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:
Aug. 22, 2006
Filed:
Oct. 19, 2001
Yasuhide Okuhata, Yokohama, JP;
Yasuhide Okuhata, Yokohama, JP;
Kabushiki Kaisha Kenwood, Tokyo, JP;
Abstract
A technique for stably receiving an orthogonal frequency division multiplexed signal by means of a simple structure. Delay circuits 9–11 add delay times to the signals simultaneously received by antennas 1–4 in such a way that the delay time difference between any two signals is the reciprocal or more of the bandwidth allocated to one subcarrier of orthogonal frequency division multiplex. Thus, the signal synthesized by a mixer 12 can be assumed to be substantially equivalent to the received signal in a multipath environment. Since the delay time differences among the signals simultaneously received by the antennas 1–4 are sufficiently shorter than the length of the guard interval section, the margin prepared for actual arrival of a delay wave because of multipath is sufficiently ensured.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile