The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 12, 2008
Filed:
Aug. 15, 2003
Michael Philip Fitton, Bristol, GB;
Siew Chung Leong, Bristol, GB;
Douglas John Gargin, Bristol, GB;
Rafael Arcangel Cepeda Lopez, Bristol, GB;
Michael Philip Fitton, Bristol, GB;
Siew Chung Leong, Bristol, GB;
Douglas John Gargin, Bristol, GB;
Rafael Arcangel Cepeda Lopez, Bristol, GB;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
An equalizer for a digital communications system includes a first buffer to store received data prior to equalisation; a second buffer to store error-checked received data; a channel estimator coupled to the first and second buffers to determine a channel estimate using the received data from the first buffer and the error-checked data from the second buffer; and a control unit coupled to the channel estimator to update a channel estimate for use by the equalizer in equalizing the received data. The control unit performs the updating conditional upon a difference between the channel estimate and a previous channel estimate used for equalizing the received data. A look-up table is coupled to the control unit and a calculating device is coupled to the look-up table to calculate and store, in the look-up table, data obtained by applying the channel estimate to a sequence of symbols.