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:
Nov. 20, 2007
Filed:
Jul. 03, 2002
Noriyoshi Suzuki, Aichi, JP;
Noriyoshi Suzuki, Aichi, JP;
Kabushiki Kaisha Toyota Chuo Kenkyusho, Aichi-gun, JP;
Abstract
A method and apparatus for receiving a modulated signal which consists of N subcarriers containing N-L (L<N) nullcarriers and in which an effective symbol has a length T, and a frequency interval between two adjacent subcarriers of the N subcarriers is/T. The method includes estimating an excess delay of a delayed wave, and deciding a part of the symbol regarded as a to-be-used symbol, based on the estimated excess delay, where a length of the decided part is TM/N (M<N) within the effective symbol length T which is decided so as not to contain a part of the symbol suffering from a waveform distortion caused by the delayed wave; and decomposing a complex digital signal which is quadrature-detected at sampling intervals T/N into L subcarriers by use of M samples of the signal within the to-be-used symbol part by means of a matched filter.