A Cross-Layer Design for Dynamic Resource Management of VLC Networks

M. Selim Demir, Murat Uysal

Research output: Contribution to journalArticlepeer-review


In this article, we propose a cross-layer resource management mechanism for an indoor multiuser visible light communication (VLC) access network. The physical layer builds upon DC-biased orthogonal frequency division multiple access. Channel state information at the physical layer serves as a performance indicator for better data rate opportunity while queue state information at medium access control layer provides the information about packet urgency. A packet based traffic arrival model is considered such that incoming packets with random inter arrival times join a separate queue dedicated to each user if the admission control accepts them, otherwise packets are dropped. We formulate and solve a stochastic cross-layer optimization problem to optimize the network resources under the constraints of queue stability and power to maximize the average system throughput. By using the Lyapunov optimization technique, we convert the long term time-Average optimization problem into series of single time slot online problem. Then, we decompose the problem into independent sub problems and propose packet admission, resource (access point and subcarrier) allocation and power control solutions. We present simulation results to demonstrate the superiority of proposed scheme over existing solutions in the literature.

Original languageEnglish (US)
Article number9343866
Pages (from-to)1858-1867
Number of pages10
JournalIEEE Transactions on Communications
Issue number3
StatePublished - Mar 2021


  • Lyapunov optimization
  • Visible light communications
  • genetic algorithm
  • power control
  • resource management

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


Dive into the research topics of 'A Cross-Layer Design for Dynamic Resource Management of VLC Networks'. Together they form a unique fingerprint.

Cite this