairing the good and bad subcarriers, so that information is split between them, improves the performance of the bad subcarrier more than it degrades the performance of the good subcarrier. This lowers the required Optical Signal to Noise Ratio (OSNR) for the system to give a certain Bit Error Ratio (BER).

© 2012 OSA

OCIS Codes
(060.4080) Fiber optics and optical communications : Modulation
(060.4510) Fiber optics and optical communications : Optical communications

ToC Category:
Subsystems for Optical Networks

Original Manuscript: September 28, 2011
Revised Manuscript: October 15, 2011
Manuscript Accepted: October 17, 2011
Published: January 11, 2012

Virtual Issues
European Conference on Optical Communication 2011 (2011) Optics Express

Yi Hong, Arthur J. Lowery, and Emanuele Viterbo, "Sensitivity improvement and carrier power reduction in direct-detection optical OFDM systems by subcarrier pairing," Opt. Express 20, 1635-1648 (2012)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. A. J. Lowery and J. Armstrong, “Orthogonal-frequency-division multiplexing for dispersion compensation of long-haul optical systems,” Opt. Express14(6), 2079–2084 (2006). [CrossRef] [PubMed]
  2. B. J. C. Schmidt, Z. Zan, L. B. Du, and A. J. Lowery, “120 Gbit/s over 500-km using single-band polarization-multiplexed self-coherent optical OFDM,” J. Lightwave Technol.28(4), 328–335 (2010). [CrossRef]
  3. W. Shieh and C. Athaudage, “Coherent optical orthogonal frequency division multiplexing,” Electron. Lett.42(10), 587–588 (2006). [CrossRef]
  4. S. L. Jansen, I. Morita, N. Tadeka, and H. Tanaka, “20-Gb/s OFDM transmission over 4,160-km SSMF enabled by RF-pilot tone phase noise compensation,” in Conference on Optical Fiber Communication, OFC (Anaheim, CA., 2007), p. PDP15.
  5. A. J. Lowery, “Amplified-spontaneous noise limit of optical OFDM lightwave systems,” Opt. Express16(2), 860–865 (2008). [CrossRef] [PubMed]
  6. S. L. Jansen, I. Morita, and H. Tanaka, “Carrier-to-signal power in fiber-optic SSB-OFDM transmission systems” in IEICE General Conference (Nagoya, 2007), pp. B-10–24, 363.
  7. G. Raleigh and J. Cioffi, “Spatio-temporal coding for wireless communication,” IEEE Trans. Commun.46(3), 357–366 (1998). [CrossRef]
  8. R. Knopp and G. Caire, “Power control schemes for TDD systems with multiple transmit and receive antennas,” in Proc. of IEEE Global Telecommunications Conference (Globecom) (Rio de Janeiro, 1999), pp. 2326–2330.
  9. S. K. Mohammed, E. Viterbo, Y. Hong, and A. Chockalingam, “MIMO precoding with X- and Y-codes,” IEEE Trans. Inf. Theory57(6), 3542–3566 (2011). [CrossRef]
  10. J. Boutros and E. Viterbo, “Signal space diversity: a power- and bandwidth-efficient diversity technique for the Rayleigh fading channel,” IEEE Trans. Inf. Theory44(4), 1453–1467 (1998). [CrossRef]
  11. Y. Hong, E. Viterbo, and A. J. Lowery, “Improving the sensitivity of direct-detection optical OFDM systems by pairing of the optical subcarriers,” in European Conference on Optical Communications (Geneva, 2011), p. Th.11.B.2.
  12. G. Caire, G. Taricco, and E. Biglieri, “Bit-interleaved coded modulation,” IEEE Trans. Inf. Theory44(3), 927–946 (1998). [CrossRef]
  13. J. M. Tang, P. M. Lane, and K. A. Shore, “High-speed transmission of adaptively modulated optical OFDM signals over multimode fibers using directly modulated DFBs,” J. Lightwave Technol.24(1), 429–441 (2006). [CrossRef]
  14. C. S. Park and K. B. Lee, “Transmit power allocation for BER performance improvement in multicarrier systems,” IEEE Trans. Commun.52(10), 1658–1663 (2004). [CrossRef]
  15. Q. Yang, W. Shieh, and Y. Ma, “Bit and power loading for coherent optical OFDM,” IEEE Photon. Technol. Lett.20(15), 1305–1307 (2008). [CrossRef]
  16. B. Cardiff, M. F. Flanagan, F. Smyth, L. P. Barry, and A. D. Fagan, “On bit and power loading for OFDM over SI-POF,” J. Lightwave Technol.29(10), 1547–1554 (2011). [CrossRef]

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited