Pilot-aided frame synchronization in optical OFDM systems

Funmilayo B. Offiong*, Sinan Sinanović, Wasiu O. Popoola

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

Efficient frame synchronization is essential for data recovery in communication systems. In this study, a single pilot sequence is used to achieve both frame synchronization and peak-to-average power ratio (PAPR) reduction. The two systems considered are direct-current biased optical orthogonal frequency division multiplexing (DCO-OFDM) and asymmetrically clipped O-OFDM (ACO-OFDM). The pilot symbol is allocated to odd indexed subcarriers only. Thus, the synchronization algorithm leverages the mirror symmetric property of the pilot symbol within a frame to detect the start of the pilot signal at the receiver. This scheme has low complexity and gives precise frame synchronization at signal-to-noise ratios as low as 4 dB in an indoor visible light communication (VLC) channel.

Original languageEnglish
Article number4034
JournalApplied Sciences (Switzerland)
Volume10
Issue number11
DOIs
Publication statusPublished - 11 Jun 2020

Keywords / Materials (for Non-textual outputs)

  • Correlation-based method
  • Frame synchronization
  • Optical OFDM
  • Optical wireless communication
  • Pilot symbol
  • Symbol timing estimation

Fingerprint

Dive into the research topics of 'Pilot-aided frame synchronization in optical OFDM systems'. Together they form a unique fingerprint.

Cite this