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Title:
QUARTER-RATE SPECULATIVE DECISION FEEDBACK EQUALIZER
Document Type and Number:
Japanese Patent JP2014023160
Kind Code:
A
Abstract:

To realize a system in which a timing constraint associated with performing inter-symbol interference reduction is relaxed.

A system for relaxing a timing constraint associated with reducing inter-symbol interference (ISI) of input data comprises: a speculative analog circuit configured to receive input data at a first clock rate, add an inter-symbol interference (ISI) cancellation value to the input data to generate first speculative data, and subtract the inter-symbol interference cancellation value from the input data to generate second speculative data; and a sampling circuit communicatively coupled to the speculative analog circuit and configured to sample the first speculative data and the second speculative data at a second clock rate that is one-fourth of the first clock rate such that a timing constraint associated with performing the inter-symbol interference reduction is relaxed.


Inventors:
PARIKH SAMIR
Application Number:
JP2013149416A
Publication Date:
February 03, 2014
Filing Date:
July 18, 2013
Export Citation:
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Assignee:
FUJITSU LTD
International Classes:
H04B3/06; H03H17/00; H04L25/03
Domestic Patent References:
JP2011244284A2011-12-01
Foreign References:
US20080187036A12008-08-07
US20090252215A12009-10-08
US20110096825A12011-04-28
Attorney, Agent or Firm:
Atsushi Aoki
Koichi Itsubo
Higuchi Souji