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:
Oct. 16, 2001
Filed:
Jul. 28, 1995
Shigeru Ono, Minato-ku, JP;
Hiroshi Hayashi, Minato-ku, JP;
Tomoko Tanaka, Minato-ku, JP;
Noriaki Kondoh, Minato-ku, JP;
Oki Electric Industry Co., Ltd., Tokyo, JP;
Abstract
A metric calculating means calculates a first metric corresponding to a transmitted symbol sequence estimated by an adaptive equalizer, then calculates a second metric corresponding to a symbol sequence in which a symbol located at a position where a soft decision is made in the transmitted symbol sequence is inverted in polarity. Thereafter a subtracting portion subtracts the second metric from the first metric. Further, a multiplying portion multiplies the subtraction result from the subtracting portion by the symbol located at a position where the soft decision is made in the transmitted symbol sequence to generate a soft decision.