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A Novel Coherent Transmission Scheme for Visible Light Communication

Dawoud, Diana W., Heliot, Fabien, Imran, Muhammad and Tafazolli, Rahim (2018) A Novel Coherent Transmission Scheme for Visible Light Communication In: IEEE International Conference on Communications, 20-24 May 2018, Kansas City, MO, USA.

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The spatially-incoherent radiators in visible light communication (VLC) constrain the optical carrier to be only driven by a real electrical sub-carrier, which cannot be quadrature modulated as in classic RF-based systems. This restriction, in turn, severely limits the transmission throughput of VLC systems. To overcome this technical challenge, we propose a novel coherent transmission scheme for VLC, in which the optical carrier is only treated as a purely amplitude-modulated carrier capable of transmitting two-dimensional (2D) symbols (e.g. quadrature modulated symbols). The ability of our new coherent transmission scheme to transmit 2D symbols is validated through analytical symbol error rate derivation and Matlab simulations. Results show that our scheme can improve both the spectral and energy efficiency of VLC systems, i.e. by either doubling the spectral efficiency or achieving more than 45% energy efficiency improvement, when compared to its existing counterparts.

Item Type: Conference or Workshop Item (Conference Paper)
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering
Authors :
Date : 24 May 2018
Copyright Disclaimer : © 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works
Uncontrolled Keywords : Visible light communications; Intensity modulated direct detection; Coherent transmission
Related URLs :
Depositing User : Clive Harris
Date Deposited : 26 Feb 2018 15:09
Last Modified : 26 Feb 2018 15:09

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