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In this paper, we will review our recent works on advanced signal processing for VLC, particularly the orthogonal circulant matrix transform (OCT) precoding that requires no channel state information. The benefits of OCT precoding in SISO-, MIMO-VLC, and the inherent reason of performance improvement, will be discussed. In addition, comparisons of the existing solutions to combat the limited modulation...
An orthogonal circulant matrix transform (OCT) precoding scheme is proposed for indoor visible light communications. We show the proposed scheme has much reduced complexity but exhibits comparable performance with adaptive bit and power loading.
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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