Adaptive predistortion using over-the-hop feedback

  • US 5,910,965 A
  • Filed: 06/30/1995
  • Issued: 06/08/1999
  • Est. Priority Date: 06/30/1995
  • Status: Expired due to Term
First Claim
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1. An improved method of predistorting a signal before transmission of the signal to compensate for nonlinearities introduced when the signal is transmitted to a receiver, the improvement comprising the steps of:

  • (a) evaluating a received signal at a receiver to determine whether the received signal includes nonlinearities, said evaluation including the step of identifying a nonrandom distribution of data in the received signal, the nonrandom distribution being indicative of a nonlinearity; and

    (b) providing a result of the evaluation back to a transmitter that sent the received signal, the result being used at the transmitter to predistort signals before transmission therefrom.

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