Effect of Receiver Orientation on Resource Allocation in Optical Wireless Systems

Optical wireless communication (OWC) systems have been the subject of a significant amount of interest as they can be used in sixth generation (6G) wireless communication to provide high data rates and support multiple users simultaneously. This paper investigates the impact of receiver orientation on resource allocation in optical wireless systems, using a wavelength division multiple access (WDMA) scheme. Three different systems that have different receiver orientations are examined in this work. Each of these systems considers 8 simultaneous users in two scenarios. WDMA is utilised to support multiple users and is based on four wavelengths offered by Red, Yellow, Green and Blue (RYGB) LDs for each AP. An angle diversity receiver (ADR) is used in each system with different orientations. The optimised resource allocations in terms of wavelengths and access point (AP) is obtained by using a mixed-integer linear programming (MILP) model. The channel bandwidth and SINR are determined in the two scenarios in all systems. The results show that a change in the orientation of the receiver can affect the level of channel bandwidth and SINR. However, SINRs in both scenarios for all users are above the threshold (15.6 dB). The SINR obtained can support data rate of 5.7 Gbps in both scenarios in all systems.

[1]  Jaafar M. H. Elmirghani,et al.  Spot diffusing technique and angle diversity performance for high speed indoor diffuse infra-red wireless transmission , 2004 .

[2]  Jaafar M. H. Elmirghani,et al.  WDM for high-speed indoor visible light communication system , 2017, 2017 19th International Conference on Transparent Optical Networks (ICTON).

[3]  Edward A. Lee,et al.  Simulation of Multipath Impulse Response for Indoor Wireless Optical Channels , 1993, IEEE J. Sel. Areas Commun..

[4]  Fuad E. Alsaadi,et al.  Adaptive mobile optical wireless systems employing a beam clustering method, diversity detection, and relay nodes , 2010, IEEE Transactions on Communications.

[5]  Jaafar M. H. Elmirghani,et al.  Performance Evaluation of 5 Gbit/s and 10 Gbit/s Mobile Optical Wireless Systems Employing Beam Angle and Power Adaptation with Diversity Receivers , 2011, IEEE Journal on Selected Areas in Communications.

[6]  Jaafar M. H. Elmirghani,et al.  20 Gb/s Mobile Indoor Visible Light Communication System Employing Beam Steering and Computer Generated Holograms , 2015, Journal of Lightwave Technology.

[7]  Jaafar M. H. Elmirghani,et al.  Optimum resource allocation in optical wireless systems with energy-efficient fog and cloud architectures , 2020, Philosophical Transactions of the Royal Society A.

[8]  Jaafar M H Elmirghani,et al.  High-Speed Spot Diffusing Mobile Optical Wireless System Employing Beam Angle and Power Adaptation and Imaging Receivers , 2010, Journal of Lightwave Technology.

[9]  Fuad E. Alsaadi,et al.  Adaptive mobile line strip multibeam MC-CDMA optical wireless system employing imaging detection in a real indoor environment , 2009, IEEE Journal on Selected Areas in Communications.

[10]  U. Bapst,et al.  Wireless in-house data communication via diffuse infrared radiation , 1979, Proceedings of the IEEE.

[11]  Fuad E. Alsaadi,et al.  Adaptive mobile spot diffusing angle diversity MC-CDMA optical wireless system in a real indoor environment , 2009, IEEE Transactions on Wireless Communications.

[12]  Muhammad Tahir,et al.  Visible light communication using wavelength division multiplexing for smart spaces , 2012, 2012 IEEE Consumer Communications and Networking Conference (CCNC).

[13]  Jaafar M. H. Elmirghani,et al.  Transmitter Diversity with Beam Steering , 2019, 2019 21st International Conference on Transparent Optical Networks (ICTON).

[14]  Jaafar M. H. Elmirghani,et al.  Visible Light Optical Data Centre Links , 2019, 2019 21st International Conference on Transparent Optical Networks (ICTON).

[15]  Jaafar M. H. Elmirghani,et al.  Performance evaluation of a triangular pyramidal fly-eye diversity detector for optical wireless communications , 2003, IEEE Commun. Mag..

