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Matched filter for scalable spread spectrum communications systems

  • US 7,539,235 B2
  • Filed: 09/04/2007
  • Issued: 05/26/2009
  • Est. Priority Date: 09/24/2003
  • Status: Expired due to Fees
First Claim
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1. A transmitter for a spread spectrum communications system, comprising:

  • a data source;

    a first multiplier/mixer spreading data from said data source with a first pseudo noise source;

    a second multiplier/mixer spreading data from said first mixer with a second pseudo noise source, wherein the first pseudo noise source and the second pseudo noise source are not used to lock a receiver to the transmitter; and

    an RF transmitter.

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