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Non-orthogonal multiple-access-based visible light communications for smart city applications

Non-orthogonal multiple-access-based visible light communications for smart city applications

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In this chapter, we provide an overview of non-orthogonal multiple access (NOMA)based visible light communication (VLC) techniques to ensure high data rates, reliable seamless connectivity and improved capacity for a connected smart city. Smart cities utilize information and communication technology (ICT) to monitor, analyze and manage the assets and resources as efficient as possible. With the advent of the Internet of Things (IoT) as an integral part of smart cities, the communication system of the smart city must provide improved quality of service (QoS) with high data rates. VLC is a promising technology to enhance the communication system of a smart city which enables high-speed data transmission simultaneously with illumination. The ability of integrating VLC in device-to-device (D2D) communication, motion detection and localization made it suit for indoor communication in the context of industrial 4.0. Also, VLC can be utilized in vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) communications that are the key enabling technological components of intelligent transportation system (ITS). To provide a reliable multiple network access technique for the proposed VLC system, NOMA can be used. In addition to the spectral efficiency gain of NOMA, the research indicated that NOMA can effectively support massive connectivity which is paramount in smart city communication systems.

Chapter Contents:

  • List of abbreviations
  • 5.1 Introduction
  • 5.1.1 Visible light communication
  • 5.1.2 Non-orthogonal multiple access
  • 3GPP standard for NOMA and smart city applications
  • NOMA-VLC for smart city applications
  • Future research directions forVLC in smart cities
  • 5.2 A NOMA-VLC communication system for smart buildings: a use case
  • 5.2.1 System model
  • Channel models
  • 5.2.2 Achievable rates of the system
  • NOMA-RF communication: BS to relay
  • NOMA-VLC communication: relays to users
  • 5.2.3 Performance trade-off of the system
  • 5.2.4 Energy efficiency of the system
  • 5.3 Conclusion
  • References

Inspec keywords: telecommunication network management; resource allocation; Internet of Things; smart cities; telecommunication network reliability; free-space optical communication; nonorthogonal multiple access; indoor radio; mobile radio

Other keywords: ITS; NOMA based VLC techniques; intelligent transportation system; vehicle-to-vehicle communications; ICT; reliable multiple network access technique; V2I communications; motion detection; NOMA spectral efficiency; quality of service; nonorthogonal multiple-access-based visible light communications; reliable seamless connectivity; device-to-device communication; IoT; indoor communication; V2V communications; QoS; Internet of Things; smart city application; vehicle-to-infrastructure communications; Industrial 4.0; information and communication technology

Subjects: Reliability; Multiple access communication; Free-space optical links; Network management; Mobile radio systems

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