Robust method and apparatus enabling multi-mode wireless optical communication

Robust method and apparatus enabling multi-mode wireless optical communication

  • CN 1,207,220 A
  • Filed: 01/03/1996
  • Published: 02/03/1999
  • Est. Priority Date: 01/03/1996
  • Status: Abandoned Application
First Claim
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1. between dispatching station and receiving station, realize the method for wireless light communication, it is characterized in that:

  • A) described dispatching station provides a preamble (52), and it comprises all Frames of being made up of the one-period pulse train with definite cycle, and the content of number of time slot (L) and frame is that described receiving station will know in every frame;

    B) described dispatching station transfers out described pulse train with the light signal form;

    C) described receiving station carries out the carrier wave detection according to the described pulse train that receives;

    D) described receiving station determines the cycle of described pulse train, and is synchronous relatively to obtain;

    E) described receiving station is adjusted to its clock on the time slot phase place of the pulse train that receives, and sets the clock of the pulse train of described input by shift register;

    F) described dispatching station transfers out a unique synchronization character (53) of calibrating on the described cycle, and it is that described receiving station will know;

    G) described receiving station asks correlation to the known described unique synchronization character of the described pulse train in the described shift register and receiving station, so that receiving station reaches the absolute synchronization with described dispatching station behind the described synchronization character of identification (53);

    H) present, described dispatching station indicates in the control field (59) of predetermined length and structure, which kind of modulator approach should be used for transferring out the data in data/subsystem field (51), make to support described whole receiving stations of relevant modulator approach all waiting for described data.

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