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Resource Allocation in 6G Optical Wireless Systems

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Document pages: 15 pages

Abstract: The abundant optical spectrum is a promising part of the electromagneticspectrum for 6G communication systems. The visible light spectrum which is apart of the optical spectrum, can be used to provide communication andillumination simultaneously. Visible light communication (VLC) systems havebeen widely researched, however, little work has focused on the area ofmultiple access. This chapter studies wavelength division multiple access(WDMA) techniques in VLC systems to support multiple users. In addition, theoptimization of resource allocation is considered in this chapter by developinga mixed-integer linear programming (MILP) model that can be used to maximizethe signal to noise and interference ratio (SINR) while supporting multipleusers. The optimized resource allocation results in the best assignment ofaccess points (APs) and wavelengths to users. Different indoor environmentssuch as office, data center and aircraft cabins are evaluated in this chapter.A laser diode (LD) with four wavelengths (red, green, yellow and blue) is usedto provide high bandwidth for communication and white light for illumination.Also, an angle diversity receiver (ADR) is utilized to receive signals andreduce noise and interference by exploiting the spatial domain.

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