Referenced Items are not available for this document.
We analyze the intercarrier interference (ICI) induced by residual frequency offset (RFO) in optical fast orthogonal frequency division multiplexing (F-OFDM) and compare this scheme with conventional OFDM in two scenarios: (1) the same RFO to subcarrier spacing ratio, and (2) the same discrete cosine or Fourier transform point size. In both scenarios, the ICI on a subcarrier in F-OFDM is dominated by the adjacent subcarriers, but the contribution to that in conventional OFDM is dispersed across the subcarriers. 19.5-GBaud 16QAM and 4ASK F-OFDM systems are investigated. 16QAM F-OFDM exhibits an RFO tolerance up to six times greater than that of 16QAM OFDM, when equalizers with the same tap number are used for the RFO compensation. 4ASK F-OFDM using 1-tap equalizers can achieve an RFO tolerance of up to four times greater than that of five-tap equalizer-based 4ASK OFDM.
Published in:
Photonics Technology Letters, IEEE
(Volume:24
,
Issue:
24
)
Date of Publication: Dec.15, 2012
- Page(s):
- 2284 - 2287
- ISSN :
- 1041-1135
- INSPEC Accession Number:
- 13150313
- Digital Object Identifier :
- 10.1109/LPT.2012.2223457
- Product Type:
- Journals & Magazines
- Date of Publication :
- 09 October 2012
- Date of Current Version :
- 29 November 2012
- Issue Date :
- Dec.15, 2012
- Sponsored by :
- IEEE Photonics Society
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