Low-latency synchronization for OFDM-based visible light communication

Goroshko, Kseniia; Manolakis, Konstantinos; Grobe, Liane; Jungnickel, Volker

doi:10.1109/iccw.2015.7247362

Cited by 8 publications

(8 citation statements)

References 21 publications

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“…where A N stands for the inverse of A N . This preamble structure was recommended in [21]. Binary Gold sequences [22] are used as a base for the subsequences A N .…”

Section: A Frame Synchronizationmentioning

confidence: 99%

A Physical Layer for Low Power Optical Wireless Communications

Hinrichs

Berenguer

Hilt

et al. 2021

IEEE Trans. on Green Commun. Netw.

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“…where A N stands for the inverse of A N . This preamble structure was recommended in [21]. Binary Gold sequences [22] are used as a base for the subsequences A N .…”

Section: A Frame Synchronizationmentioning

confidence: 99%

A Physical Layer for Low Power Optical Wireless Communications

Hinrichs

Berenguer

Hilt

et al. 2021

IEEE Trans. on Green Commun. Netw.

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“…Thus, one approach used in categorizing synchronization methods in OFDM is based on the portion of the transmitted signal utilized for the purpose of symbol timing offset estimation at the receiver. The two broad classifications under this category are called blind and preamble-based techniques [5]. The blind techniques exploit the unique properties of the transmitted OFDM payload to perform synchronization.…”

Section: Frame Synchronization In a Pilot-assisted Optical Ofdm Systemmentioning

confidence: 99%

“…To reduce this ambiguity, Park et al proposed a synchronization timing metric which has an impulse-like shape with a principal peak indicating the start of the training symbol [4]. Synchronization methods in O-OFDM include the modified versions of the RF-OFDM techniques to make them applicable to optical communication systems and a number of techniques specially designed for O-OFDM [5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

“…The synchronization algorithm has low complexity and does not require prior knowledge of the transmitted pilot symbol at the receiver. In comparison with the modified Park's synchronization method [5,9], our proposed PA synchronization scheme has additional capability of using the pilot signal for PAPR reduction in O-OFDM transmitter and the timing metric has relatively low complexity with the ability to give precise synchronization at signal-to-noise ratio (SNR) as low as 4 dB in an indoor VLC channel.…”

Section: Introductionmentioning

confidence: 99%

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Pilot-Aided Frame Synchronization in Optical OFDM Systems

2020

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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.

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“…Visible light communication (VLC) [1][2][3][4] is a promising wireless communication technique to achieve high security, energy conservation and immunity for the electromagnetic radiation. In VLC systems, indoors light light-emitting diode (LED) bulbs are regarded as base stations via power line communication to provide flexible communication services.…”

Section: Introductionmentioning

confidence: 99%