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• W2892213112 abstract "Due to the limited dynamic range of the off-the-shelf electrical and optical components, deliberate digital clipping (DDC) is widely applied to optical orthogonal frequency division multiplexing (OFDM) based visible light communication systems. In this paper, we present a theoretical characterization of the layered asymmetrically clipped optical OFDM (ACO-OFDM) signals subject to peak clipping. We decouple a clipped L -layer ACO-OFDM symbol to L single-layer ACO-OFDM symbols, each corresponding to a layer, and show that these symbols are subject to symmetrical peak clippings at random levels. Using Bussgang's theorem, the resulting attenuation factors and variances of the additive noise associated with each layer are derived. It is shown that the clipping noise caused by the DDC mainly falls onto the first layer, and its impact is gradually reduced in the subsequent layers. In order to combat the clipping noise, a novel receiver based on decision aided reconstruction is proposed. Simulation results show that the proposed receiver can effectively mitigate the clipping noise, leading to significant improvement of bit error rates over the conventional receiver." @default.
• W2892213112 created "2018-09-27" @default.
• W2892213112 creator A5032927520 @default.
• W2892213112 creator A5046370742 @default.
• W2892213112 creator A5076921823 @default.
• W2892213112 date "2019-01-01" @default.
• W2892213112 modified "2023-09-30" @default.
• W2892213112 title "Analysis and Mitigation of Clipping Noise in Layered ACO-OFDM Based Visible Light Communication Systems" @default.
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• W2892213112 doi "https://doi.org/10.1109/tcomm.2018.2868665" @default.
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