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High-data-rate supplemental channel for CDMA telecommunications system

  • US 6,173,007 B1
  • Filed: 01/15/1997
  • Issued: 01/09/2001
  • Est. Priority Date: 01/15/1997
  • Status: Expired due to Term
First Claim
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1. A method for operating a multichannel communication system using direct sequence spread spectrum signal processing comprising:

  • generating a complex data source having a multichannel term and a high-rate term;

    generating a set of medium rate channels in response to a set of medium rate data sources and a set of long channel codes;

    generating said multichannel term by summing said set of medium rate channels;

    generating a high-rate channel in response to a high-rate data source and a short channel code;

    generating a complex spreading code having an in-phase term and quadrature-phase term;

    complex multiplying said complex data source and said complex spreading code yielding a real term and an imaginary term;

    modulating said real term with an in-phase carrier; and

    modulating said imaginary term with a quadrature-phase carrier.

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