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Method and apparatus for layered modulation

  • US 20060050805A1
  • Filed: 07/03/2003
  • Published: 03/09/2006
  • Est. Priority Date: 07/03/2002
  • Status: Active Grant
First Claim
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1. A method for simulating a layer modulated signal comprising the steps of:

  • providing an upper layer signal comprising a first modulated bit stream;

    providing a lower layer signal comprising a second modulated bit stream;

    attenuating the lower layer signal; and

    combining the upper layer signal and the attenuated lower layer signal to produce the composite layer modulated signal;

    wherein at least one directional coupler is used to tap the composite layer modulated signal.

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