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Spread spectrum communication system particularly-suited for RF network communication

  • US 5,359,625 A
  • Filed: 10/04/1993
  • Issued: 10/25/1994
  • Est. Priority Date: 08/23/1989
  • Status: Expired due to Term
First Claim
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1. A method of transmitting data on a communication channel, comprising the steps of:

  • receiving a stream of digital signals for transmission on said communication channel, said digital signals having at least two possible values;

    generating at least two different direct sequences each containing a plurality of chips, said chips being selected to approximate a swept frequency waveform in which successive square waves are formed by said chips, in which the durations of the square waves extend over a plurality of said chips, and in which the frequency of said square waves varies across at least a portion of said sequence;

    encoding said digital signals by using different ones of said direct sequences to represent different values of said digital signals;

    using said direct sequences to generate a direct sequence spread spectrum signal; and

    transmitting said spread spectrum signal across said channel.

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