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:
Jun. 13, 2017
Filed:
Jul. 06, 2016
Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;
Daisuke Sasaki, Yokohama, JP;
Kazuhiko Hatae, Kawasaki, JP;
Tomoki Katou, Kawasaki, JP;
Nobukazu Koizumi, Kawasaki, JP;
Masato Oota, Atsugi, JP;
Yasuo Ohtomo, Yokohama, JP;
Manabu Yamazaki, Fuchu, JP;
Masashi Sato, Kawasaki, JP;
FUJITSU LIMITED, Kawasaki, JP;
Abstract
A circuit includes a calculation circuit configured to calculate a noise power of a predetermined-training-sequence pattern repeatedly included in a first signal input into an adaptive equalizer, based on a second signal obtained by compensating the first signal by a compensation circuit, a channel-estimation value based on the second signal, and the predetermined-training-sequence pattern; and an average circuit configured to obtain an average value of estimation values of frequency offsets based on the predetermined-training-sequence pattern having the noise power equal to or smaller than a predetermined power, among estimation values of frequency offsets based on the predetermined-training-sequence pattern, wherein the compensation circuit is configured to compensate a frequency offset of the predetermined-training sequence pattern based on the average value and thereby obtain the second signal, and the adaptive equalizer is configured to perform adaptive-equalization processing of the first signal with a setting value based on the second signal.