Resource Allocation for Cooperative Transmission in Optical Wireless Cellular Networks With Illumination Requirements Articles uri icon

publication date

  • October 2020

start page

  • 6440

end page

  • 6455

issue

  • 10

volume

  • 68

International Standard Serial Number (ISSN)

  • 0090-6778

Electronic International Standard Serial Number (EISSN)

  • 1558-0857

abstract

  • Visible light communication (VLC) often suffers
    from line-of-sight path blockages and high levels of inter-cell
    interference. Thus, the analysis and design of cooperation
    techniques become crucial to address these key impairments. This
    paper studies the performance of different resource allocation
    schemes that are suitable for multi-cell cooperative transmission
    when tri- and tetra-chromatic light-emitting diodes (LEDs)
    and optical orthogonal frequency-division multiple access are
    utilized. Firstly, guidelines are derived for maintaining the
    same spatial distribution of the signal-to-interference-plus-noise
    ratio (SINR) in every sector of the multi-cell environment in case
    of stand-alone (non-cooperative) and cooperative transmission.
    Secondly, the possible resource allocation configurations for both
    stand-alone and cooperative transmission modes are identified for
    different LED types and available orthogonal resources (i.e., fre quency sub-bands per color and sectors per cell). Finally, the data
    rate gain of the multiple resource allocation configurations are
    also analyzed, while verifying the illumination constraints. The
    obtained results confirm that the proper design of cooperative
    transmission configurations will be of paramount importance to
    provide reliable wireless link in ultra-dense VLC deployments

keywords

  • vlc; resource allocation; optical networks