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We propose and experimentally demonstrate a novel channel-independent multi-band orthogonal circulant matrix transform (MB-OCT) precoding, to efficiently combat the severe frequency-selective fading induced by the limited modulation bandwidth of visible light communication (VLC). The proposed MB-OCT precoding exhibits ladder-like signal-to-noise-ratio (SNR) profile, thus significant BER reduction...
In this paper, different PAPR reduction schemes for orthogonal frequency division multiplexing (OFDM) based visible light communication (VLC) system are experimentally investigated. We show that PAPR reduction may not always result in performance improvement in VLC systems. Compared to the linear selective mapping (SLM) precoding scheme, the nonlinear companding schemes, albeit providing larger PAPR...
We propose a phase pre-distortion method to improve the symbol-error-rate performance of non-orthogonal multiple access in visible light communications. Both theoretical analysis and experimental evaluation have been performed to prove its effectiveness.
In this paper, we propose a MIMO-OFDM indoor VLC system with orthogonal circulant matrix transform (OCT) precoding and angular receivers to significantly improve the achievable aggregate capacity of equivalent parallel channels. Compared with the conventional MIMO-OFDM based VLC systems, the data streams of LED transmitters in our proposed system are linearly pre-processed with the OCT precoding scheme...
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