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Signal pre-processor for an amplifying system

  • US 20100172437A1
  • Filed: 04/24/2009
  • Published: 07/08/2010
  • Est. Priority Date: 01/05/2009
  • Status: Abandoned Application
First Claim
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1. A signal pre-processor for an amplifying system, for use in providing a multiplexed, multi-carrier signal to an amplifier to give an amplified signal comprising a wanted frequency range, the pre-processor comprising:

  • a) a sample rate setting arrangement for providing a digital, multiplexed signal as an over-sampled signal in complex form, the signal being over-sampled with respect to the wanted frequency range;

    b) an amplitude processor for receiving the over-sampled signal and processing it to obtain a set of amplitude values;

    c) an amplitude value converter for converting at least some of the amplitude values to complex correction values; and

    d) a signal correcting processor for applying the complex correction values to the over-sampled signal to create a pre-distorted digital signal, prior to amplification by the amplifier,such that signal distortion in the amplified signal can be at least partially avoided.

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