×

Effective adaptive filtering techniques

  • US 7,826,523 B2
  • Filed: 03/31/2006
  • Issued: 11/02/2010
  • Est. Priority Date: 03/31/2006
  • Status: Expired due to Fees
First Claim
Patent Images

1. An apparatus, comprising:

  • a noise calculation module to determine a noise level of an input signal;

    a boundary setting module to store multiple boundary intervals, wherein each boundary interval corresponds to a particular noise level and to set a reduced constellation boundary interval based on the noise level; and

    an equalizer to perform adaptive equalization on the input signal in accordance with the reduced constellation boundary interval wherein the equalizer comprises a slicer to generate a hard symbol associated with the input signal; and

    wherein the boundary setting module is to set the reduced constellation boundary interval such that at least one of a probability ratio or a probability difference is greater than a respective predetermined threshold;

    wherein the probability ratio is a ratio of a probability of the one or more hard symbols being correct to a probability of the one or more hard symbols being incorrect; and

    wherein the probability difference is a difference between a probability of the hard symbol being correct and a probability of the hard symbol being incorrect is greater than a predetermined threshold.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×