Optimized hybrid QPSK/8QAM for CO-OFDM transmissions

S.T. Le*, M.E. McCarthy, S.K. Turitsyn

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference publication

Abstract

In optical communications, a high spectral efficiency can be realized by applying high order modulation formats such as 8QAM, 16QAM and 64QAM. However, depending on the system's requirements (bandwidth, performance and transmission distance), the maximum spectral efficiency may not be achievable with the regular 2m-array QAM formats. In this case, a hybrid modulation format, such as QPSK/8QAM, can provide an effective solution. In this work, we deliver the optimum design for single channel coherent optical orthogonal frequency division multiplexing systems with hybrid QPSK/8QAM modulation format. We also discuss a simple but effective strategy for applying hybrid QAMs for long-haul optical communications without considering sophisticated bit and power loading algorithms developed for wireless communications.

Original languageEnglish
Title of host publication2014 9th international symposium on Communication Systems, Networks and Digital Signl Processing, CSNDSP 2014
PublisherIEEE
Pages763-766
Number of pages4
ISBN (Print)978-1-4799-2581-0
DOIs
Publication statusPublished - 31 Dec 2014
Event9th IEEE/IET international symposium on Communication Systems, Networks and Digital Signl Processing - Manchester Metropolitan University, Manchester, United Kingdom
Duration: 23 Jul 201425 Jul 2014

Symposium

Symposium9th IEEE/IET international symposium on Communication Systems, Networks and Digital Signl Processing
Abbreviated titleCSNDSP 2014
CountryUnited Kingdom
CityManchester
Period23/07/1425/07/14

Bibliographical note

Funding: EPRSC programme Grant UNLOC (EP/J017582/1)

Keywords

  • coherent
  • optical communications
  • orthogonal frequency division multiplexing (OFDM)

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  • Research Output

    • 4 Conference publication

    A 10 Mb/s visible light communication system using a low bandwidth polymer light-emitting diode

    Haigh, P. A., Bausi, F., Kanesan, T., Le, S. T., Rajbhandari, S., Ghassemlooy, Z., Papakonstantinou, I., Popoola, W. O., Burton, A., le Minh, H., Ellis, A. D. & Cacialli, F., 2014, 2014 9th international symposium on Communication Systems, Networks and Digital Signl Processing, CSNDSP 2014. IEEE, p. 999-1004 6 p.

    Research output: Chapter in Book/Report/Conference proceedingConference publication

    Open Access
    File
  • Adaptive time synchronization and frequency offset estimation for CO-OFDM

    Le, S. T., McCarthy, M. E., Giacoumidis, E. & Doran, N. J., 16 Oct 2014, 2014 9th international symposium on Communication Systems, Networks and Digital Signl Processing, CSNDSP 2014. IEEE, p. 767-770 4 p.

    Research output: Chapter in Book/Report/Conference proceedingConference publication

  • Dual-polarization multi-band OFDM signals for next generation core networks

    Giacoumidis, E., Le, T. S., Phillips, I. D., Ellis, A. D. & Doran, N. J., 31 Dec 2014, 2014 9th international symposium on Communication Systems, Networks and Digital Signl Processing, CSNDSP 2014. IEEE, p. 34-39 6 p.

    Research output: Chapter in Book/Report/Conference proceedingConference publication

  • Cite this

    Le, S. T., McCarthy, M. E., & Turitsyn, S. K. (2014). Optimized hybrid QPSK/8QAM for CO-OFDM transmissions. In 2014 9th international symposium on Communication Systems, Networks and Digital Signl Processing, CSNDSP 2014 (pp. 763-766). IEEE. https://doi.org/10.1109/CSNDSP.2014.6923929