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Broadband CDMA overlay system and method

  • US 20010033562A1
  • Filed: 06/11/2001
  • Published: 10/25/2001
  • Est. Priority Date: 12/05/1990
  • Status: Active Grant
First Claim
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1. A method for non-interferingly transmitting spread spectrum signals in a wireless communication system, the wireless system having spread spectrum and narrow band uses, the method comprising:

  • from a selected base station, producing a spread spectrum signal for transmission in a selected sector of the base station;

    notch filtering the produced spread spectrum signal at frequencies used by narrow band users located in the selected sector and sectors of base stations other than the selected base station being adjacent to the selected sector; and

    transmitting the notch filtered signal in the selected sector.

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