Visible ray communication system, transmission apparatus, and signal transmission method

Visible ray communication system, transmission apparatus, and signal transmission method

  • CN 102,224,691 A
  • Filed: 11/24/2009
  • Published: 10/19/2011
  • Est. Priority Date: 11/25/2008
  • Status: Active Grant
First Claim
Patent Images

1. visible light communication system that comprises dispensing device and receiving system,Wherein, described dispensing device comprises:

  • A plurality of luminaires;

    String (S/P) transducer also is used for going here and there and changing sending data, thereby produces N data flow;

    Modulator is used for the dimension of predetermined number being modulated for N the data stream that each carrier wave produces by the S/P transducer, thus N modulation signal of generation;

    The carrier signal multiplier, N the modulation signal that is used for being produced by modulator multiply by N carrier signal with described N modulation signal quadrature respectively, sends signal thereby produce N;

    AndLuminous controling unit is used for sending signal according to N that is produced by the carrier signal multiplier and makes described a plurality of luminaire luminous, andDescribed receiving system comprises;

    Optical receiving device, be used for receiving send from a plurality of luminaires of described dispensing device and at transmission line by the light of spatial reuse, thereby according to corresponding receiving intensity output received signal;

    The FFT unit is used for by N carrier signal of use the received signal of exporting from optical receiving device being carried out FFT, thereby extracts N modulation signal of each carrier wave;

    AndDemodulator, each that is used for the modulation signal that extracts from the FFT unit is carried out demodulation.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×