[16]  Jianjun Yu,et al.  Demonstration of 575-Mb/s downlink and 225-Mb/s uplink bi-directional SCM-WDM visible light communication using RGB LED and phosphor-based LED. , 2013, Optics express.

[17]  Jaafar M. H. Elmirghani,et al.  25 Gbps mobile visible light communication system employing fast adaptation techniques , 2016, 2016 18th International Conference on Transparent Optical Networks (ICTON).

[18]  F Alsaadi,et al.  Mobile Multigigabit Indoor Optical Wireless Systems Employing Multibeam Power Adaptation and Imaging Diversity Receivers , 2011, IEEE/OSA Journal of Optical Communications and Networking.

[19]  K. Hinton,et al.  GreenTouch GreenMeter core network energy-efficiency improvement measures and optimization , 2018, IEEE/OSA Journal of Optical Communications and Networking.

[20]  Fuad E. Alsaadi,et al.  Performance evaluation of 2.5 Gbit/s and 5 Gbit/s optical wireless systems employing a two dimensional adaptive beam clustering method and imaging diversity detection , 2009, IEEE Journal on Selected Areas in Communications.

[21]  Jaafar M. H. Elmirghani,et al.  Uplink design in VLC systems with IR sources and beam steering , 2017, IET Commun..

[22]  M. T. Alresheedi,et al.  10 Gb/s Indoor Optical Wireless Systems Employing Beam Delay, Power, and Angle Adaptation Methods With Imaging Detection , 2012, Journal of Lightwave Technology.

[23]  Jaafar M. H. Elmirghani,et al.  Mobile Multi-Gigabit Visible Light Communication System in Realistic Indoor Environment , 2015, Journal of Lightwave Technology.

[24]  Jaafar M. H. Elmirghani,et al.  Hologram selection in realistic indoor optical wireless systems with angle diversity receivers , 2015, IEEE/OSA Journal of Optical Communications and Networking.

[25]  Jaafar M. H. Elmirghani,et al.  Pyramidal fly-eye detection antenna for optical wireless systems , 1999 .

[26]  Jaafar M. H. Elmirghani,et al.  Fast and efficient adaptation techniques for visible light communication systems , 2016, IEEE/OSA Journal of Optical Communications and Networking.

[27]  Fuad E. Alsaadi,et al.  Fast and Efficient Adaptation Algorithms for Multi-Gigabit Wireless Infrared Systems , 2013, Journal of Lightwave Technology.

[28]  Jaafar M. H. Elmirghani,et al.  Co-existence of Micro, Pico and Atto Cells in Optical Wireless Communication , 2019, 2019 IEEE Conference on Standards for Communications and Networking (CSCN).

[29]  Jonathan J. Wierer,et al.  Four-color laser white illuminant demonstrating high color-rendering quality. , 2011, Optics express.

[30]  C. Wei,et al.  3.22-Gb/s WDM visible light communication of a single RGB LED employing carrier-less amplitude and phase modulation , 2013, 2013 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference (OFC/NFOEC).

[31]  Jaafar M. H. Elmirghani,et al.  Infrared Uplink Design for Visible Light Communication (VLC) Systems with Beam Steering , 2019, 2019 IEEE International Conference on Computational Science and Engineering (CSE) and IEEE International Conference on Embedded and Ubiquitous Computing (EUC).

[32]  Jaafar M. H. Elmirghani,et al.  Optimized Resource Allocation in Multi-User WDM VLC Systems , 2019, 2019 21st International Conference on Transparent Optical Networks (ICTON).

[33]  Zabih Ghassemlooy,et al.  Optical Wireless Communications: System and Channel Modelling with MATLAB® , 2012 .

[34]  Jaafar M. H. Elmirghani,et al.  Optical Wireless Cabin Communication System , 2019, 2019 IEEE Conference on Standards for Communications and Networking (CSCN).

[35]  Jaafar M. H. Elmirghani,et al.  10 Gbps mobile visible light communication system employing angle diversity, imaging receivers, and relay nodes , 2015, IEEE/OSA Journal of Optical Communications and Networking.