Spectral efficient cooperative downlink transmission schemes for DCO-OFDM-based optical attocell networks

Hossein Kazemi, Majid Safari, Harald Haas

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract / Description of output

In this paper, novel spectral efficient cooperative transmission schemes are proposed for downlink in indoor light-fidelity (Li-Fi) cellular networks, also termed as optical attocell networks. Downlink cooperation builds upon dual-hop decode-and-forward (DF) relaying with the aid of one or two neighboring base stations (BSS). The connections between the source BS and the relay BSS are provided by perfectly aligned visible light communication (VLC) links. Two cooperation protocols are introduced and evaluated, namely, non-orthogonal DF (NDF) and joint transmission with DF (JDF). A multiple access system based on direct current optical orthogonal frequency division multiplexing (DCO-OFDM) with fractional frequency reuse (FFR) is considered. Also, a line-of-sight (LOS) Lambertian propagation model is used for the indoor VLC channel. For each scheme, the signal-to-interference-plus-noise ratio (SINR) and spectral efficiency for user equipment (UE) with random coordinates in an attocell are derived. The average spectral efficiency within an optical attocell is studied using Monte Carlo simulations.

Original languageEnglish
Title of host publication2016 IEEE 84th Vehicular Technology Conference, VTC Fall 2016 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781509017010
DOIs
Publication statusPublished - 17 Mar 2017
Event84th IEEE Vehicular Technology Conference, VTC Fall 2016 - Montreal, Canada
Duration: 18 Sept 201621 Sept 2016

Publication series

NameIEEE VTC, Fall 2016.

Conference

Conference84th IEEE Vehicular Technology Conference, VTC Fall 2016
Country/TerritoryCanada
CityMontreal
Period18/09/1621/09/16

Keywords / Materials (for Non-textual outputs)

  • Decode-and-forward (DF) relaying
  • Direct current optical orthogonal frequency division multiplexing (DCO-OFDM)
  • Fractional frequency reuse (FFR)
  • Light-fidelity (Li-Fi)
  • Optical attocell networks
  • Visible light communication (VLC)

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