Multiple Access Resource Allocation in Visible Light Communication Systems

Dima Bykhovsky, Shlomi Arnon
2014 Journal of Lightwave Technology  
Discrete multi-tone (DMT) modulation is known to be an efficient single-transmitter technique for visible-light communication (VLC). However, the use of this technique in a multiple transmitter environment requires effective subcarrier and power allocation design in order to exploit the full potential of spatial multiple-transmitter diversity. Spatial reuse of the subcarriers in the presence of interference and power constraints increases the efficiency of multiple access (MA) DMT
more » ... In this paper, we propose an algorithm that manages interference-constrained subcarrier reuse between different transmitters and power redistribution between different subcarriers in a heuristic manner. The algorithm simulation shows an improvement in the average bit-rate as compared with a conventional DMT method. Furthermore, the effectiveness of the proposed MA-DMT scheme increases with the number of users.
doi:10.1109/jlt.2014.2308282 fatcat:5bs5ufgeufeqnfkped3vmvkc74