Subcarrier Pairwise Coding for Short-Haul L/E-ACO-OFDM

Binhuang Song, Bill Corcoran, Qibing Wang, Leimeng Zhuang, Arthur J. Lowery

Research output: Contribution to journalArticleResearchpeer-review

7 Citations (Scopus)

Abstract

Dispersion-induced power fading in intensity modulated direct-detection systems degrades the higher frequency subcarriers' signal qualities. In layered/enhanced asymmetrically clipped optical OFDM (ACO-OFDM), which is a spectrally efficient version of ACO-OFDM, the error propagation in the iterative decoding can further degrade the performance, especially when a low bias current is used for the directly modulated laser. In this letter, we propose using pairwise coding within each layer to improve the bit error rate. We transmitted 5-GBb 16-QAM OFDM signals over a 19.8-km single mode fiber, and found a 3.6-dB improvement in the Q2-factor.

Original languageEnglish
Article number8006213
Pages (from-to)1584-1587
Number of pages4
JournalIEEE Photonics Technology Letters
Volume29
Issue number18
DOIs
Publication statusPublished - 15 Sep 2017

Keywords

  • asymmetrically clipped orthogonal frequency division multiplexing (ACO-OFDM)
  • Direct modulation direct-detection (DM/DD)
  • optical communications
  • pairwise coding

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