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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 29, Iss. 10 — May. 15, 2011
  • pp: 1547–1554

On Bit and Power Loading for OFDM Over SI-POF

Barry Cardiff, Mark F. Flanagan, Frank Smyth, Liam P. Barry, and Anthony D. Fagan

Journal of Lightwave Technology, Vol. 29, Issue 10, pp. 1547-1554 (2011)


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Abstract

A new methodology is proposed for the modeling of practical uncoded bit and power loading schemes for OFDM, based on the assumption of a uniform transmit power spectrum. The accuracy of this technique, both in terms of predicted maximum data rate and occupied bandwidth, is demonstrated analytically for an Intensity Modulated/Direct Detected (IM/DD) system over Step Index Plastic Optical Fibers (SI-POF). It is shown that both this new methodology and the well known water pouring theorem accurately predict the maximum achievable data rate in practical uncoded systems; however, it is also demonstrated that the new methodology is a better predictor of the bandwidth occupied by the transmit signal, thus providing an important analytical tool for system designers.The analysis presented is also experimentally verified using an IM/DD optical system employing a directly modulated Resonant Cavity Light Emitting Diode (RCLED) light source and several lengths of 1 mm SI-POF.

© 2011 IEEE

Citation
Barry Cardiff, Mark F. Flanagan, Frank Smyth, Liam P. Barry, and Anthony D. Fagan, "On Bit and Power Loading for OFDM Over SI-POF," J. Lightwave Technol. 29, 1547-1554 (2011)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-29-10-1547


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