Resource allocation in Co-existing optical wireless hetnets

Osama Zwaid Alsulami, Sarah O.M. Saeed, Sanaa Hamid Mohamed, T. E.H. El-Gorashi, Mohammed T. Alresheedi, Jaafar M.H. Elmirghani

Research output: A Conference proceeding or a Chapter in BookConference contributionpeer-review

2 Citations (Scopus)


In multi-user optical wireless communication (OWC) systems interference between users and cells can significantly affect the quality of OWC links. Thus, in this paper, a mixed-integer linear programming (MILP) model is developed to establish the optimum resource allocation in wavelength division multiple access (WDMA) optical wireless systems. Consideration is given to the optimum allocation of wavelengths and access points (APs) to each user to support multiple users in an environment where Micro, Pico and Atto Cells co-exist for downlink communication. The high directionality of light rays in small cells, such as Pico and Atto cells, can offer a very high signal to noise and interference ratio (SINR) at high data rates. Consideration is given in this work to visible light communication links which utilise four wavelengths per access point (red, green, yellow and blue) for Pico and Atto cells systems, while the Micro cell system uses an infrared (IR) transmitter. Two 10-user scenarios are considered in this work. All users in both scenarios achieve a high optical channel bandwidth beyond 7.8 GHz. In addition, all users in the two scenarios achieve high SINR beyond the threshold (15.6 dB) needed for 10-9 on off keying (OOK) bit error rate at a data rate of 7.1 Gbps.

Original languageEnglish
Title of host publication2020 22nd International Conference on Transparent Optical Networks, ICTON 2020
EditorsFrancesco Prudenzano, Crina Cojocaru, Patryk Urban, Marian Marciniak
Place of PublicationUnited States
PublisherIEEE, Institute of Electrical and Electronics Engineers
Number of pages7
ISBN (Electronic)9781728184234
ISBN (Print)9781728184241
Publication statusPublished - Jul 2020
Externally publishedYes
Event22nd International Conference on Transparent Optical Networks, ICTON 2020 - Bari, Italy
Duration: 19 Jul 202023 Jul 2020

Publication series

NameInternational Conference on Transparent Optical Networks
ISSN (Electronic)2162-7339


Conference22nd International Conference on Transparent Optical Networks, ICTON 2020


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