Abstract
Coherent optical orthogonal frequency division multiplexing (CO-OFDM) is an attractive transmission technique to virtually eliminate intersymbol interference caused by chromatic dispersion and polarization-mode dispersion. Design, development, and operation of CO-OFDM systems require simple, efficient, and reliable methods of their performance evaluation. In this paper, we demonstrate an accurate bit error rate estimation method for QPSK CO-OFDM transmission based on the probability density function of the received QPSK symbols. By comparing with other known approaches, including data-aided and nondata-aided error vector magnitude, we show that the proposed method offers the most accurate estimate of the system performance for both single channel and wavelength division multiplexing QPSK CO-OFDM transmission systems.
| Original language | English |
|---|---|
| Pages (from-to) | 2951-2959 |
| Number of pages | 9 |
| Journal | Journal of Lightwave Technology |
| Volume | 32 |
| Issue number | 17 |
| Early online date | 30 Jun 2014 |
| DOIs | |
| Publication status | Published - 1 Sept 2014 |
Bibliographical note
© 2014 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.Funding: EPSRC Program Grant UNLOC (EP/J017582/1)
Keywords
- bit error rate
- coherent detection
- coherent optical transmission
- orthogonal frequency division multiplexing
- BER