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Block-Based Crest Factor Reduction

  • US 20140044215A1
  • Filed: 08/07/2012
  • Published: 02/13/2014
  • Est. Priority Date: 08/07/2012
  • Status: Active Grant
First Claim
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1. An apparatus for generating a multicarrier communication signal having a reduced crest factor, comprising:

  • a sampling block unit for storing a block of input samples from a multicarrier communication signal; and

    a crest factor reduction unit coupled to the sampling block memory for performing block-based processing to detect one or more signal peaks in the block of input samples stored in the sampling block memory which exceed a specified power threshold, and to cancel at least a first selected signal peak selected from the one or more signal peaks by applying a first cancellation pulse to the block of input samples stored in the sampling block memory which is phase-aligned with the selected signal peak.

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