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System employing dissipative pseudorandom dynamics for communications and measurement

  • US 5,612,973 A
  • Filed: 06/19/1995
  • Issued: 03/18/1997
  • Est. Priority Date: 06/19/1995
  • Status: Expired due to Term
First Claim
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1. A communication or measurement system including:

  • A. a transmitter for transmitting a modulated signal, the transmitter including a first feedback shift register that produces a pseudo-random noise signal that is used to modulate a message signal;

    B. a receiver for receiving the modulated message signal, the receiver including a second feedback shift register for reproducing the pseudo-random noise signal from the received modulated signal and using the noise signal to recover the message signal from the received signal, the second feedback shift register being characterized by a non-chaotic expression that is associated with the expression that governs the first feedback shift register and has stable fixed points at integer values and unstable fixed points at 1/2 integer values.

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