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Method and apparatus for transmitting information converted to spread spectrum signal

  • US 5,748,669 A
  • Filed: 04/10/1996
  • Issued: 05/05/1998
  • Est. Priority Date: 04/27/1995
  • Status: Expired due to Fees
First Claim
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1. A method of transmitting information converted to a spread spectrum signal, said information being coded to form an information signal represented by a sequence of bits before being converted to said spread spectrum signal, comprising the steps of:

  • (a) generating a spreading modulation code;

    (b) producing said spread spectrum signal on the basis of said information signal and said spreading modulation code;

    (c) having said spread spectrum signal provided with a signal propagation character and transmitting said spread spectrum signal;

    (d) varying the signal propagation character of said spread spectrum signal while said spread spectrum signal is transmitted; and

    (e) repeating said step (d) at least one time during the duration of each bit of said information signal.

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