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Adaptive predistortion for a transmit system

  • US 7,068,101 B2
  • Filed: 07/03/2003
  • Issued: 06/27/2006
  • Est. Priority Date: 07/03/2003
  • Status: Active Grant
First Claim
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1. A system for processing an input signal, the system comprising:

  • an adaptive predistortion subsystem for receiving said input signal and for producing a predistorted signal by applying a deliberate predistortion to said input signal, wherein said deliberate predistortion includes magnitude distortions which adjust a magnitude of said input signal; and

    a signal processing subsystem receiving and processing said predistorted signal and producing a system output signal, whereinsaid adaptive predistortion subsystem distorts said Input signal to compensate for distortions in said system output signal;

    said signal processing subsystem decomposes said predistorted signal into separate components, each of said separate components being processed separately;

    said processing subsystem combines said components after processing to produce said system output signal; and

    said deliberate predistortion applied to said input signal by said adaptive predistortion subsystem to produce said predistorted signal is adjusted based on said system output signal.

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