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. 26, 2008
Filed:
Apr. 28, 2003
Takeo Ohseki, Saitama, JP;
Masato Furudate, Saitama, JP;
Yoshio Kunisawa, Saitama, JP;
Hiroyasu Ishikawa, Saitama, JP;
Hideyuki Shinonaga, Saitama, JP;
Takeo Ohseki, Saitama, JP;
Masato Furudate, Saitama, JP;
Yoshio Kunisawa, Saitama, JP;
Hiroyasu Ishikawa, Saitama, JP;
Hideyuki Shinonaga, Saitama, JP;
KDDI Corporation, Tokyo, JP;
Abstract
A frequency error correction device for an OFDM receiver is proposed. The receiver receives an OFDM signal with a preamble section and a payload section including pilot carriers. The frequency error correction device includes a first frequency correction unit for correcting a relative phase error in a predetermined period of time based upon a frequency error in the preamble section of the OFDM signal in time domain, and a second frequency correction unit for correcting a remaining phase error in every predetermined period of time based upon the pilot carriers of the OFDM signal in frequency domain.