Pilot-Aided Frame Synchronization in Optical OFDM Systems

Funmilayo B. Offiong; Sinan Sinanovic; Wasiu O. Popoola

doi:10.3390/app10114034

Pilot-Aided Frame Synchronization in Optical OFDM Systems

Funmilayo B. Offiong^*, Sinan Sinanovic, Wasiu O. Popoola

^*Corresponding author for this work

Electronic Engineering

Research output: Contribution to journal › Article › peer-review

5 Downloads (Pure)

Abstract

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 language	English
Article number	4034
Number of pages	9
Journal	Applied Sciences
Volume	10
Issue number	11
DOIs	https://doi.org/10.3390/app10114034
Publication status	Published - 11 Jun 2020

Keywords

optical OFDM; pilot symbol; frame synchronization; symbol timing estimation; correlation-based method; optical wireless communication

Documents and Links

10.3390/app10114034Licence: Other

Offiong, F.B. et al (2020) Pilot-aided frame synchronization in optical OFDM systems
© 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Final published version, 290 KBLicence: CC BY

Cite this

@article{fdd6f6f60ee743dca128102ea77ae727,

title = "Pilot-Aided Frame Synchronization in Optical OFDM Systems",

abstract = "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. ",

keywords = "optical OFDM; pilot symbol; frame synchronization; symbol timing estimation; correlation-based method; optical wireless communication",

author = "Offiong, {Funmilayo B.} and Sinan Sinanovic and Popoola, {Wasiu O.}",

note = "Acceptance from VoR. OA journal",

year = "2020",

month = jun,

day = "11",

doi = "10.3390/app10114034",

language = "English",

volume = "10",

journal = "Applied Sciences",

issn = "2076-3417",

publisher = "MDPI",

number = "11",

}

TY - JOUR

T1 - Pilot-Aided Frame Synchronization in Optical OFDM Systems

AU - Offiong, Funmilayo B.

AU - Sinanovic, Sinan

AU - Popoola, Wasiu O.

N1 - Acceptance from VoR. OA journal

PY - 2020/6/11

Y1 - 2020/6/11

N2 - 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.

AB - 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.

KW - optical OFDM; pilot symbol; frame synchronization; symbol timing estimation; correlation-based method; optical wireless communication

U2 - 10.3390/app10114034

DO - 10.3390/app10114034

M3 - Article

VL - 10

JO - Applied Sciences

JF - Applied Sciences

SN - 2076-3417

IS - 11

M1 - 4034

ER -

Pilot-Aided Frame Synchronization in Optical OFDM Systems

Abstract

Keywords

Documents and Links

Fingerprint

Cite this