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Huanlin Liu,Hongyue Dai,Yong Chen,Peijie Xia 한국광학회 2016 Current Optics and Photonics Vol.20 No.1
Visible Light Communication (VLC) using Light Emitting Diodes (LEDs) within the existing lightinginfrastructure can reduce the implementation cost and may gain higher throughput than radio frequency(RF) or Infrared (IR) based wireless systems. Current indoor VLC systems may suffer from poor downlinkresource allocation problems and small system throughput. To address these two issues, we propose analgorithm called a conflict graph scheduling (CGS) algorithm, including a conflict graph and a schemethat is based on the conflict graph. The conflict graph can ensure that users are able to transmit datawithout interference. The scheme considers the user fairness and system throughput, so that they both canget optimum values. Simulation results show that the proposed algorithm can guarantee significantimprovement of system throughput under the premise of fairness.