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System and method for reducing peak-to-average power ratio for multi-carrier communication systems

  • US 8,135,081 B2
  • Filed: 10/15/2010
  • Issued: 03/13/2012
  • Est. Priority Date: 10/23/2003
  • Status: Active Grant
First Claim
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1. In a multi-carrier communication system, a system for transmitting data with multiple carriers, comprising:

  • a processor for sequencing the data according to one or more unique sequences;

    a modulator for modulating one or more of the unique sequences of data to create a modulated signal;

    circuitry for selecting one of the modulated sequences of data based on a comparison of a peak-to-average power ratio (PAPR) of that sequence to a first threshold value;

    circuitry for appending a data map signal associated with the selected sequence to create an appended signal;

    a filter for filtering said appended signal to remove amplitude peaks outside a second threshold band to thereby create a filtered signal; and

    a transmitter for transmitting the filtered signal over the multi carrier communication system.

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