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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 23 — Nov. 18, 2013
  • pp: 27558–27564

High-speed quasi-balanced detection OFDM in visible light communication

Yuanquan Wang, Nan Chi, Yiguang Wang, Rongling Li, Xingxing Huang, Chao Yang, and Ziran Zhang  »View Author Affiliations


Optics Express, Vol. 21, Issue 23, pp. 27558-27564 (2013)
http://dx.doi.org/10.1364/OE.21.027558


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Abstract

In this paper, we proposed and experimentally demonstrated a novel quasi-balanced detection (QBD) technique in orthogonal frequency division multiplexing (OFDM) visible light communication (VLC) system. By employing opposite signals to odd and even consecutive symbols, the nonlinearity distortion, and direct current can be eliminated efficiently. Additionally, the sensitivity of receiver can also be improved by 3dB, thus a longer transmission distance and high-order modulation formats can be received. We achieved physical data rate of 2.1-Gb/s enabled by wavelength-division-multiplexing (WDM), pre- and post-equalization, and the resulting bit error ratios (BERs) were below the FEC limit of 3.8x10−3. The distance was above 2.5 meters that was long enough for indoor communication. Compared with conventional direct-detection optical (DDO-OFDM) and asymmetrically-clipped optical (ACO-OFDM), the BER can be enhanced by 22.2dB and 20.8dB, respectively, which shows great potential in short range and low cost access network.

© 2013 Optical Society of America

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(230.3670) Optical devices : Light-emitting diodes
(060.2605) Fiber optics and optical communications : Free-space optical communication

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: July 8, 2013
Revised Manuscript: September 22, 2013
Manuscript Accepted: October 11, 2013
Published: November 4, 2013

Citation
Yuanquan Wang, Nan Chi, Yiguang Wang, Rongling Li, Xingxing Huang, Chao Yang, and Ziran Zhang, "High-speed quasi-balanced detection OFDM in visible light communication," Opt. Express 21, 27558-27564 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-23-27558


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References

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