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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 18 — Sep. 1, 2008
  • pp: 14163–14172

Alamouti-type polarization-time coding in coded-modulation schemes with coherent detection

Ivan B. Djordjevic, Lei Xu, and Ting Wang  »View Author Affiliations


Optics Express, Vol. 16, Issue 18, pp. 14163-14172 (2008)
http://dx.doi.org/10.1364/OE.16.014163


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Abstract

We present the Almouti-type polarization-time (PT) coding scheme suitable for use in multilevel (M≥2) block-coded modulation schemes with coherent detection. The PT-decoder is found it to be similar to the Alamouti combiner. We also describe how to determine the symbols log-likelihood ratios in the presence of laser phase noise. We show that the proposed scheme is able to compensate even 800 ps of differential group delay, for the system operating at 10 Gb/s, with negligible penalty. The proposed scheme outperforms equal-gain combining polarization diversity OFDM scheme. However, the polarization diversity coded-OFDM and PT-coding based coded-OFDM schemes perform comparable. The proposed scheme has the potential of doubling the spectral efficiency compared to polarization diversity schemes.

© 2008 Optical Society of America

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

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: June 17, 2008
Revised Manuscript: July 19, 2008
Manuscript Accepted: August 19, 2008
Published: August 26, 2008

Citation
Ivan B. Djordjevic, Lei Xu, and Ting Wang, "Alamouti-type polarization-time coding in coded-modulation schemes with coherent detection," Opt. Express 16, 14163-14172 (2008)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-16-18-14163


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References

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