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, 2017
Filed:
Nov. 29, 2013
Panasonic Corporation, Osaka, JP;
Shigeru Soga, Kanagawa, JP;
Teruaki Hasegawa, Osaka, JP;
Ippei Kanno, Kyoto, JP;
Yoshinobu Matsumura, Osaka, JP;
Hisateru Kobatake, Osaka, JP;
Kouya Watanabe, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
An OFDM receiver apparatus () receives a signal that includes an STF having a plurality of pilot subcarriers and a plurality of null subcarriers that are alternately arranged at predetermined frequency intervals in a transmission band and that includes a data part that is time-multiplexed with the STF. A null carrier extraction unit () extracts a plurality of null subcarrier frequency signals from the received signal. A power calculation unit () detects, based on the levels of the extracted signals, the interference levels of the plurality of subcarriers in the transmission band. A soft decision unit () uses the reliability of the plurality of subcarriers, which is calculated based on the detected interference levels, to perform a soft decision of a demodulated signal of the received data part. An error correction unit () performs, based on the result of the soft decision, an error correction, thereby reconstructing the data.