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. 20, 2001
Filed:
Dec. 10, 1998
Hideki Yukitomo, Yokohama, JP;
Kazuyuki Miya, Kawasaki, JP;
Katsuhiko Hiramatsu, Yokosuka, JP;
Keiji Takakusaki, Yokohama, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
Received signal provided via plural antennas,are memorized in memory,. First weight controller,calculates the first weights by which the received signals are weighted, and second weight controller,calculates the second weights using the received signals. Multipliers,and,multiply the memorized received signals by the first weights, while multiply the memorized received signals by the second weights when a channel quality of radio signals deteriorates due to a change of the radio signal's direction of arrival Adder,synthesizes the multiplication results. Propagation path distortion compensator,estimates a deterioration of the channel quality using synthesis result to compensate. Detector,detects the compensation result that is used as a parameter to calculate the first and second weights, which allows the apparatus to receive radio signals without deteriorating reception qualities when the channel quality deteriorates rapidly due to the change of the radio signal's direction of arrival.