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Hybrid orthogonal frequency division multiplexing (H-OFDM) for visible light communication

Authors: null Zhang Jun; null Zhang Jian;

Hybrid orthogonal frequency division multiplexing (H-OFDM) for visible light communication

Abstract

In this paper, we present a novel hybrid orthogonal frequency division multiplexing (H-OFDM) for visible light communication (VLC). H-OFDM uses a combination of DC-bias optical OFDM (DCO-OFDM) and asymmetrically clipped optical OFDM (ACO-OFDM) techniques. In this hybrid technique, the absolute value of bipolar DCOOFDM signal is used to carry amplitude information in the first block, while the ACO-OFDM signal is used to transmit the polarity information of the DCO-OFDM signal in the second block. This new technique does not need any DC bias and could achieve maximum 33.3% increase of data rate with 256-QAM in theory. Extensive simulations notice that H-OFDM results in almost 3 dB performance improvement with an additive white Gaussian noise. In addition, it saves up to 2 dB input electrical average power when negative clipper and power allocation are applied. Therefore, with no DC bias, data rate increment and power efficient, H-OFDM seems to be an attractive technique for VLC system using intensity modulated direct detection (IM/DD).

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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Average
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