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System and method for generating signal waveforms in a CDMA cellular telephone system

  • US 5,103,459 A
  • Filed: 06/25/1990
  • Issued: 04/07/1992
  • Est. Priority Date: 06/25/1990
  • Status: Expired due to Term
First Claim
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1. A system for modulating an information signal in a spread spectrum communication system, comprising:

  • means for generating an orthogonal function signal representative of an orthogonal function selected from a plurality of orthogonal functions;

    means for generating a pseudorandom noise (PN) signal of a predetermined PN code;

    means for combining said orthogonal function signal, said PN signal and an information signal, and for providing a resultant first modulation signal.

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