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Adaptive modulation transmission system, transmission device, reception device, and method thereof

  • US 20060209937A1
  • Filed: 03/04/2004
  • Published: 09/21/2006
  • Est. Priority Date: 03/05/2003
  • Status: Abandoned Application
First Claim
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1. An adaptive modulation transmission system comprising a transmission device and a reception device, wherein the adaptive modulation transmission system is adapted to change a modulation parameter according to a propagation path quality between the transmission device and the reception device and to change a code multiplicity according to an amount of a data to be transmitted from the transmission device to the reception device, wherein the transmission device comprises:

  • a signal modulation unit configured to modulate the data according to the modulation parameter;

    a code multiplexing unit configured to perform code multiplexing according to the code multiplicity;

    a code multiplexing controller configured to select the code multiplicity according to a predetermined value of the amount of the data to be transmitted; and

    an adaptive modulation controller configured to set a threshold of the propagation path quality for defining a region of the propagation path quality to which a combination of the modulation parameter and the code multiplicity is applicable, compare the threshold with the propagation path quality, select the combination of the modulation parameter and the code multiplicity based on a result of the comparison, and output the selected modulation parameter to the signal modulation unit.

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