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In this paper, we propose fractional sampling for optical orthogonal frequency division multiplexing (O-OFDM) in order to achieve diversity gain for indoor visible light communication systems. Fractional sampling (FS) is… Click to show full abstract
In this paper, we propose fractional sampling for optical orthogonal frequency division multiplexing (O-OFDM) in order to achieve diversity gain for indoor visible light communication systems. Fractional sampling (FS) is a diversity technique that generates different replicas of the received OFDM symbol by sampling the received signal higher than the baud rate. Indoor optical wireless channels exhibit frequency selectivity and FS increases the reliability of the transmission by exploiting the multipath diversity. Our numerical results show that for a realistic indoor channel model, proposed FS receiver provides significant performance improvement over conventional OFDM receiver.
Journal Title: Wireless Personal Communications
Year Published: 2020
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