Optimal imaging receiver design for high-speed mobile optical wireless communications

Mohammad Dehghani Soltani, Hossein Kazemi, Elham Sarbazi, Harald Haas, Majid Safari

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

4 Citations (Scopus)
23 Downloads (Pure)

Abstract

The optical receivers suitable for the next generation of optical wireless networks need to be ultra-high-speed while having a wide field of view (FOV) to accommodate user mobility. The design of such receivers is challenging due to two known trade-offs, namely, the area-bandwidth and the gain-FOV. In this study, we consider these trade-offs and formulate an optimisation problem to design imaging receivers that can achieve maximum high speed while satisfying a minimum FOV requirement. The design will be based on an array of arrays of photodetectors for which we present analytical derivations of signal-to-noise ratio (SNR) assuming maximum ratio combining (MRC). Practical considerations and non-idealities have been considered in our design and the reliability of the analytical model is verified by Optic Studio-based simulations. The optimization problem is solved assuming on-off keying (OOK) modulation. The results show a trade-off between achievable data rate and FOV. For example, it is demonstrated that a data rate of ~23 Gbps is achievable with a receiver of at most 2 cm x 2 cm dimensions with a FOV of 15°. However, a receiver with the same dimensions may only achieve ~8 Gbps if the FOV requirement increases to 20°.
Original languageEnglish
Title of host publication2022 IEEE International Conference on Communications Workshops, ICC Workshops 2022
Place of PublicationPiscataway, NJ
PublisherIEEE
Pages439-444
Number of pages6
ISBN (Electronic)9781665426718
DOIs
Publication statusPublished - 11 Jul 2022

Keywords

  • high-speed optical imaging receiver
  • array of photodetectors
  • optical wireless communications (OWCs)
  • wide field-of-view (FOV)

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