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:
Apr. 18, 2006
Filed:
Oct. 29, 2001
Kazuhito Ichihara, Kawasaki, JP;
Takao Sugawara, Kawasaki, JP;
Yuichi Sato, Kawasaki, JP;
Toshihiko Morita, Kawasaki, JP;
Motomu Takatsu, Kawasaki, JP;
Kazuhito Ichihara, Kawasaki, JP;
Takao Sugawara, Kawasaki, JP;
Yuichi Sato, Kawasaki, JP;
Toshihiko Morita, Kawasaki, JP;
Motomu Takatsu, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
In a Maximum A posteriori Probability decoding (MAP decoding), a correlation and a deviation of noises for past and future states which depend on input signal patterns in past N bits and future Q bits are calculated by training by a noise correlation arithmetic operating unitand they are stored. Upon reproduction, in a white noise arithmetic operating unit, white noise values for the past and future states in which colored noises are converted into white noises are obtained by using the stored correlation and deviation of the noises. In an input signal arithmetic operating unit, an input signal (channel information) Λc(y|S) of the MAP decoding is calculated from the white noise values and the deviation for the past and future states. A likelihood in the MAP decoding is obtained from the input signal.