Abstract
This Letter presents a multi-hop relay visible light communication (VLC) system
for maritime applications. Maritime VLC systems suffer from limited coverage distance
due inherently to the usage of light-emitting diodes and photodetectors. The proposed
system employs a multiple of decode-and-forward relays to extend coverage distance in
maritime environments. The multi-hop relay based maritime VLC is analyzed under a
maritime channel modeled by the JONSWAP spectrum and gamma–gamma distribution. It is
found that the use of relays in maritime environments can extend the coverage distance
significantly and also improve the performance. In addition, the performance of the
system is analyzed using various combining techniques at the receiver to enhance the
performance. The maximal ratio combining technique is found to provide superior link
quality in maritime environments.
© 2016 Chinese Laser Press
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