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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 18 — Aug. 29, 2011
  • pp: 17713–17728

Theoretical and experimental evaluation of clipping and quantization noise for optical OFDM

Christian R. Berger, Yannis Benlachtar, Robert I. Killey, and Peter A. Milder  »View Author Affiliations


Optics Express, Vol. 19, Issue 18, pp. 17713-17728 (2011)
http://dx.doi.org/10.1364/OE.19.017713


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Abstract

Orthogonal frequency division multiplexing (OFDM) has recently gained substantial interest in high capacity optical fiber communications. Unlike wireless systems, optical OFDM systems are constrained by the limited resolution of the ultra high-speed digital-to-analog converters (DAC) and analog-to-digital converters (ADC). Additionally, the situation is exacerbated by the large peak-to-average power ratio (PAPR) inherent in OFDM signals. In this paper, we study the effects of clipping and quantization noise on the system performance. We analytically quantify the introduced distortion as a function of bit resolution and clipping ratio, both at the DAC and ADC. With this we provide a back-to-back signal-to-noise ratio analysis to predict the bit error rate of the system, assuming a fixed received optical power and ideal electrical-optical-electrical conversion. Simulation and experimental results are used to confirm the validity of the expressions.

© 2011 OSA

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

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: May 19, 2011
Revised Manuscript: June 30, 2011
Manuscript Accepted: July 15, 2011
Published: August 25, 2011

Citation
Christian R. Berger, Yannis Benlachtar, Robert I. Killey, and Peter A. Milder, "Theoretical and experimental evaluation of clipping and quantization noise for optical OFDM," Opt. Express 19, 17713-17728 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-18-17713


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References

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