Title:
DECISION FEEDBACK EQUALIZER METHOD
Document Type and Number:
Japanese Patent JP2006109501
Kind Code:
A
Abstract:
To learn and compensate for line defects.
The equalizer forms an equalized received value X'(n) based on a combination of a compensated received value X(n) and a stored value D(n) corresponding to (k) prior output values Y(n-1), ..., Y(n-k) from a memory device 140. The equalizer then determines an output value Y(n) based on comparing X'(n) with a positive threshold V1 and a negative threshold V2. When Y(n) is determined to be zero, the equalizer adjusts the stored correction value D(n) by a predetermined value Δ based on whether X'(n) is positive or negative.
Inventors:
BLACKWELL STEVEN R
GOODSON RICHARD L
GOODSON RICHARD L
Application Number:
JP2005311695A
Publication Date:
April 20, 2006
Filing Date:
October 26, 2005
Export Citation:
Assignee:
UNIVERSAL DATA SYSTEMS INC
International Classes:
H03H21/00; H04B3/06; H04B3/04; H04L25/03; H04L25/06
Attorney, Agent or Firm:
Kazuo Shamoto
Tadashi Masui
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Hideo Tanaka
Tadashi Masui
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Hideo Tanaka