Downlink resource allocation for multichannel TDMA visible light communications

Amr Mohamed Abdelaziz Abdelhady, Osama Amin, Anas Chaaban, Mohamed-Slim Alouini

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

16 Scopus citations


Optical wireless communications (OWC) in general and resource allocation in OWC networks particularly have gained lots of attention recently. In this work, we consider the resource allocation problem of a visible light communication downlink transmission system based on time division multiple access with the objective of maximizing spectral efficiency (SE). As for the operational conditions, we impose constraints on the average optical intensity, the energy consumption and the quality-of-service. To solve the non-convex problem, we transform the objective function into a difference of concave functions by solving a second order differential inequality. Then, we propose a low-complexity algorithm to solve the resource allocation problem. Finally, we show by simulations the SE performance gains achieved by optimizing the power allocation over equal power allocation in the considered system. Numerical results show the SE gains achieved by using this solution.
Original languageEnglish (US)
Title of host publication2016 IEEE Global Conference on Signal and Information Processing (GlobalSIP)
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages5
ISBN (Print)9781509045457
StatePublished - May 12 2017


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