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Journal of Optical Communications and Networking

Journal of Optical Communications and Networking

  • Editors: K. Bergman and O. Gerstel
  • Vol. 5, Iss. 12 — Dec. 1, 2013
  • pp: 1402–1412

Multi-layer Modulation for Intensity-Modulated Direct-Detection Optical OFDM

Rong Zhang and Lajos Hanzo  »View Author Affiliations


Journal of Optical Communications and Networking, Vol. 5, Issue 12, pp. 1402-1412 (2013)
http://dx.doi.org/10.1364/JOCN.5.001402


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Abstract

Multi-layer modulation (MLM)-aided intensity-modulated direct-detection (IM/DD) DC-biased optical orthogonal frequency division multiplexing (DCO-OFDM) and asymmetrically clipped optical OFDM (ACO-OFDM) are considered. More explicitly, we propose a double turbo receiver (DTR) for jointly detecting the MLM and for compensating the clipping distortion. Additionally, a genetic-algorithm-aided weight optimization is pursued for seeking an increased MLM bits per symbol (BPS) throughput. Our numerical results demonstrate that for ACO-OFDM, at the throughput of η=3 BPS, a 3 dB gain was attained for Q=15 DTR iterations without requiring weight optimization. For DCO-OFDM, an even more significant gain of 12 and 8 dB was observed at the throughput of η=3 BPS and η=4 BPS, respectively, without any clipping distortion compensation.

© 2013 Optical Society of America

OCIS Codes
(060.4080) Fiber optics and optical communications : Modulation
(060.2605) Fiber optics and optical communications : Free-space optical communication

ToC Category:
Research Papers

History
Original Manuscript: March 21, 2013
Revised Manuscript: October 1, 2013
Manuscript Accepted: October 18, 2013
Published: November 27, 2013

Citation
Rong Zhang and Lajos Hanzo, "Multi-layer Modulation for Intensity-Modulated Direct-Detection Optical OFDM," J. Opt. Commun. Netw. 5, 1402-1412 (2013)
http://www.opticsinfobase.org/jocn/abstract.cfm?URI=jocn-5-12-1402


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