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DECISION FEEDBACK EQUALIZER, RECEIVING CIRCUIT, AND DECISION FEEDBACK EQUALIZATION PROCESSING METHOD

  • US 20120033726A1
  • Filed: 07/08/2011
  • Published: 02/09/2012
  • Est. Priority Date: 08/04/2010
  • Status: Active Grant
First Claim
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1. A decision feedback equalizer comprising:

  • L equalization calculation circuits to perform an equalization calculation of a first sample of input data for each of M combinations of data decision values of a second sample sampled from the input data before sampling the first sample;

    a first logic circuit to generate first M logical values by selecting and arranging calculation values of M calculation values calculated by at least one equalization calculation circuit among the L equalization calculation circuits based on a data decision value for a third sample sampled before sampling the first sample; and

    a selection circuit to select one of the first M logical values based on a data decision value for a fourth sample sampled before sampling the third sample, and to output the selected logical value as a data decision value of the first sample.

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