Downlink resource allocation for multichannel TDMA visible light communications

Type
Conference Paper

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

KAUST Department
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Electrical Engineering Program

Online Publication Date
2017-05-12

Print Publication Date
2016-12

Date
2017-05-12

Abstract
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.

Citation
Abdelhady AM, Amin O, Chaaban A, Alouini M-S (2016) Downlink resource allocation for multichannel TDMA visible light communications. 2016 IEEE Global Conference on Signal and Information Processing (GlobalSIP). Available: http://dx.doi.org/10.1109/GlobalSIP.2016.7905771.

Publisher
Institute of Electrical and Electronics Engineers (IEEE)

Journal
2016 IEEE Global Conference on Signal and Information Processing (GlobalSIP)

DOI
10.1109/GlobalSIP.2016.7905771

Additional Links
http://ieeexplore.ieee.org/document/7905771/

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